Zeolites and Related Materials: Trends Targets and Challenges(SET) (eBook)
1442 Seiten
Elsevier Science (Verlag)
978-0-08-095161-4 (ISBN)
The understanding and development of the unique properties of porous materials relies on a unique blend of multidisciplinary knowledge covering material science, with the implication of organic and colloid chemistry, to prepare micro- and mesoporous materials, surface and adsorption sciences sustained by theory and modelling to understand the peculiar behaviour of molecules in confined systems, special branches of catalysis, physics, chemical engineering and life science to design novel applications.
* This book summarizes the developments in the area of nanoporous solids at the dawn of the 21st century, useful for both students/young researchers entering the field of nanoporous materials, as well as for senior scientists
* Also summarizes the new family of porous compounds, e.g. MOF's and ordered porous carbon
* The present state-of-the-art and prospects of nanoporous solids for advanced applications is discussed
The present book "e;Zeolites and Related Materials: Trends, Targets and Challenges"e; reports the communications that have been presented at the 4th International FEZA (Federation of European Zeolite Associations) Conference in Paris, September 3-6, 2008. It gives an excellent overview of the present state of the art of ordered nanoporous solids including zeolites as well as synthetic layered materials (clays), nanosized molecular sieves, ordered mesoporous solids, metal-organic-framework compounds (MOFs), carbons, etc. with emphasis on the synthesis, comprehensive characterization and advanced applications. The significant research activities in this domain are due to the outstanding properties of those nanoporous materials that concentrate the collaborative efforts of researchers from material science, chemistry, physical chemistry and physics.The understanding and development of the unique properties of porous materials relies on a unique blend of multidisciplinary knowledge covering material science, with the implication of organic and colloid chemistry, to prepare micro- and mesoporous materials; surface and adsorption sciences sustained by theory and modelling to understand the peculiar behaviour of molecules in confined systems; special branches of catalysis, physics, chemical engineering and life science to design novel applications. - This book summarizes the developments in the area of nanoporous solids at the dawn of the 21st century, useful for both students/young researchers entering the field of nanoporous materials, as well as for senior scientists- Also summarizes the new family of porous compounds, e.g. MOF's and ordered porous carbon- The present state-of-the-art and prospects of nanoporous solids for advanced applications is discussed
Cover 1
Copyright Page 5
Preface 6
TOC$Table of Contents 10
Section 1 Plenary lectures 36
CH$Chapter 1 Solving complex zeolite structures – how far can we go? 38
Abstract 38
1. Introduction 38
2. The Focus algorithm 39
3. Powder charge flipping 40
4. Electron microscopy 41
5. Structure envelopes 42
6. Combining powder diffraction and electron microscopy 42
7. TNU-9 43
8. IM-5 43
9. SSZ-74 45
10. Conclusions 45
References 46
CH$Chapter 2 Novel insights into mesoporous ordered delivery systems for biotechnological applications 48
Abstract 48
1. Introduction 48
2. Influence of textural properties on molecule adsorption and controlled delivery 49
3. Conclusions 54
Acknowledgments 55
References 55
CH$Chapter 3 An eye on the inside of zeolite crystals in the act: Studying Brønsted acidity with in-situ micro-spectroscopy 56
Abstract 56
1. Introduction 56
2. Results and Discussion 57
3. Conclusions 65
Acknowledgements 65
References 66
CH$Chapter 4 Concepts in the ionothermal synthesis of zeolites and metal organic frameworks 68
Abstract 68
1. Introduction 68
2. Ionic liquids and ionothermal synthesis 69
3. Ambient pressure synthesis 70
4. Water deactivation 71
5. Anion Control 73
6. Chiral Induction 75
7. Conclusion 76
Acknowledgements 76
References 77
CH$Chapter 5 Hydrocarbon conversion with zeolites – a clair-obscur 78
1. Introduction 78
2. A clair-obscur - Simple reactions on the acid site - Activity 78
3. Spectroscopic monitoring of H/D exchange – a proxy for catalysis 80
4. Enhanced cracking activity in steamed zeolites – still somewhat obscure 81
5. Amorphous silica-aluminas – even somewhat less clear 83
Acknowledgement 84
References 84
Section 2 Invited lectures 88
CH$Chapter 6 Periodic mesoporous organosilicas (PMOs): a new class of materials is coming of age 90
1. Introduction 90
2. Synthesis of PMOs via the ionic surfactant route 91
3. Synthesis of PMOs via the non-ionic surfactant route 92
4. PMOs composed of tris- and multi-silylated Precursors – designing new classes of PMOs 92
5. Morphologies and Applications 93
6. Conclusion 94
References 94
CH$Chapter 7 Molecular sieve catalysts for metathesis reactions 96
Abstract 96
1. Introduction 96
2. Metathesis over zeolite catalysts 97
3. Transition Metal Oxides over Mesoporous Molecular Sieves 97
4. Immobilized Organometallic Catalysts for Metathesis 100
5. Conclusions and Outlook 100
Acknowledgement 101
References 101
CH$Chapter 8 Acidic functional groups incorporated in ordered mesoporous materials: a comparison among different host matrices 102
Abstract 102
1. Introduction 102
2. Experimental 103
3. Results and Discussion 104
4. Conclusion 107
Acknowledgements 107
References 107
CH$Chapter 9 Manganese-modified porous silicates 108
Abstract 108
1. Introduction 108
2. Experimental 108
2. Results and discussion 109
3. Conclusion 112
Acknowledgement 112
References 112
CH$Chapter 10 Engineering optical centres in microporous silicates and MOFs 114
Abstract 114
1. Introduction 114
2. Tunning the Band Gap of Titanosilicates 114
3. Photoluminescent Lanthanides Silicates 115
4. Optical Detection of Chiral Structures 116
5. Microporous Framework Ln-Etidronic Acid MOFs 118
6. Microporous Magnetic MOF With Anisotropic PL Properties 118
References 119
CH$Chapter 11 Cooperative structure directing effects in the synthesis of crystalline molecular sieves 120
Abstract 120
1. Introduction 120
2. Cooperative effects in Fluorine-containing Structure Directing Agents 121
3. Use of a combination of bulky and small SDA 123
Acknowledgments 125
References 125
CH$Chapter 12 Synthesis strategies for the preparation of mixed micro-mesoporous materials 126
Abstract 126
1. Introduction 126
2. Synthesis strategies 126
3. Conclusion 130
Acknowledgement 130
References 130
CH$Chapter 13 Search for innovative syntheses and characterization methods of micro/mesoporous composite materials 132
Abstract 132
1. Introduction 132
2. Results and discussion 132
3. Conclusion 136
Acknowledgments 136
References 137
CH$Chapter 14 On the mechanism of formation of SBA-1 and SBA-3 as studied by in situ synchrotron XRD 138
Abstract 138
1. Introduction 138
2. Experimental 139
3. Results and Discussion 139
4. Summary 142
References 143
Section 3 A – Synthesis and modification of microporous and mesoporous materials 144
CH$Chapter 15 A study on zeolite synthesis from diquaternary ammonium compounds the effect of changing end-group heterocycles in the HF/SiO2 synthesis of
Abstract 146
1. Introduction 146
2. Experimental section 147
3. Results and discussion 149
4. Conclusion 151
References 151
CH$Chapter 16 Synthesis and characterization of mesoporous ZSM-5 core-shell particles for improved catalytic properties 152
Abstract 152
1. Introduction 152
2. Experimental 153
3. Results and Discussion 154
4. Conclusion 157
References 157
CH$Chapter 17 Controlling the generation of hierarchical porosity in ZSM-5 by changing the silanization degree of protozeolitic units 158
Abstract 158
1. Introduction 158
2. Experimental section 159
3. Results and discussion 160
4. Conclusion 163
Acknowledgments 163
References 163
CH$Chapter 18 Modification via KOH attack of the porosity of templated and amorphous carbons 164
Abstract 164
1. Introduction 164
2. Experimental 165
3. Results and discussion 165
4. Conclusion 169
Acknowledgements 169
References 169
CH$Chapter 19 Synthesis of open zeolite frameworks by using a combination of bulky and cage-forming structure directing agents 170
Abstract 170
1. Introduction 170
2. Experimental 171
3. Results and discussion 171
4. Conclusion 175
Acknowledgments 175
References 175
CH$Chapter 20 Tailoring mesoporosity and intrawall porosity in large pore silicas: synthesis and nitrogen sorption behavior 176
Abstract 176
1. Introduction 176
2. Experimental section 177
3. Results and discussion 177
4. Conclusion 182
References 182
CH$Chapter 21 Preparation of MFI type zeolite with hierarchical pores system as new supports for deposition of metal clusters 184
Abstract 184
1. Introduction 184
2. Experimental 184
3. Results and Discussion 185
4. Conclusions 189
Acknowledgements 189
References 189
CH$Chapter 22 Synthesis methodology, acidity and catalytic behaviour of the 18 x 10 member ring pores ITQ-33 zeolite 190
Abstract 190
1. Introduction 190
2. Experimental 191
3. Results and discussion 192
4. Conclusion 195
References 195
CH$Chapter 23 Assembling mode of alumina and zirconia particles inside the mesopores of SBA-15 under high loading 196
Abstract 196
1. Introduction 196
2.Experimental 197
3.Results and discussion 197
4. Conclusion 201
References 201
CH$Chapter 24 Hofmeister anion effect on the formation of zeolite beta 202
Abstract 202
1. Introduction 202
2. Experimental 203
3. Results 203
4. Discussion 206
References 207
CH$Chapter 25 Synthesis of ZnO nanoparticles supported on zeolites and their cathodoluminescence properties 208
Abstract 208
1. Introduction 208
2. Experimental 208
3. Results and discussion 209
4. Conclusion 211
Acknowledgements 211
References 211
CH$Chapter 26 Stabilization of copper nanoparticles in Cu-ZSM-5 212
Abstract 212
1. Introduction 212
2. Experimental Section 212
3. Results and discussion 213
4. Conclusions 215
References 215
CH$Chapter 27 Tetralkylammonium bromide salts as directing agents for the CAL family molecular sieves 216
Abstract 216
1. Introduction 216
2. Experimental 216
3. Results and Discussion 217
Conclusion 219
References 219
CH$Chapter 28 Synthesis and characterization of zeolite Li-ABW from Li2O-Al2O3-SiO2-H2O 220
Abstract 220
1. Introduction 220
2. Experimental 220
