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Author : Carole Elizabeth Brown
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (714 download)
Download or read book Studies of Silica Supported Metal Catalysts written by Carole Elizabeth Brown and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. Maggi
Publisher : Elsevier
ISBN 13 : 0080539459
Total Pages : 1007 pages
Book Rating : 4.0/5 (85 download)
Download or read book Preparation of Catalysts VII written by R. Maggi and published by Elsevier. This book was released on 1998-08-17 with total page 1007 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the VIIth International Symposium on the Scientific Bases for the Preparation of Heterogeneous Catalysts, are in line with the general scope of this series of events. Emphasis in all Symposia has been on the scientific aspects of the preparation of new and industrial catalysts, or on new methods of preparation, rather than on the catalytic reactions in which such solids are ultimately used. In the present context, the catalytic event itself has only been considered as another, though often decisive, method of catalyst characterization.
Author : John Regalbuto
Publisher : CRC Press
ISBN 13 : 1420006509
Total Pages : 490 pages
Book Rating : 4.4/5 (2 download)
Download or read book Catalyst Preparation written by John Regalbuto and published by CRC Press. This book was released on 2016-04-19 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text explores the optimization of catalytic materials through traditional and novel methods of catalyst preparation, characterization, and monitoring for oxides, supported metals, zeolites, and heteropolyacids. It focuses on the synthesis of bulk materials and of heterogeneous materials, particularly at the nanoscale. The final chapters examine pretreatment, drying, finishing effects, and future applications involving catalyst preparation and the technological advances necessary for continued progress. Topics also include heat and mass transfer limitations, computation methods for predicting properties, and catalyst monitoring on laboratory and industrial scales.
Download or read book Studies of Immobilized Homogeneous Metal Catalysts on Silica Supports written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The tethered, chiral, chelating diphosphine rhodium complex, which catalyzes the enantioselective hydrogenation of methyl-[alpha]-acetamidocinnamate (MAC), has the illustrated structure as established by[sup 31]P NMR and IR studies. Spectral and catalytic investigations also suggest that the mechanism of action of the tethered complex is the same as that of the untethered complex in solution. The rhodium complexes, [Rh(COD)H][sub 4], [Rh(COD)[sub 2]][sup+]BF[sub 4][sup -], [Rh(COD)Cl][sub 2], and RhCl[sub 3][center-dot] 3H[sub 2]O, adsorbed on SiO[sub 2] are optimally activated for toluene hydrogenation by pretreatment with H[sub 2] at 200 C. The same complexes on Pd-SiO[sub 2] are equally active without pretreatments. The active species in all cases is rhodium metal. The catalysts were characterized by XPS, TEM, DRIFTS, and mercury poisoning experiments. Rhodium on silica catalyzes the hydrogenation of fluorobenzene to produce predominantly fluorocyclohexane in heptane and 1,2-dichloroethane solvents. In heptane/methanol and heptane/water solvents, hydrodefluorination to benzene and subsequent hydrogenation to cyclohexane occurs exclusively. Benzene inhibits the hydrodefluorination of fluorobenzene. In DCE or heptane solvents, fluorocyclohexane reacts with hydrogen fluoride to form cyclohexene. Reaction conditions can be chosen to selectively yield fluorocyclohexane, cyclohexene, benzene, or cyclohexane. The oxorhenium(V) dithiolate catalyst[-S(CH[sub 2])[sub 3]s-]Re(O)(Me)(PPh[sub 3]) was modified by linking it to a tether that could be attached to a silica support. Spectroscopic investigation and catalytic oxidation reactivity showed the heterogenized catalyst's structure and reactivity to be similar to its homogeneous analog. However, the immobilized catalyst offered additional advantages of recyclability, extended stability, and increased resistance to deactivation.
Author : F.R. Hartley
Publisher : Springer Science & Business Media
ISBN 13 : 9400952473
Total Pages : 331 pages
Book Rating : 4.4/5 (9 download)
Download or read book Supported Metal Complexes written by F.R. Hartley and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now IS years since the first patents in polymer supported metal complex catalysts were taken out. In the early days ion-exchange resins were used to support ionic metal complexes. Soon covalent links were developed, and after an initially slow start there was a period of explosive growth in the mid to late 1970s during which virtually every homogeneous metal complex catalyst ever reported was also studied bound to a support. Both polymers and inorganic oxides were studied as supports, although the great preponderance of workers studied polymeric supports, and of these polystyrene was by far the commonest used. This period served to show that by very careful design polymer-supported metal complex catalysts could have specific advantages over homogeneous metal complex catalysts. However the subject was a complicated one. Merely immobilising a successful metal complex catalyst to a functionalised support rarely yielded other than an inferior version of the catalyst. Amongst the many discouraging results of the 1970s, there were more than enough results that were sufficiently encouraging to demonstrate that, by careful design, supported metal complex catalysts could be prepared in which both the metal complex and the support combined together to produce an active catalyst which, due to the combination of support and complex, had advantages of activity, selectivity and specificity not found in homogeneous catalysts. Thus a new generation of catalysts was being developed.
Author : Keith James Stanger
Publisher :
ISBN 13 :
Total Pages : 322 pages
Book Rating : 4.:/5 (543 download)
Download or read book Studies of Immobilized Homogeneous Metal Catalysts on Silica Supports written by Keith James Stanger and published by . This book was released on 2003 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rhodium complexes of the chiral, chelating diphosphine (2S,4S)-4-(diphenylphosphino)-2-(diphenylphosphinomethyl)pyrrolidine tethered on silica were characterized by 31P NMR and IR. The tethered complex catalyzes the enantioselective hydrogenation of methyl-[alpha]-acetamidocinnamate (MAC). Spectral and catalytic investigations indicate that the tethered complex reacts by the same mechanism as the untethered complex in solution. The rhodium complexes, [Rh(COD)H]4, [Rh(COD)2]BF4−, [Rh(COD)Cl]2, and RhCl3·3H2O, adsorbed on SiO2 are optimally activated for toluene hydrogenation by pretreatment with H2 at 200°C. The same complexes on Pd-SiO2 are equally active without pretreatments. The active species in all cases is rhodium metal. The catalysts were characterized by XPS, TEM, DRIFTS, and mercury poisoning experiments. Rhodium on silica catalyzes the hydrogenation of fluorobenzene to produce predominately fluorocyclohexane in heptane and 1,2-dichloroethane (DCE) solvents. In heptane/methanol and heptane/water solvents, hydrodefluorination to benzene and subsequent hydrogenation to cyclohexane occurs exclusively. Benzene inhibits the hydrodefluorination of fluorobenzene. In DCE or heptane solvents, fluorocyclohexane reacts with hydrogen fluoride to form cyclohexene. Reaction conditions can be chosen to selectively yield fluorocyclohexane, cyclohexene, benzene, or cyclohexane. The oxorhenium(V) dithiolate catalyst [-S(CH2)3S-]Re(O)(Me)(PPh3) was modified by linking it to a tether that could be attached to a silica support. Spectroscopic investigation and catalytic oxidation reactivity showed the heterogenized catalyst's structure and reactivity to be similar to its homogeneous analog. However, the immobilized catalyst offered additional advantages of recycleability, extended stability, and increased resistance to deactivation.
Author : E. Gaigneaux
Publisher : Elsevier
ISBN 13 : 0080540740
Total Pages : 1150 pages
Book Rating : 4.0/5 (85 download)
Download or read book Scientific Bases for the Preparation of Heterogeneous Catalysts written by E. Gaigneaux and published by Elsevier. This book was released on 2002-08-29 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has become a tradition that every four