3. Results and discussion 221
4. Conclusion 223
References 223
CH$Chapter 29 Effect of various external silicon sources on the properties of aluminosilicate mesoporous solids prepared from ZSM-5 224
Abstract 224
1. Introduction 224
2. Experimental section 224
3. Results and discussion 225
4. Conclusion 227
References 227
CH$Chapter 30 Cesium bearing ultramarine prepared from zeolites 228
Abstract 228
1. Introduction 228
2. Experimental 228
3. Results and discussion 229
4. Conclusion 231
References 231
CH$Chapter 31 Effect of residual Na on the low temperature synthesis of monoclinic celsian from zeolite Ba-A 232
1. Introduction 232
2. Experimental 232
3. Results and discussion 233
4. Conclusion 235
References 235
CH$Chapter 32 Preparation of AlMepO materials on steam-assisted conversion method 236
Abstract 236
1. Introduction 236
2. Experipmental 236
3. Results and discussion 237
4. Conclusion 239
Acknowledgement 239
REFERENCES 239
CH$Chapter 33 Structural characterization of highly stable Pt–Ni supported zeolites and its catalytic performance for methane reforming with CO2 240
Abstract 240
1. Introduction 240
2. Experimental Section 241
3. Results and Discussion 241
4. Conclusion 243
References 243
CH$Chapter 34 Synthesis of B-Beta zeolite and its modification with orthophosphoric acid 244
Abstract 244
1. Introduction 244
2. Experimental 244
3. Results and discussion 245
Acknowledgements 247
References 247
CH$Chapter 35 Control of morphology and mesoporosity of SAPO using engineered surfactants 248
Abstract 248
1. Introduction 248
2. Experimental 248
3. Results and Discussion 249
4. Conclusion 251
Acknowledgement 251
References 251
CH$Chapter 36 Deposition of Ti-modified aluminium-free zeolite Beta on SBA-15 252
Abstract 252
1. Introduction 252
2. Experimental 252
3. Results and discussion 253
4. Conclusion 255
References 255
CH$Chapter 37 The influence of metal nature on the structure, adsorption and acidic properties of aluminophosphate with VFI structure 256
Abstract 256
1. Introduction 256
2. Experimental 256
3. Results and discussion 257
4. Conclusion 259
References 259
CH$Chapter 38 A new synthesis route to nano-sized ß-zeolite with organic silane containing surfactant 260
Abstract 260
1. Introduction 260
2. Experimental 260
3. Results and Discussion 261
Acknowledgements 263
References and notes 263
CH$Chapter 39 Effects of structure-directing agents on hydrothermal conversion of FAU type zeolite 264
Abstract 264
1. Introduction 264
2. Experimental 264
3. Results and Discussion 265
4. Conclusion 267
References 267
CH$Chapter 40 Synthesis and structure of polymorph B of Beta zeolite 268
Abstract 268
1. Introduction 268
2. Experimental 269
3. Synthesis of polymorph B of beta family 269
4. Determination of polymorph B structure 270
References 271
CH$Chapter 41 Optimization of zeolite Y synthesis using industrial reagents by seeding technique 272
Abstract 272
1. Introduction 272
2. Experimental 273
3. Results and discussion 273
References 275
CH$Chapter 42 Post-conversion of MWW lamellar precursors into metallosilicates with large porosity 276
Abstract 276
1. Introduction 276
2. Experimental 276
3. Result and discussion 277
4. Conclusion 279
Acknowledgments 279
References 279
CH$Chapter 43 Synthesis of SAPO-31 with di-n-pentylamine: influence of chemical composition and crystallization conditions 280
Abstract 280
1. Introduction 280
2. Experimental 280
3. Results and Discussion 280
References 283
CH$Chapter 44 Charge matching between the occluded organic cations and zeolite framework as structure directing effect in zeolite synthesis 284
Abstract 284
1. Introduction 284
2. Experimental 284
3. Results and discussion 285
4. Conclusions 287
Acknowledgements 287
References 287
CH$Chapter 45 Synthesis and characterization of zeolitic composite ZSM-5/MOR with multi-modal pores 288
Abstract 288
1. Introduction 288
2. Experimental section 288
3. Result and Discussion 289
4. Conclusion 291
Acknowledgement 291
References 291
CH$Chapter 46 Acidity and hydrogenation performance of Beta zeolite aluminated by Na2AlO2 solution 292
Abstract 292
1. Introduction 292
2. Experimental 292
3. Results and Discussion 293
4. Conclusion 295
References 295
CH$Chapter 47 A complex study of copper reduction in erionite 296
Abstract 296
1. Introduction 296
2. Results and discussion 296
3. Conclusion 299
Acknowledgments 299
References 299
CH$Chapter 48 Synthesis of high silica CHA zeolites with controlled Si/Al ratio 300
Abstract 300
1. Introduction 300
2. Experimental 300
3. Results and discussion 301
4. Conclusions 303
References 303
CH$Chapter 49 Synthesis of zeolites using N,N’-tetramethylen-bis-(N-methylpiperidinium) dihydroxydes as directing agent 304
Abstract 304
1. Introduction 304
2. Experimental 304
3. Results and discussion 305
References 307
CH$Chapter 50 In which way alkaline-earth cations enhance the nucleation of alkali-templated zeolites? 308
Abstract 308
1. Introduction 308
2. Experimental 308
3. Results and discussion 309
4. Conclusion 311
References 311
CH$Chapter 51 Preparation of advanced zeolite catalysts by dry gel conversion 312
Abstract 312
1. Introduction 312
2. Experimental 312
3. Results and discussion 313
4. Conclusion 314
References 315
CH$Chapter 52 An elegant way to increase acidity in SAPOs: use of methylamine as co-template during synthesis 316
Abstract 316
1. Introduction 316
2. Experimental 316
3. Results and Discussion 317
4. Conclusion 319
Acknowledgements 319
References 319
CH$Chapter 53 Tailoring the porosity of hierarchical zeolites by carbon-templating 320
Abstract 320
1. Introduction 320
2. Experimental 320
3. Results and discussion 321
4. Conclusion 323
Acknowledgements 323
References 323
CH$Chapter 54 A new 2D fluorogallophosphate intercalated by double organic sheets of morpholine 324
Abstract 324
1. Introduction 324
2. Experimental section 325
References 327
CH$Chapter 55 Hydrothermally stable onion-like mesoporous silica 328
Abstract 328
1. Introduction 328
2. Experimental 328
3. Results and discussion 329
4. Conclusion 331
Acknowledgment 331
References 331
CH$Chapter 56 Synthesis of gold nanoparticles containing mesoporous silica by using gelatin as template: CO oxidation reaction 332
Abstract 332
1. Introduction 332
2. Experimental 333
3. Results and Discussion 333
4. Conclusion 335
Acknowledgments 335
References 335
CH$Chapter 57 The influence of ethylene glycol on the preparation of K2SnSi3O9•H2O 336
Abstract 336
1. Introduction 336
2. Experimental 336
3. Results and discussion 337
4. Conclusions 339
Acknowledgment 339
References 339
CH$Chapter 58 Incorporation of titanium into polymorph C of zeolite beta 340
Abstract 340
1. Introduction 340
2. Experimental 340
3. Results and discussion 341
4. Conclusion 343
References 343
CH$Chapter 59 Mesoporous TiO2-Y2O3-ZrO2 oxides with crystalline framework obtained by surfactant template synthesis 344
Abstract 344
1. Introduction 344
2. Experimental 344
3. Results and Discussion 345
4. Conclusion 347
References 347
CH$Chapter 60 The synthesis and bioactivity in vitro of functionalized mesoporous bioactive glasses 348
Abstract 348
1. Introduction 348
2. Experimental 348
3. Results and Discussion 349
Conclusion 351
References 351
CH$Chapter 61 Open-framework germanates formed by the flexible Ge10 cluster 352
Abstract 352
1. Introduction 352
2. Results and discussion 352
3. Conclusion 354
Acknowledgements 355
References 355
CH$Chapter 62 Control of SBA-15 materials morphology by modification of synthesis conditions 356
Abstract 356
1. Introduction 356
2. Experimental Section 356
3. Results and discussion 357
References 359
CH$Chapter 63 Immobilization of ionic liquids within micro- and mesoporous materials 360
Abstract 360
1. Introduction 360
2. Experimental 360
3. Results and discussions 361
4. Conclusion 363
References 363
CH$Chapter 64 Primary linear diamines as structure directing agents in hydrothermal synthesis of germanates 364
Abstract 364
1. Introduction 364
2. Experimental section 365
3. Results 365
References 367
CH$Chapter 65 Dynamics of PEO-PPO-PEO block copolymer aggregation and silicate mesophase formation monitored by time-resolved ATR-FTIR spectroscopy 368
Abstract 368
1. Introduction 368
2. Experimental 369
3. Results and discussion 369
4. Conclusion 371
Acknowledgment 371
References 371
CH$Chapter 66 Layered hybrid materials with nanotechnological applications: use of disilane precursors as pillaring agents 372
Abstract 372
1. Introduction 372
2. Experimental 373
3. Results and Discussion 373
4. Conclusion 375
Acknowledgment 375
References 375
CH$Chapter 67 Mesoporous aluminosilicates assembled from dissolved LTA precursor 376
Abstract 376
1. Introduction 376
2. Experimental Section 377
3. Results and Discussion 377
4. Conclusion 379
Acknowledgment 379
References 379
CH$Chapter 68 Polystyrene modified hybrid materials based on ordered mesoporous silica 380
Abstract 380
1. Introduction 380
1. Experimental 380
3. Results and discussion 381
4. Conclusion 383
References 383
CH$Chapter 69 Open-framework germanates – A study of nets and tilings 384
Abstract 384
1. Introduction 384
2. Experimental 384
3. Results and Discussion 385
4. Conclusion 385
Acknowledgements 387
References 387
CH$Chapter 70 Poly(ethylene imine) functionalized mesoporous silica nanoparticle for biological applications 388
Abstract 388
1. Introduction 388
2. Experimental 389
3. Results and Discussion 389
4. Conclusion and Outlook 391
5. Acknowledgments 391
References 391
CH$Chapter 71 New MCF type supports for platinum – characterization of Pt/MCF and Pt/NbMCF and comparison with Pt/MCM-41 392
Abstract 392
1. Introduction 392
2. Experimental 392
3. Results and discussion 393
4. Conclusion 395
Acknowledgement 395
References 395
CH$Chapter 72 Effect of the porosity and hydrothermal stability of SBA-16 type mesoporous silica on the characteristics of their carbon replicas 396
Abstract 396
1. Introduction 396
2. Experimental 396
3. Results and discussion 397
4. Conclusion 399
Acknowledgement 399
References 399
CH$Chapter 73 Microwave synthesis of nanosized VS-1 and the preparation of thin film 400
Abstract 400
1. Introduction 400
2. Experimental 401
3. Results and discussion 401
4. Conclusions 403
References 403
CH$Chapter 74 A comprehensive strategy for the immobilization of lipase in ordered mesoporous materials 404
Abstract 404
1. Introduction 404
2. Experimental 405
3. Results and discussion 405
References 407
CH$Chapter 75 Polymer coated silica-based mesoporous materials for controlled drug release 408
Abstract 408
1. Introduction 408
2. Experimental 408
3. Results and Discussion 409
References 411
CH$Chapter 76 A simple way to design highly active titania/mesoporous silica photocatalysts 412
Abstract 412
1. Introduction 412
2. Experimental 412
3. Results and discussion 413
Acknowledgements 415
References 415
CH$Chapter 77 Composite materials containing zeolitic layers deposited on the silica and silica/alumina porous monoliths 416
Abstract 416
1. Introduction 416
2. Experimental 417
3. Results and Discussion 417
4. Conclusion 419
Acknowledgement 419
References 419
CH$Chapter 78 Hydrothermal synthesis of MWW-type zirconosilicate 420
Abstract 420
1. Introduction 420
2. Experimental 420
3. Results and Discussion 421
4. Conclusion 423
Acknowledgements 423
References 423
CH$Chapter 79 Calixarene-modified multi-wall carbon nanotubes 424
Abstract 424
1. Introduction 424
2. Experimental 425
3. Results and Discussion 425
4. Conclusion 427
Acknowledgments 427
References 427
CH$Chapter 80 Vapour phase functionalization without degradation of the framework structure of periodic ordered mesoporous ethylenesilica 428
Abstract 428
1. Introduction 428
2. Experimental 428
3. Results and Discussion 429
References 431
CH$Chapter 81 Synthesis conditions and properties of Ti-MCM-41 432
Abstract 432
1. Introduction 432
2. Experimental Section 432
3. Results and Discussion 433
4. Conclusion 435
References 435
CH$Chapter 82 New mesoporous metal oxides as gas sensors 436
Abstract 436
1. Introduction 436
2. Experimental 436
3. Results and Discussion 437
4. Conclusion 438
References 439
CH$Chapter 83 Mesoporous tin(IV) phosphates 440
Abstract 440
1. Introduction 440
2. Experimental 440
3. Results and discussion 441
4. Conclusion 443
References 443
CH$Chapter 84 A thermal stable thorium-doped mesoporous zirconia 444
Abstract 444
1. Introduction 444
2. Experimental 445
3. Results and discussion 445
4. Conclusion 447
Acknowledgement 447
References 447
CH$Chapter 85 Novel methodology for facile preparation of mesoporous silicate by ultrasound radiation 448
Abstract 448
1 Introduction 448
2. Experimental 448
3. Results and discussion 449
4. Conclusion 451
Acknowledgement 451
References 451
CH$Chapter 86 Vapor phase synthesis of mesoporous silica thin films with a 3D pore structure 452
Abstract 452
1. Introduction 452
2. Experimental 452
3. Results and discussion 453
4. Conclusion 455
Acknowledgments 455
References 455
CH$Chapter 87 Synthesis and characterization of mesoporous structures using carbon particles 456
Abstract 456
1. Introduction 456
2. Experimental 456
3. Results and Discussion 457
References 459
CH$Chapter 88 Role of Na in the ionic equilibrium ruling the synthesis of mesoporous FSM-16 materials 460
Abstract 460
1. Introduction 460
2. Experimental 461
3. Results and discussion 461
References 463
Chapter 89 Ibuprofen delivery behaviour on MCM-41: influence of organic groups amount 464
Abstract 464
1. Introduction 464
2.Experimental 464
3. Results and discussion 465
4. Conclusion 467
References 467
Section 4 B – Metal Organic Frameworks (MOFs) and sol-gel materials 468
CH$Chapter 90 A novel metal-organic framework with pcu topology constructed from cadmium and 1, 4-diaza-bicyclo [2.2.2] octane-N, N’-dioxide 470
Abstract 470
1. Introduction 470
2. Experimental Section 471
3. Results and Discussion 472
4. Conclusion 474
Acknowledgments 474
References 474
CH$Chapter 91 A comparison of zeolites and metal organic frameworks as storage and delivery vehicles for biologically active nitric oxide 476
Abstract 476
1. Introduction 476
2. Experimental 477
3. Results and discussion 478
4. Conclusion 481
Acknowledgements 481
References 481
CH$Chapter 92 The use of aluminium and others p elements (gallium, indium) for the generation of MOF-type materials 482
Abstract 482
1. Introduction 482
2. Results and discussion 483
References 484
CH$Chapter 93 A porous chiral lanthanide metal-organic framework with high thermal stability 486
Abstract 486
1. Introduction 486
2. Experimental section 486
3. Results and discussion 487
4. Conclusions 489
Acknowledgements 489
References 489
CH$Chapter 94 Ultrasonic monitoring of zeolite A and Metal Organic Frameworks (MOFs) formations: A comparative study 490
Abstract 490
1. Introduction 490
2. Experimental 490
3. Results and discussion 491
4. Conclusion 493
Reference 493
CH$Chapter 95 Ionothermal synthesis of the metal-organic framework compound Cu3(BTC)2 494
Abstract 494
1. Introduction 494
2. Experimental Section 494
3. Results and discussion 495
Conclusion 497
References 497
CH$Chapter 96 Application of MOF-5 as a component of heterogeneous catalytic systems for the liquid phase hydrogenation 498
Abstract 498
1. Introduction 498
2. Experimental 498
3. Results and Discussion 499
4. Conclusion 501
Acknowledgements 501
References 501
CH$Chapter 97 MOF-5 as acid catalyst with shape selectivity properties 502
1. Introduction 502
2. Results and discussion 502
3. Conclusion 505
References 505
CH$Chapter 98 Tuning pore size and acidity of mesostructured aluminosilicates made by spray drying: design of new catalysts 506
Abstract 506
1. Introduction 506
2. Experimental 507
3. Results and discussion 508
4. Conclusions 511
Aknowledgments 511
References 511
CH$Chapter 99 How the stability of the microporous amorphous precursors of zeolites is affected by the Si/Al ratio 512
Abstract 512
1. Introduction 512
2. Experimental 513
3. Results and discussion 513
References 515
CH$Chapter 100 Amine-free lecithin templating of sponge mesoporous silicas 516
Abstract 516
1. Introduction 516
2. Experimental 516
3. Results and discussion 517
References 519
CH$Chapter 101 Sol-gel vanadium-titanium-molybdenum mixed oxides for oxidative dehydrogenation of ethane 520
Abstract 520
1. Introduction 520
2. Experimental section 520
3. Results and discussion 521
4. Conclusion 523
References 523
CH$Chapter 102 One-step synthesis of silica gel used in the controlled release of drug 524
Abstract 524
Introduction 524
2.Experimental section 524
3. Results and discussion 525
4. Conclusions 527
References 527
CH$Chapter 103 Effect of the evacuation mode of solvent on the textural, structural and catalytic properties of sulfated zirconia doped with cerium 528
Abstract 528
1. Introduction 528
2. Experimental 528
3. Results and discussion 529
4. Conclusion 531
References 531
Section 5 C – Natural zeolites 532
CH$Chapter 104 The comparison of the crystal structures of direnzoite, a new zeolite from Massif Central (France), and its synthetic counterpart ECR-1 534
Abstract 534
1. Introduction 534
2. Experimental 534
3. Results and Discussion 535
4. Conclusions 539
References 539
CH$Chapter 105 Mutinaíte in zeolite assemblage in metabasalts of villegas, northern Patagonian Andes, Rio Negro Argentina 540
Abstract 540
1. Introduction and geologic setting 540
2. Mineral Assemblage 540
3. Mineralogy of Mutinaite 541
4. Discussion 542
5. Conclusion 543
Acknowledgments 543
References 543
CH$Chapter 106 Competitive removal of lead(II) and zinc(II) from a binary aqueous solution on a fixed bed of natural zeolite 544
Abstract 544
1. Introduction 544
2. Experimental 544
3. Results and Discussion 545
4. Conclusion 547
References 547
CH$Chapter 107 Formation of catalytically active copper and nickel nanoparticles in natural zeolites 548
Abstract 548
1. Introduction 548
2. Experimental 548
3. Results and discussion 549
4. Conclusion 551
Acknowledgments 551
References 551
CH$Chapter 108 Properties of zeolitized tuff/organic matter aggregates relevant for their use in pedotechnique. IIb: Structural characterization with emphasis 552
Abstract 552
1. Introduction 552
2. Experimental methods 553
3. Results and Discussion 553
4. Conclusion 555
References 555
CH$Chapter 109 Zeolites in complex nitrogen biofertilizers 556
Abstract 556
1. Introduction 556
2. Experimental 557
3. Results and discussion 557
References 559
CH$Chapter 110 Distribution of Al, Ca, Fe and Mg in weathering extracts from Campanian Ignimbrite (yellow facies) 560
Abstract 560
1. Introduction 560
2. Experimental methods 560
3. Results and Discussion 561
4. Conclusion 563
References 563
CH$Chapter 111 Comparative analyses of physical properties of natural zeolites from armenia and USA 564
Abstract 564
1. Introduction 564
2. Experimental 564
3. Results and discussion 565
Acknowledgements 567
References 567
CH$Chapter 112 Characterization studies of deccan zeolites for the removal of the selenium from waste water 568
Abstract 568
Introduction 568
Experimental Methodology 568
Results and Discussion 569
Conclusion 570
References 570
CH$Chapter 113 Safe trapping of Cs in heat-treated zeolite matrices. Part 2 572
Abstract 572
1. Introduction 572
2. Experimental methods 573
3. Results and Discussion 573
4. Conclusion 575
References 575
Section 6 D – Adsorption, separation and diffusion 576
CH$Chapter 114 Adsorption and diffusion characterization of mesoporous Al-MCM-48 as a potential catalyst support 578
Abstract 578
1. Introduction 578
2. Experimental 579
3. Results and discussion 580
4. Conclusions 583
References 583
CH$Chapter 115 Zeolite-based discriminating gas sensors 584
Abstract 584
1. Introduction 584
2. Experimental 584
3. Results and Discussion 585
4. Conclusion 589
References 589
CH$Chapter 116 Application of modified zeolites and mesoporous materials for deodorization 590
Abstract 590
1. Introduction 590
2. Experimental 590
3. Results and discussion 591
4. Conclusion 595
Acknowledgements 595
References 595
CH$Chapter 117 Influence of defects on the water intrusion in silicalite-1 zeolite: confrontation of experimental and molecular simulation results 596
Abstract 596
1. Introduction 596
2. Experimental 596
3. Results and discussion 597
4. Conclusion 599
Acknowledgment 599
References 599
CH$Chapter 118 Zeolite multifunctional materials as the menthol carrier and nitrosamines trapper 600
Abstract 600
1. Introduction 600
2. Experimental 601
3. Results and Discussion 602
4. Conclusion 603
Acknowledgement 603
References 603
CH$Chapter 119 Inhibition of lubricant degradation by nanoporous materials 604
Abstract 604
1. Introduction 604
2. Experimental 604
3. Results and discussion 605
4. Conclusion 607
Acknowledgments 607
References 607
CH$Chapter 120 Remediation of hydrocarbon contaminants in groundwater using specific zeolites in full-scale pump& treat and demonstrative Permeable barrier
Abstract 608
1. Introduction 608
2. Experimental 609
3. Results and Discussion 609
4. Conclusion 611
References 611
CH$Chapter 121 Kinetics of diffusion-limited adsorption of hydrogen and nitrogen from (H2+N2) mixtures by LiLSX zeolite studied by DRIFTS 612
Abstract 612
1. Introduction 612
2. Experimental 612
3. Results and discussion 613
4. Conclusion 615
Acknowledgement 615
References 615
CH$Chapter 122 Adsorption of butane isomers on ferrierite : influence of the Si/Al ratio 616
Abstract 616
1. Introduction 616
2. Experimental 616
3. Results and discussion 617
4. Conclusion 619
References 619
CH$Chapter 123 Experimental and theoretical investigation of the sticking probability of aromatics on HZSM-5 and SiO2 620
Abstract 620
1. Introduction 620
2. Experimental 621
3. Results 621
4. Discussion 623
5. Conclusion 624
Acknowledgements 624
References 624
CH$Chapter 124 Microwave synthesis of Sr-ETS-4 and evaluation of its molecular sieving properties in the nitrogen/methane separation 626
Abstract 626
1. Introduction and objectives 626
2. Experimental 626
3. Results and discussion 627
4. Conclusion 629
References 629
CH$Chapter 125 The sorption dynamics of N2, CO2, CO and CH4 in zeolite and carbon molecular sieves 630
Abstract 630
1. Introduction 630
2. Experimental section 630
3. Results and discussion 631
4. Conclusion 633
References 633
CH$Chapter 126 Water sorption in faujasite- and chabazite type zeolites of varying lattice composition for heat storage applications 634
Abstract 634
1. Introduction 634
2. Experimental 634
3. Results and Discussion 635
4. Conclusion 637
Acknowledgement 637
References 637
CH$Chapter 127 Ferrierite and MCM-22 for the CO2 adsorption 638
Abstract 638
1. Introduction 638
2. Experimental 639
3. Results and discussion 639
4. Conclusion 641
Acknowledgements 641
References 641
CH$Chapter 128 Determining the transport diffusivity from intracrystalline concentration profiles 642
Abstract 642
1. Introduction 642
2. Experimental 642
3. Determining the transport diffusivity 643
4. Results and Discussion 644
5. Conclusion 645
Acknowledgement 645
References 645
CH$Chapter 129 Protein adsorption on silica molecular sieves 646
Abstract 646
1. Introduction 646
2. Experimental 646
3. Results and Discussion 647
4. Conclusion 649
References 649
CH$Chapter 130 Olefin/paraffin separation over the metal organic framework material Cu3(BTC)2 650
Abstract 650
1. Introduction 650
2. Experimental section 651
3. Results and discussion 651
4. Conclusions 653
References 653
CH$Chapter 131 Amine modified, micro-mesoporous matrices for CO2 retention: effect of occluded templates on performance 654
Abstract 654
1. Introduction 654
2. Experimental 655
3. Results and Discussion 655
4. Conclusion 657
References 657
CH$Chapter 132 Pre-concentration of organophosphorous compounds on porous silica materials 658
Abstract 658
1. Introduction 658
2. Experimental 658
3. Results and discussion 660
4. Conclusion 661
Acknowledgments 661
References 661
Section 7 E – Films and membranes 662
CH$Chapter 133 Monocrystal-thin b-oriented silicalite-1 assemblies by molecular imprinting: from membrane to micro-reactor applications 664
Abstract 664
1. Introduction 664
2. Experimental 665
3. Results and discussions 666
Acknowledgements 669
References 669
CH$Chapter 134 Photo-induced surface hydrophilic properties on the Ti- and V-containing mesoporous silica thin films 670
Abstract 670
1. Introduction 670
2. Experimental 671
3. Results and Discussion 671
4. Conclusion 675
Acknowledgments 675
References 675
CH$Chapter 135 Synthesis of Silicalite-1 films by a steam-assisted crystallization method 676
Abstract 676
1. Introduction 676
2. Experimental 676
3. Results and Discussion 677
4. Conclusions 679
Acknowledgements 679
References 679
CH$Chapter 136 Supported zeolite composite membranes synthesized by controlling the penetration or gelation of the precursor into the support pores 680
Abstract 680
1. Introduction 680
2. Experimental section 681
3. Results and discussion 681
4. Conclusion 683
References 683
CH$Chapter 137 Synthesis of zeolite LTA films in the presence of nucleation suppressors 684
Abstract 684
1. Introduction 684
2. Experimental 685
3. Results and Discussion 685
4. Conclusion 687
References 687
CH$Chapter 138 Mixed matrix membranes from nanostructured materials for gas separation 688
Abstract 688
1. Introduction 688
2. Experimental 689
Results and discussion 690
Acknowledgments 691
References 691
CH$Chapter 139 Synthesis of ordered mesoporous carbons in film morphology using organic–organic interaction approach 692
Abstract 692
1. Introduction 692
2. Experimental Section 693
3. Results and Discussion 693
4. Conclusion 695
Acknowledgment 695
References 695
CH$Chapter 140 Stainless-steel net supported ITQ-17 membrane potential for microlaser application 696
Abstract 696
1. Introduction 696
2. Experimental 697
3. Results and discussion 697
4. Conclusion 699
Acknowledgments 699
References 699
CH$Chapter 141 Measurement of the elastic properties of zeolite films using Metglas-zeolite composite sensors 700
Abstract 700
1. Introduction 700
2. Experimental 700
3. Analysis of resonance frequency measurements 701
4. Results and discussion 701
5. Conclusions 703
References 703
CH$Chapter 142 Defect-free zeolite membranes of the type BEA for organic vapour separation and membrane reactor applications 704
Abstract 704
1. Introduction 704
2. Experimental 705
3. Results and Discussion 705
4. Conclusions 707
References 707
CH$Chapter 143 Long-term stability of composite zeolite MFI membranes 708
Abstract 708
1. Introduction 708
2. Experimental 708
3. Results and discussion 709
Conclusion 711
Acknowledgements 711
References 711
CH$Chapter 144 BEA-type films grown in fluoride media for applications in spacecraft industry 712
Abstract 712
1. Introduction 712
2. Experimental 712
3. Results and discussion 713
4. Conclusion 715
Acknowledgments 715
References 715
Section 8 F – Theory and modelling 716
CH$Chapter 145 Thermodynamic study of water intrusion in hydrophobic zeolites by Monte Carlo simulations 718
Abstract 718
1. Introduction 718
2. Materials and Methods 718
3. Results and Discussion 720
4. Conclusion 723
Acknowledgment 723
References 723
CH$Chapter 146 Free energy calculation of the reaction path of the N2O decomposition over Fe(II)-ferrierite 724
Abstract 724
1. Introduction 724
2. Structure and active sites 724
3. Computational setup 726
4. Results and discussion 727
5. Conclusion 728
Acknowledgements 728
References 728
CH$Chapter 147 Going beyond SiO2 and AlPO4: stabilisation of "strained" hypothetical frameworks in exotic compositions 730
Abstract 730
1. Introduction 730
2. Methodology 731
3. Results and discussion 732
4. Conclusion 734
References 734
CH$Chapter 148 Modelling diffusion in zeolites with cellular automata 736
Abstract 736
1. Introduction 736
2. The Model 736
3. Some Applications 738
References 739
CH$Chapter 149 Modelling crystal growth in zeolite A 740
Abstract 740
1. Introduction 740
2. Methods 740
3. Results and Discussion 741
4. Conclusion and Further Study 742
Acknowledgements 743
References 743
CH$Chapter 150 Cu+, Ag+ and Na+ cationic sites in ZSM-5 interacting with benzene: DFT modeling 744
Abstract 744
1. Introduction 744
2. Methodology 744
3. Results and discussion 745
Acknowledegment 746
References 746
CH$Chapter 151 N2O decomposition on iron exchanged ferrierite. A combined periodic DFT and static IN-SITU FTIR study 748
Abstract 748
1. Introduction 748
2. Experimental 749
3. Results and discussion 749
4. Conclusion 750
Acknowledgements 750
References 751
CH$Chapter 152 Theoretical study of the structure and properties of Na-MOR and H-MOR zeolite models 752
Abstract 752
1. Introduction 752
2. Methodology 752
3. Results and Discussion 753
Acknowledgements 755
References 755
CH$Chapter 153 Using XRD for the modelling of interactions in (guest-host) systems: success and pitfalls 756
Abstract 756
1. Introduction 756
2. Experimental 756
3. Results and discussion 756
4. Conclusion 759
References 759
CH$Chapter 154 29Si NMR chemical shifts from Density Functional Theory incorporating solvent effects 760
Abstract 760
1. Introduction 760
2. Methods 761
3. Results And Discussion 761
4. Conclusion 763
References 763
CH$Chapter 155 Local geometry of AlO 4- and SiO4 tetrahedra in the silicone rich chabazite. A combined high resolution NMR and QM/MM Study 764
Abstract 764
1. Introduction 764
2. Experimental 764
3. Results and discussion 765
4. Conclusion 766
Acknowledgements 766
References 766
CH$Chapter 156 Density functional investigations on the acidic properties of the novel ZOL molecular sieves 768
Abstract 768
1. Introduction 768
2. Models and computational details 769
3. Results and discussion 769
4. Conclusion 771
Acknowledgements 771
References 771
CH$Chapter 157 Mathematical modelling of multicomponent transport in composite all-ceramic membranes containing a zeolitic phase 772
Abstract 772
1. Introduction 772
2. Experimental 772
3. Mathematical modeling 773
4. Examples of modeling 774
5. Conclusion 775
Acknowledgements 775
References 775
CH$Chapter 158 Recent theoretical insights into the role of the zeolite framework on methanol-to-olefin conversion 776
Abstract 776
1. Introduction 776
2. Computational Section 776
3. Results and Discussion 777
4. Conclusion 779
References 779
CH$Chapter 159 Simulation assisted determination of adsorbate structures 780
Abstract 780
1 Introduction 780
2 Concept 782
3 Implementation 782
4 Future prospects 784
References 785
CH$Chapter 160 First principles studies on boron sites 786
Abstract 786
1. Introduction 786
2. Method of Calculation 786
3. Results and Discussion 787
4. Conclusion 788
References 789
Section 9 G – Characterization of microporous and mesoporous solids 790
CH$Chapter 161 On the intergrowth structure of zeolite crystals as revealed by wide field and confocal fluorescence microscopy of the template removal 792
Abstract 792
1. Introduction 792
2. Results and Discussion 793
3. Conclusions 796
Acknowledgment 796
References 796
CH$Chapter 162 Fluorescent mesoporous hybrid materials based on GFP adsorbed into SBA-15 798
Abstract 798
1. Introduction 798
2. Experimental 799
3. Results and Discussion 800
4. Conclusion and Perspectives 803
References 803
CH$Chapter 163 Determination of Si-Al connectivities in zeolites with 2D Al-Si RAPT CPMAS CPMG HETCOR NMR techniques 804
Abstract 804
1. Introduction 804
2. Experimental 805
3. Results and discussion 806
4. Conclusion 808
Acknowledgements 809
References 809
CH$Chapter 164 High-Resolution scanning electron and atomic force microscopies: observation of nanometer features on zeolite surfaces 810
Abstract 810
1. Introduction 810
2. Experimental 811
3. Results and discussion 811
4. Conclusion 815
5. Acknowledgements 815
References 815
CH$Chapter 165 Aluminum siting in the framework of silicon rich zeolites. A ZSM-5 study 816
Abstract 816
1. Introduction 816
2. Experimental 817
3. Computational model and methods 817
4. Results 818
5. Discussion 819
6. Conclusion 820
Acknowledgements 820
References 820
CH$Chapter 166 Molecular spectroscopy of alkaline silicate solutions 822
Abstract 822
1. Introduction 822
2. Experimental 823
3. Results and discussion 824
References 827
CH$Chapter 167 The influence of alkali cations on the structure of zeolite precursor gels investigated by positron lifetime spectroscopy 828
Abstract 828
1. Introduction 828
2. Experimental 829
3. Results and discussion 830
4. Conclusion 832
Acknowledgement 832
References 832
CH$Chapter 168 Zeolite structure determination using electron crystallography 834
Abstract 834
1. Introduction 834
2. Experimental 835
3. Results and discussion 835
4. Conclusion 839
Acknowledgements 839
References 839
CH$Chapter 169 SANS study of the mechanisms and kinetics of the synthesis of mesoporous materials from micelles of tri-block copolymers 840
Abstract 840
1. Introduction 840
2. Results and discussion 841
3. Comparison between SAXS and SANS studies 843
4. Conclusion 845
Acknowledgements 845
References 845
CH$Chapter 170 Two-Dimensional correlation analysis to study Brønsted acid sites in zeolites 846
Abstract 846
1. Introduction 846
2. Instrumentation and materials 847
3. Results and discussion 848
4. Conclusion 851
References 851
CH$Chapter 171 29Si NMR, XRD and HRTEM investigation of Ti-Beta particle formation 852
Abstract 852
1. Introduction 852
2. Experimental 852
3. Results and discussion 853
References 855
CH$Chapter 172 Water adsorption on high silica zeolites. Formation of hydroxonium ions and hydrogen-bonded adducts 856
Abstract 856
1. Introduction 856
2. Experimental 856
3. Results and Discussion 857
4. Conclusion 859
Acknowledgement 859
References 859
CH$Chapter 173 Zeolite inner surface characteristics and influence on confined phases 860
Abstract 860
1. Introduction 860
2. Results and discussion 862
References 863
CH$Chapter 174 Hydrothermal synthesis and characterization of perchlorate enclathrated sodalite Na8[GaSiO4]6 (CIO4)2 and silver derivatives of the type 864
Abstract 864
1. Introduction 864
2. Experimental 864
3. Results and discussion 865
Acknowledgements 867
References 867
CH$Chapter 175 Extraframework cations in faujasite type zeolites: analytical methods and general distribution trends 868
Abstract 868
1. Introduction 868
2. Analytical methods 868
3. Cation distribution trends 871
References 871
CH$Chapter 176 On the platinum species of Pt/H-MCM-22 catalyst for methane combustion 872
Abstract 872
1. Introduction 872
2. Materials and methods 873
3. Results and discussion 873
4. Conclusion 875
References 875
CH$Chapter 177 Study by transmission electron microscopy tomography of gold nanoparticles in reduced Au/zeolites 876
Abstract 876
1. Introduction 876
2. Experimental 876
3. Results 877
4. Conclusion 879
Acknowledgements 879
References 879
CH$Chapter 178 Formation and nature of active sites in the FAU-and BEA-composites 880
Abstract 880
1. Introduction 880
2. Experimental 881
3. Results and discussion 881
4. Conclusion 883
References 883
CH$Chapter 179 IR extinction coefficients as a criterion for chemical activation upon adsorption: propene interaction with cationic forms of y zeolite 884
Abstract 884
1. Introduction 884
2. Experimental 884
3. Results and discussion 885
4. Conclusion 887
Acknowledgment 887
References 887
CH$Chapter 180 Co sites in CoZSM-5 and their interaction with propene molecules 888
Abstract 888
1. Introduction 888
2. Experimental 889
3. Results and discussion 889
Acknowledgment 891
References 891
CH$Chapter 181 Determination of the 5A zeolite acidity: an infrared study 892
Abstract 892
1. Introduction 892
2. Experimental 892
3. Results and discussion 893
4. Conclusion 895
References 895
CH$Chapter 182 Probing the strength, concentration and environment of basic sites in zeolites by IR spectroscopy 896
Abstract 896
1. Introduction 896
2. Experimental 897
3. Results and discussion 897
4. Conclusion 899
5. Acknowledgments 899
References 899
CH$Chapter 183 Nature of active sites in the Fe-TON zeolites: Mössbauer and IR studies 900
Abstract 900
1. Introduction 900
2. Experimental 900
3. Results and discussion 901
4. Conclusion 903
References 903
CH$Chapter 184 Vibrational dynamics of small molecules adsorbed on cation sites in zeolite channel systems: IR and DFT investigation 904
Abstract 904
1. Introduction 904
2. Experimental methods and calculations 905
3. Results and discussion 905
4. Conclusion 906
References 907
CH$Chapter 185 Study of the relation between the acidity and activity of zeolites in the conversion of hexane 908
Abstract 908
1. Introduction 908
2. Experimental 909
3. Results and discussion 909
4. Conclusion 911
Acknowledgements 911
References 911
CH$Chapter 186 Solid-state ion exchange dynamics of cadmium in zeolite Y 912
Abstract 912
1. Introduction 912
2. Experimental section 912
3. Results and discussion 913
4. Conclusion 915
Acknowledgements 915
References 915
CH$Chapter 187 Selective catalytic reduction of NOx by NH3 on V-Mo-zeolite prepared by solid-state ion exchange method 916
Abstract 916
1. Introduction 916
2. Experimental 916
3. Results and discussion 917
References 919
CH$Chapter 188 Structural study by solid state NMR and powder X-ray diffraction of the pure silica chabazite through water intrusion-extrusion processes 920
Abstract 920
1. Introduction 920
2. Experimental 920
3. Results and discussion 921
4. Conclusion 923
References 923
CH$Chapter 189 Growth of nano-zeolite beta on montmorillonite: preparation, characterization and catalytic performance 924
Abstract 924
1. Introduction 924
2. Experimental 924
3. Results and discussion 924
4. Conclusion 927
References 927
CH$Chapter 190 Combined TPD and theoretical investigation of CO desorption from Cu-K-FER zeolite 928
Abstract 928
1. Introduction 928
2. Materials and Methods 928
3. Results and discussion 930
4. Conclusion 931
Acknowledgement 931
References 931
CH$Chapter 191 Study of the antacid properties of carbonated disordered cancrinite and its intermediate phase 932
Abstract 932
1. Introduction 932
2. Experimental 932
3. Results and Discussion 933
4. Conclusion 935
Acknowledgment 935
References 935
CH$Chapter 192 In situ study of dehydration of ECR1: Na-as synthesized and NH4-exchanged in comparison 936
Abstract 936
1. Introduction 936
2. Experimental 936
3. Results and Discussion 937
4. Conclusion 939
References 939
CH$Chapter 193 Toward a better understanding of the templating effect in the formation of porous frameworks: AlPO4-5 a case of study 940
Abstract 940
1. Introduction 940
2. Experimental details and characterization techniques 941
3. Results and discussion 941
4. Conclusion 943
Acknowledgement 943
References 943
CH$Chapter 194 Shape-dependent crystal growth of zeolite L studied by atomic force microscopy 944
Abstract 944
1. Introduction 944
2. Experimental 944
3. Results and discussion 945
4. Conclusion 947
References 947
CH$Chapter 195 Determination of zeolite closed porosity in (1D) channel systems (AFI and MTW types) 948
Abstract 948
1. Introduction 948
2. Results and discussion 950
References 951
CH$Chapter 196 CAL-4, a structural study of a dual templated chabazite-type silicoaluminophosphate 952
Abstract 952
1. Introduction 952
2. Experimental 952
3. Results and discussion 953
4. Conclusion 954
References 954
CH$Chapter 197 Translation and reorientation of CD4 molecules in zeolites as studied by deuteron NMR relaxation 956
Abstract 956
1. Introduction 956
2. Theory 957
3. Experimental 958
4. Discussion 959
Acknowledgements 959
References 959
CH$Chapter 198 Copper exchanged Silicalite-1: evidence of the location of copper oxide nanoclusters in the supermicropores of S-1 960
Abstract 960
1. Introduction 960
2. Experimental 961
3. Results and discussion 961
4. Conclusion 962
References 963
CH$Chapter 199 57Fe Mössbauer study of iron distribution in zeolite A during zeolite crystallization process 964
1. Introduction 964
2. Experimental 964
3. Results and discussion 965
4. Conclusion 967
Acknowledgement 967
References 967
CH$Chapter 200 Organosilver radicals in molecular sieves 968
Abstract 968
1. Introduction 968
2. Results and discussion 968
References 971
CH$Chapter 201 27Al and 29Si MAS-NMR study of the MCM-22 zeolite modified by steam and alkaline treatments 972
Abstract 972
1. Introduction 972
2. Experimental 973
3. Results and discussion 973
4. Conclusion 975
Acknowledgment 975
References 975
CH$Chapter 202 Combined MS and NMR: attractive route to future understanding of the first stages of nucleation of nanoporous materials 976
Abstract 976
1. Introduction 976
2. Experimental 976
3. Results and Discussion 977
4. Conclusion 979
References 979
CH$Chapter 203 Nitrogen-containing carbon replicas of SBA-15 and MLV prepared from pyrrole as carbon precursor 980
Abstract 980
1. Introduction 980
2. Experimental 980
3. Results and Discussion 980
4. Conclusion 983
References 983
CH$Chapter 204 Solid-State NMR investigation of formation of mesoporous thin films and powders 984
Abstract 984
1. Introduction 984
2. Experimental 984
3. Results and discussion 985
4. Conclusion 987
References 987
CH$Chapter 205 Acidic and adsorptive properties of Al modified SBA-15 samples 988
Abstract 988
1. Introduction 988
2. Experimental 988
3. Results and discussion 989
4. Conclusion 991
References 991
CH$Chapter 206 Pore shape affects the determination of the pore size of ordered mesoporous silicas by mercury intrusion 992
Abstract 992
1. Introduction 992
2. Experimental 992
3. Results and discussion 992
4. Conclusion 995
References 995
CH$Chapter 207 Synthesis of multiwall carbon nanotubes by using mesoporous aluminosilicates 996
Abstract 996
1. Introduction 996
2. Experimental 996
3. Results and discussion 997
4. Conclusion 999
Acknowledgement 999
References 999
CH$Chapter 208 On the crystal structure solution and characterization of ECS-2, a novel microporous hybrid organic-inorganic material 1000
Abstract 1000
1. Introduction 1000
2. Experimental 1000
3. Results and discussion 1001
References 1003
CH$Chapter 209 Methodology for the characterization of micro-mesoporous acidic materials 1004
Abstract 1004
1. Introduction 1004
2. Experimental 1004
3. Results and discussion 1005
4. Conclusion 1007
References 1007
CH$Chapter 210 Characterization of the acid-base properties of transition aluminas by model reaction and correlation with IR study 1008
Abstract 1008
1. Introduction 1008
2. Experimental 1009
3. Results and discussion 1009
Conclusion 1011
References 1011
CH$Chapter 211 A kinetic study of the thermal degradation of cetyl-trimethylammonium bromide inside the mesoporous SBA-3 molecular sieve 1012
Abstract 1012
1. Introduction 1012
2. Experimental 1013
3. Results and discussion 1013
4. Conclusion 1015
References 1015
CH$Chapter 212 Sensitivity of the C-constant of BET-isotherm to the content of micropore volume in mesoporous matrix 1016
Abstract 1016
1. Introduction 1016
2. Experimental 1016
3. Results and discussion 1017
4. Conclusion 1019
Acknowledgement 1019
References 1019
CH$Chapter 213 I2 as a probe for aromatic rings in phenylene-bridged periodic mesoporous organosilica 1020
Abstract 1020
1. Introduction 1020
2. Experimental Section 1020
3. Results and Discussion 1021
4. Conclusion 1023
References 1023
CH$Chapter 214 Characterization of LTA- and CHA- type zeolites by means of solid state NMR 1024
Abstract 1024
1. Introduction 1024
2. Experimental 1024
3. Results and discussion 1024
Acknowledgments 1027
References 1027
CH$Chapter 215 Effect of the preparation method on physico-chemical and catalytic properties of transition metal M substituted Keggin type MPMo12O40 1028
Abstract 1028
1. Introduction 1028
2. Experimental 1028
3. Results and discussion 1029
4. Conclusion 1031
References 1031
CH$Chapter 216 TEM study of regulated mesoporous Mn2O3 hexagonal nanoplates 1032
Abstract 1032
1. Introduction 1032
2. Experimental 1032
3. Result and Discussion 1033
4. Conclusion 1035
Acknowledgements 1035
References 1035
CH$Chapter 217 Structural changes of MCM-41 spheres during ibuprofen release to SBF 1036
Abstract 1036
1. Introduction 1036
2. Experimental 1036
3. Results and Discussion 1037
4. Conclusion 1039
References 1039
CH$Chapter 218 Evidence of heterogeneous dual cation sites in zeolites by combined IR and DFT investigation 1040
Abstract 1040
1. Introduction 1040
2. Experimental 1040
3. Results and discussion 1041
4. Conclusion 1043
Acknowledgement 1043
References 1043
Section 10 H – Catalysis 1044
CH$Chapter 219 Biodiesel production by immobilized lipase on zeolites and related materials 1046
Abstract 1046
1. Introduction 1046
2. Experimental 1047
3. Results and discussion 1048
4. Conclusion 1050
References 1051
CH$Chapter 220 Oxidative desulfurization of sulfur compounds: Oxidation of thiophene and derivatives with hydrogen peroxide using Ti-Beta catalyst 1052
Abstract 1052
1. Introduction 1052
2. Experimental section 1052
3. Results and discussion 1053
4. Conclusions 1054
References 1055
CH$Chapter 221 Degradation of pure and waste polyolefins and PVC in the presence of modified porous catalysts 1056
Abstract 1056
1. Introduction 1056
2. Experimental 1057
3. Results and discussion 1058
4. Conclusion 1061
References 1061
Acknowledgement 1061
CH$Chapter 222 Acidic properties of SSZ-33 and SSZ-35 novel zeolites: a complex I.R. and MAS NMR study 1062
Abstract 1062
1. Introduction 1062
2. Experimental 1063
3. Results and discussion 1063
4. Conclusion 1067
Acknowledgement 1067
References 1067
CH$Chapter 223 Metallic active species for deNOx SCR by methane with Co and Pd/Co HFER catalysts 1068
Abstract 1068
1. Introduction 1068
2. Experimental 1069
3. Results and discussion 1069
4. Conclusion 1073
Acknowledgments 1073
References 1073
CH$Chapter 224 The effect of cation siting in Co, Ag-ferrierite on CH4-NOX-SCR 1074
Abstract 1074
1. Introduction 1074
2. Experimental 1075
3. Results and discussion 1076
4. Conclusion 1079
References 1079
CH$Chapter 225 Oxidation of Indole with CPO and GOx Immobilized on SBA-15 1080
Abstract 1080
1. Introduction 1080
2. Experimental section 1081
3. Results and discussion 1082
4. Conclusions 1084
References 1085
CH$Chapter 226 Comparison of promoted alkaline–earth oxide catalysts prepared through evaporation and sol–gel methods by their catalytic performance in 1086
Abstract 1086
1. Introduction 1086
2. Experimental 1086
3. Results and discussion 1088
4. Conclusion 1091
Acknowledgements 1091
References 1091
CH$Chapter 227 Rh-TPPTS/LDH – A new heterogeneous catalyst for the synthesis of functionalized .-lactone 1092
Abstract 1092
1. Introduction 1092
2. Experimental Section 1093
3. Results and discussion 1094
4. Conclusion 1096
Acknowledgement 1097
References 1097
CH$Chapter 228 Oxidation intermediates and reaction pathways of wet hydrogen peroxide oxidation of p-coumaric acid over (Al-Fe)PILC catalyst 1098
Abstract 1098
1. Introduction 1098
2. Experimental 1099
3. Results and discussion 1100
Conclusion 1103
References 1103
CH$Chapter 229 Zeolite-bentonite hybrid catalysts for the pyrolysis of woody biomass 1104
Abstract 1104
1. Introduction 1104
2. Experimental section 1104
3. Results and discussion 1106
4. Conclusion 1109
Acknowledgements 1109
References 1109
CH$Chapter 230 Modulation of zeolite acidity by post-synthesis treatments in Mo/HZSM-5 catalysts for methane dehydroaromatization 1110
Abstract 1110
1. Introduction 1110
2. Experimental 1110
3. Results and discussion 1112
Acknowledgements 1115
References 1115
CH$Chapter 231 Amino functionalized silica nanotube for base catalyzed reaction 1116
Abstract 1116
1. Introduction 1116
2. Experimental 1117
3. Results and Discussion 1118
4. Conclusion 1120
Acknowledgments 1120
References 1121
CH$Chapter 232 Zeolite ITQ-21 as catalyst for the alkylation of benzene with propylene 1122
Abstract 1122
1. Introduction 1122
2. Experimental 1123
3. Results and discussion 1123
4. Conclusion 1125
Acknowledgements 1125
References 1125
CH$Chapter 233 Catalytic activity of the beta zeolite with enhanced textural properties in the Friedel-Crafts acylation of aromatic compounds 1126
Abstract 1126
1. Introduction 1126
2. Experimental 1127
3. Results and discussion 1127
4. Conclusion 1129
References 1129
CH$Chapter 234 Radioactive 11C-methyl labeling for study of methanol co-reaction with methyl iodide on Fe - Beta zeolite 1130
Abstract 1130
1. Introduction 1130
2. Experimental 1131
3. Results and Discussion 1131
4. Conclusion 1133
Acknowledgements 1133
References 1133
CH$Chapter 235 Ammoxidation of ethylene to acetonitrile over Cr-ZSM-5 catalysts 1134
Abstract 1134
1. Introduction 1134
2. Experimental 1135
3. Results and Discussion 1135
4. Conclusion 1137
References 1137
CH$Chapter 236 n-dodecane thermal and catalytic cracking under supercritical conditions 1138
Abstract 1138
1. Introduction 1138
2. Experimental 1139
3. Results 1140
4. Conclusion 1141
References 1141
CH$Chapter 237 Hydroisomerization of n-hexadecane on Pt/HBEA bifunctional catalysts: effect of the zeolite crystallites size on the reaction scheme 1142
Abstract 1142
1. Introduction 1142
2. Experimental 1143
3. Results 1143
Discussion and conclusion 1144
References 1145
CH$Chapter 238 Liquid-phase alkylation of phenol with t-Butanol over H-MCM-22, H-ITQ-2 and H-MCM-36 catalysts 1146
Abstract 1146
1. Introduction 1146
2. Experimental section 1147
3. Results and discussion 1148
References 1149
CH$Chapter 239 Zeolite catalysed dehydration of alcohol to linear ether 1150
Abstract 1150
1. Introduction 1150
2. Experimental 1151
3. Results and dicussion 1151
4. Conclusion 1153
Acknowledgments 1153
References 1153
CH$Chapter 240 Dehydroalkylation of toluene with ethane on zeolites MCM-22 and ZSM-5 1154
Abstract 1154
1. Introduction 1154
2. Experimental Section 1154
3. Results and Discussion 1155
Acknowledgements 1157
References 1157
CH$Chapter 241 N2O decomposition over (µ-oxo)(µ-hydroxo)di-iron complex supported by ZSM-5 zeolite: effect of cluster size on DFT energy profile 1158
Abstract 1158
1. Introduction 1158
2. Computational methods 1158
3. Results and discussion 1159
4. Conclusion 1161
Acknowledgements 1161
References 1161
CH$Chapter 242 Oxidative dehydrogenation of propane over Fe- BEA catalysts 1162
Abstract 1162
1. Introduction 1162
2. Experimental 1163
3. Results and discussion 1163
4. Conclusion 1165
Acknowledgement 1165
References 1165
CH$Chapter 243 Charge transfer during diphenyl-polyene sorption in acidic ZSM-5 zeolite: a primordial reaction for catalysis processes 1166
Abstract 1166
1. Introduction 1166
2. Experimental section 1166
3. Results 1167
4. Conclusion 1169
References 1169
CH$Chapter 244 n-Hexane hydroisomerisation over bifunctional Pt/MCM-22 catalysts. Influence of the mode of Pt introduction 1170
Abstract 1170
1. Introduction 1170
2. Experimental 1171
3. Results and discussion 1171
4. Conclusion 1173
References 1173
CH$Chapter 245 Ni-MCM-36 and Ni-MCM-22 catalysts for the ethylene oligomerization 1174
Abstract 1174
1. Introduction 1174
2. Experimental 1174
3. Results and discussion 1175
References 1177
CH$Chapter 246 Zeolite-chitosan composites: promising materials for catalysis and separation 1178
Abstract 1178
1. Introduction 1178
2. Experimental 1178
3. Results and discussion 1179
References 1181
CH$Chapter 247 Catalytic activity of MAPO-36 and ion-exchanged MAPO-36 in Beckmann rearrangement 1182
Abstract 1182
1. Introduction 1182
2. Experimental 1182
3. Results and Discussion 1183
4. Conclusion 1185
Acknowledgements 1185
References 1185
CH$Chapter 248 Ammoxidation of propane over Fe-zeolites: effect of reaction variables, catalyst composition and catalyst structure 1186
Abstract 1186
1. Introduction 1186
2. Experimental 1186
3. Results and Discussion 1187
4. Conclusion 1189
Acknowledgement 1189
References 1189
CH$Chapter 249 Pulse reaction studies of gallium modified H-ZSM5 catalysts with propane 1190
Abstract 1190
1. Introduction 1190
2. Experimental 1191
3. Results 1191
4. Conclusion 1193
Acknowledgments 1193
References 1193
CH$Chapter 250 Hydrodearomatization of sulphur and nitrogen containing gas oils on bimetallic catalysts 1194
Abstract 1194
1. Introduction 1194
2. Experimental 1194
3. Results and discussion 1195
References 1197
CH$Chapter 251 Effect of the preparative variables on the texture, structure and activity of the Pd-ZSM-5 catalysts 1198
Abstract 1198
1. Introduction 1198
2. Experimental 1198
3. Results and discussion 1199
4. Conclusion 1201
References 1201
CH$Chapter 252 Hydroisomerization of n-octane over Pt-containing micro/mesoporous molecular sieves 1202
Abstract 1202
1. Introduction 1202
2. Experimental 1203
3. Results and discussion 1203
4. Conclusion 1205
Acknowledgment 1205
References 1205
CH$Chapter 253 Zeolite based ceramics as catalysts for wet hydrogen peroxide catalytic oxidation of phenol and poly-phenols 1206
Abstract 1206
1. Introduction 1206
2. Experimental 1206
3. Results and Discussion 1207
4. Conclusion 1209
References 1209
CH$Chapter 254 Dehydrogenation of ethane over vanadium, cobalt and nickel based catalysts 1210
Abstract 1210
1. Introduction 1210
2. Experimental 1210
3. Results and discussion 1211
4. Conclusion 1213
Acknowledgement 1213
References 1213
CH$Chapter 255 Influence of zeolite structure on ethylbenzene transformation 1214
Abstract 1214
1. Introduction 1214
2. Experimental 1214
3. Results and discussion 1215
4. Conclusion 1217
References 1217
CH$Chapter 256 Synergism of acidic zeolite and Pt/zeolite in aromatics transalkylation 1218
Abstract 1218
1. Introduction 1218
2. Experimental 1218
3. Results and Discussion 1219
4. Conclusion 1221
Acknowledgement 1221
References 1221
CH$Chapter 257 Microwave synthesized mesoporous Tin MFI as efficient catalyst for Baeyer-Villiger Oxidation of cyclic ketones 1222
Abstract 1222
1. Introduction 1222
2. Experimental 1223
3. Results and Discussion 1223
4. Conclusion 1225
Acknowledgments 1225
References 1225
CH$Chapter 258 Reactive distillation of glycerol in the presence of different porous type catalysts 1226
Abstract 1226
1. Introduction 1226
2. Experimental 1227
3. Results and discussion 1227
Acknowledgement 1229
References 1229
CH$Chapter 259 Zeolite-coated ceramic foams for VOCs removal 1230
Abstract 1230
1. Introduction 1230
2. Experimental 1231
3. Results and Discussion 1232
Conclusion 1233
Acknowledgements 1233
References 1233
CH$Chapter 260 Acylation of cyclohexene derivatives over zeolites 1234
Abstract 1234
1. Introduction 1234
2. Experimental 1234
3. Results and discussion 1235
4. Conclusion 1237
Acknowledgement 1237
References 1237
CH$Chapter 261 Selective oxidation of benzene to phenol over H-ZSM-5 catalyst: role of mesoporosity on the catalyst deactivation 1238
Abstract 1238
1. Introduction 1238
2. Experimental 1238
3. Results and discussion 1239
4. Conclusion 1241
References 1241
CH$Chapter 262 Transformation of a natural zeolite into solid catalyst for methanol to dimethyl ether reaction and kinetics modeling 1242
Abstract 1242
1. Introduction 1242
2. Experimental 1242
3. Results and discussion 1243
4. Conclusion 1245
References 1245
CH$Chapter 263 Comparative study on conversion of C8 and C16 paraffins on ZSM-5 catalyst 1246
Abstract 1246
1. Introduction 1246
2. Experimental 1246
3. Results and Discussion 1246
References 1249
CH$Chapter 264 Toluene and 1,2,4–trimethylbenzene conversion on [Al]MCM-22 zeolite partially substituted by boron 1250
Abstract 1250
1. Introduction 1250
2. Experimental 1251
3. Results and discussion 1251
4. Conclusion 1253
Acknowledgement 1253
CH$Chapter 265 Effect of Cu-loading and structure on the activity of Cu-exchanged zeolites for NH3-SCR 1254
Abstract 1254
1. Introduction 1254
2. Experimental Section 1255
3. Results and Discussion 1255
4. Conclusion 1257
References 1257
CH$Chapter 266 Development of modified mordenite-zirconia catalysts active at low-temperature in n-butane isomerization 1258
Abstract 1258
1. Introduction 1258
2. Experimental 1258
3. Results and discussion 1259
4. Conclusion 1261
References 1261
CH$Chapter 267 Hydrotreatment of diesel feedstock over Pt-SAPO-31 catalyst: from lab to pilot scale 1262
Abstract 1262
1. Introduction 1262
2. Experimental 1262
3. Results and Discussion 1262
References 1265
CH$Chapter 268 Desilication of ZSM-12 and MCM-22 type zeolites and their performance in isomerization of a-pinene 1266
Abstract 1266
1. Introduction 1266
2. Experimental 1267
3. Results and discussion 1267
4. Conclusion 1269
References 1269
CH$Chapter 269 Improved performance of naphtha reforming process by the use of metal zeolite composite catalysts 1270
Abstract 1270
1. Introduction 1270
2. Experimental Section 1270
3. Results and Discussion 1271
4. Conclusion 1273
References 1273
CH$Chapter 270 Acidic, physico-chemical and catalytic properties of MCM-41 containing transitions metals 1274
Abstract 1274
1. Introduction 1274
2. Experimental Section 1274
3. Results and Discussion 1275
4. Conclusion 1277
References 1277
CH$Chapter 271 A comparison of the reaction mechanism in acid- and in basic-catalysed gas-phase methylation of phenol 1278
Abstract 1278
1. Introduction 1278
2. Experimental 1279
3. Results and Discussion 1279
References 1281
CH$Chapter 272 Alkaline ions modified Fe-SBA-3 as catalysts for propene epoxidation in the presence of N2O 1282
Abstract 1282
1. Introduction 1282
2. Experimental 1283
3. Results and discussion 1283
4. Conclusions 1285
Acknowledgements 1285
References 1285
CH$Chapter 273 A Comparison study of NiW and NiPW hydrodesulfurization catalysts supported on SBA-15 and alumina 1286
Abstract 1286
1. Introduction 1286
2. Experimental 1286
3. Results and Discussion 1287
4. Conclusion 1289
Acknowledgements 1289
References 1289
CH$Chapter 274 Photocatalytic degradation on Ni loaded Ti-containing mesoporous silica prepared by a photo-assisted deposition (PAD) method 1290
Abstract 1290
1. Introduction 1290
2. Experimental 1291
3. Results and discussion 1291
4. Conclusion 1293
References 1293
CH$Chapter 275 Al-MCM-41 and Pt/H3PW12O40/Al-MCM-41: structure characterization and catalytic properties 1294
1. Introduction 1294
2. Experimental section 1294
3. Results and discussion 1295
4. Conclusion 1297
Acknowledgments 1297
References 1297
CH$Chapter 276 Vanadium supported on sulfated Ti-pillared clay catalysts: Effect of the amount of vanadium on SCR-NO by NH3 activity 1298
Abstract 1298
1. Introduction 1298
2. Experimental 1298
3. Results and discussion 1299
4. Conclusion 1301
References 1301
CH$Chapter 277 Vanadium incorporated into three dimensional KIT-6: optimization of the synthesis procedure and its catalytic applications 1302
Abstract 1302
1. Introduction 1302
2. Experimental 1302
3. Results and discussion 1303
4. Conclusion 1305
Acknowledgement 1305
References 1305
CH$Chapter 278 Short channeled amino functionalized SBA-15 catalysts for the liquid phase reaction between 2-hydroxyacetophenone and benzaldehyde 1306
Abstract 1306
1. Introduction 1306
2. Experimental 1307
3. Results and Discussion 1307
4. Conclusion 1309
Acknowledgments 1309
References 1309
CH$Chapter 279 Synthesis and characterization of metal-benzene-tricarboxylate oxidation catalysts 1310
Abstract 1310
1. Introduction 1310
2. Experimental 1310
3. Results and discussion 1311
References 1313
CH$Chapter 280 Gas phase hydrogenation of benzaldehyde over supported copper catalysts. Effect of copper loading 1314
Abstract 1314
1. Introduction 1314
2. Experimental 1314
3. Results and discussion 1315
4. Conclusion 1317
References 1317
CH$Chapter 281 Heterogeneous catalysts containing basic and palladium centres for Heck reaction 1318
Abstract 1318
1. Introduction 1318
2. Experimental 1319
3. Results and Discussion 1319
4. Conclusion 1321
Acknowledgments 1321
References 1321
CH$Chapter 282 Study of the benzylation of aromatics over Mg-Cr-hydrotalcite catalysts 1322
Abstract 1322
1. Introduction 1322
2. Experimental 1322
3. Results and discussion 1323
Conclusion 1325
References 1325
CH$Chapter 283 Synthesis of nano-sized Pt metal particle on Ti-containing mesoporous silica and efficient catalytic application for hydrogenation of 1326
Abstract 1326
1. Introduction 1326
2. Experimental 1327
3. Results and Discussion 1327
4. Conclusion 1329
Acknowledgment 1329
References 1329
CH$Chapter 284 Effect of the nature and the distribution of vanadium Species on the catalytic behavior of vanadium-based silica catalysts 1330
Abstract 1330
1. Introduction 1330
2. Experimental 1330
3. Results and discussion 1331
4. Conclusion 1333
Acknowledgement 1333
References 1333
CH$Chapter 285 Alkylation of naphthalene over mesoporous metal substituted SBA-1 catalysts 1334
Abstract 1334
1. Introduction 1334
2. Experimental 1335
3. Results and discussion 1335
References 1337
CH$Chapter 286 Synthesis, characterization and catalytic properties of nanostructured porous carbon 1338
Abstract 1338
1. Introduction 1338
2. Experimental Section 1338
3. Results and Discussion 1339
References 1341
CH$Chapter 287 Benzoylation of anisole catalysed by Ga/SBA-15 supported on ß-SiC 1342
Abstract 1342
1. Introduction 1342
2. Experimental 1343
3. Results and Discussion 1343
4. Conclusion 1345
References 1345
CH$Chapter 288 Preparation, characterization and catalytic application of Fe- and Fe/Al-pillared clays in the catalytic wet peroxide oxidation of 1346
Abstract 1346
1. Introduction 1346
2. Experimental 1346
3. Results and discussion 1347
4. Conclusion 1349
Acknowledgements 1349
References 1349
CH$Chapter 289 Glucose hydrogenation over Ru nanoparticles embedded in templated porous carbon 1350
Abstract 1350
1. Introduction 1350
2. Experimental 1350
3. Results and Discussion 1351
4. Conclusion 1353
References 1353
CH$Chapter 290 Mesoporous silica containing sulfonic acid groups as catalysts for the alpha-pinene methoxylation 1354
Abstract 1354
1. Introduction 1354
2. Experimental 1355
3. Results and discussion 1355
4. Conclusion 1357
References 1357
CH$Chapter 291 Effects of the treatment and the mesoporosity of mesostructured TiO2 impregnated with noble metal for VOCs oxidation 1358
Abstract 1358
1. Introduction 1358
2. Experimental 1358
3. Results and Discussion 1359
4. Conclusion 1361
References 1361
CH$Chapter 292 Challenges in biocatalysis: immobilization of pepsin in mesoporous silicates 1362
Abstract 1362
1. Introduction 1362
2. Experimental 1362
3. Results and Discussion 1363
4. Conclusion 1365
References 1365
CH$Chapter 293 Al-, Ga- and AlGa-materials as catalysts for the N-methylation of aniline 1366
Abstract 1366
1. Introduction 1366
2. Experimental 1366
3. Results and discussion 1367
References 1369
CH$Chapter 294 Steam reforming of methane on nickel aluminate defined structures with high Al/Ni ratio 1370
Abstract 1370
1. Introduction 1370
2. Experimental 1371
3. Results and discussion 1371
4. Conclusion 1373
References 1373
CH$Chapter 295 Catalytic deoxygenation of stearic acid over palladium supported on acid modified mesoporous silica 1374
Abstract 1374
1. Introduction 1374
2. Experimental Section 1374
3. Results and Discussion 1375
3. Conclusion 1377
References 1377
CH$Chapter 296 Mesoporous materials as supports of Rh catalysts. Synthesis, characterization and catalytic application 1378
Abstract 1378
1. Introduction 1378
2. Experimental 1379
3. Results and discussion 1379
4. Conclusion 1381
Acknowledgments 1381
References 1381
CH$Chapter 297 Sulfonated mesoporous carbons as a solid sulfonic acid catalyst 1382
Abstract 1382
1. Introduction 1382
2. Experiment 1382
3. Results and discussion 1383
4. Conclusion 1385
References 1385
CH$Chapter 298 Development of new hybrid TiO2/SBA-15 mesoporous molecular sieves and their use as supports for deep hydrodesulfurization NiMo catalysts 1386
Abstract 1386
1. Introduction 1386
2. Experimental 1387
3. Results and Discussion 1387
4. Conclusions 1389
Acknowledgements 1389
References 1389
CH$Chapter 299 Stability of copper supported pillared clay catalysts during oxidation of model pollutant tyrosol in batch and continuous reactors 1390
Abstract 1390
1. Introduction 1390
2. Experimental 1391
3. Results and discussion 1391
4. Conclusion 1393
References 1393
IDX$Author Index 1394
Solving complex zeolite structures - how far can we go?
Lynne B. McCusker; Christian Baerlocher Laboratory of Crystallography, ETH Zurich, CH-8093 Zurich, Switzerland
Abstract
As a result of impressive methodological advances in recent years, the determination of a crystal structure from powder diffraction data is no longer a rarity. However, some zeolite structures remain intractable. To address such problems, the powder diffraction data can be supplemented with information from other sources. Both the Focus and the powder charge-flipping (pCF) algorithms have been adapted to accommodate such data combinations, and this has allowed the complex structures of TNU-9 (24 Si atoms), IM- 5 (24 Si atoms) and SSZ-74 (23 Si atoms) to be solved. The key in all cases was the combination of high-resolution powder diffraction data with information derived from high-resolution transmission electron microscopy (HRTEM) images. Tests on TNU-9 and IM-5 showed that the information in an HRTEM image can also be used in combination with molecular modeling to generate a framework structure model. Details of these structure determinations and the implications for non-zeolite porous materials are discussed.
Keywords
structure analysis
powder diffraction
TNU-9
IM-5
SSZ-74
1 Introduction
In the last two years, three extremely complex zeolite structures have been solved by combining powder diffraction and electron microscopy data. These three high-silica zeolites, TNU-9 [1], IM-5 [2] and SSZ-74 [3], constitute a synthesis series, in which the structure directing agent (SDA) differs only in the length of the methylene chain between two N-methylpyrrolidinium rings. TNU-9 is synthesized with 1,4-bis(N- methyl-pyrrolidinium)-butane [4], while IM-5 and SSZ-74 are synthesized with the pentane[5]and hexane [6]analogs, respectively. All are polycrystalline, and all resisted solution from high-resolution powder diffraction data alone.
The problem with a polycrystalline sample is that all crystallite orientations are present simultaneously, so the resulting diffraction pattern is a superposition of millions of weak, randomly oriented single-crystal patterns. Consequently, information about the relative spatial orientations of the reflections is lost, and only the 2θ value (d-spacing) is retained. Reflections with similar d-spacings, therefore, overlap, and their individual reflection intensities cannot be measured. A variety of approaches to structure determination that take this intensity ambiguity into consideration, or circumvent it entirely, have been developed over the years [7,8], and it is now possible to solve moderately complex structures from powder diffraction data in an almost routine manner. However, zeolites continue to represent a challenge to these methods.
In recent years, the Focus algorithm [9], which can be viewed as an automated zeolite model-building procedure that uses the powder diffraction data to create the models, has been applied successfully in a number of cases (e.g. EMM-3 [10], ITQ-27 [11], MCM-68 [12], IST-1 [13] and SSZ-60 [14]). The method has been found to work well for up to twelve tetrahedrally coordinated atoms (T atoms) in the asymmetric unit [15]. One of the interesting features of this approach is that it works in both real (model-building) and reciprocal (diffraction) space. This means that information can be added in either realm quite easily, so possibilities for extending the limits of the method are open. Indeed, simply by imposing a structure envelope, which defines the regions of the unit cell in which framework atoms are unlikely to be present (e.g. within the pores), the Focus algorithm can be made more efficient [16].
In 2004, Oszlányi and Sütőintroduced a new structure-solution algorithm for single-crystal data called charge flipping [17,18]. This deceptively simple electron density modification algorithm was adapted to work with powder diffraction data by two independent research groups [19,20], and its potential has been demonstrated on several complex examples [20]. Like Focus, it works in both real and reciprocal space, so supplementary information can be added easily. In contrast to Focus, which is zeolite specific, powder charge flipping (pCF) is generally applicable and works equally well with organic or inorganic structures. Furthermore, no assumptions regarding symmetry are made, so the issue of which space group to use does not arise.
Information to supplement the powder diffraction dataused by the Focus and pCF methods can be derived from electron diffraction data and/or from high-resolution transmission electron microscopy (HRTEM) images. By introducing such information into eitheralgorithm, much more complex structural problems can be addressed. Tests on TNU-9 and IM-5 showed that the information in an HRTEM image can also be used in combination with molecular modeling to generate the correct framework structure model [21].
In the following sections, the basic concepts of Focus and pCF are explained, the relevant characteristics of electron microscopy are outlined, and the combination of powder diffraction with electron microscopy for structure solution is described using the three zeolite structure solutions as examples.
2 The Focus algorithm
Focus is a zeolite-specific structure-solution program that uses chemical information to compensate for the ambiguities in the reflection intensities extracted from a powder diffraction pattern (Figure 1). Structure factor amplitudes (|Fhkl|) are calculated from the extracted intensities, and are then assigned starting (random)phases (ϕhkl) to generate a (random) electron density map (ρxyz) using equation (1).
xyz=∑hklFhkle−ϕhkl
(1)
The program then uses one of two methods to interpret the map and to calculate a (partial) model. The peaks in the electron density map are interpreted either (1) conventionally according to peak height and expected chemical composition (i.e. highest peaks are assigned to the heaviest scatterers), or (2) according to the largest framework fragment that can be found (even if some strong peaks are ignored and some weak ones used). Alternating between the two interpretation modes has proven to be the most effective approach. Whichever method is applied, the resulting (partial) model is used to calculate a new set of structure factors using equation (2),
hkl=∑nfne−2πihkn+kyn+lzn=Fhkleiφhkl
(2)
Where fn is the scattering factor for atom n and xyzare its coordinates in the unit cell. The phases of these structure factors are then combined with the measured amplitudes to generate a new electron density map. This cycle is repeated until either the phases have converged or a preset number of cycles has been reached. At that point, a new set of random phases is generated and the cycle is repeated.
Each time an electron density map is generated, the program conducts an exhaustive search for a 3-dimensional, 4-connected framework structure. If one is found, it is classified and written to a file. When a sufficient number of frameworks have been found, a histogram is generated. In general, the framework found most frequently (from different starting phase sets) will be the correct one. For structures with 1-12 T atoms in the asymmetric unit, this usually takes less than an hour.
3 Powder charge flipping
3.1 Concept
The original charge-flipping algorithm for single-crystal data starts in much the same way as does Focus (Figure 2, left). That is, random phases are assigned to the set of structure factor amplitudes derived from the diffraction intensities, and an electron density map is generated. Then the signs of all electron density points below some user-defined threshold δ (a small positive number) are reversed ("flipped") to produce a perturbed electron density map. In effect, all negative electron densities, which are not physically meaningful, are made positive. From thismap, a new set of structure factor amplitudes (|Ghkl|) and phases are calculated, and the new phases are combined with the measured amplitudes (|Fhkl|) to produce a new electron density map. This cycle is repeated until the calculated structure factor amplitudes match the measured ones or until a preset number of cycles has been reached.
3.2 Adaptation to accommodate powder diffraction data
To accommodate powder diffraction data, something had to be done about the intensities of overlapping reflections. In the implementation by Wu et al. [19], the ratios of...
Erscheint lt. Verlag | 19.8.2008 |
---|---|
Sprache | englisch |
Themenwelt | Naturwissenschaften ► Chemie ► Technische Chemie |
Naturwissenschaften ► Geowissenschaften ► Mineralogie / Paläontologie | |
Technik ► Umwelttechnik / Biotechnologie | |
ISBN-10 | 0-08-095161-9 / 0080951619 |
ISBN-13 | 978-0-08-095161-4 / 9780080951614 |
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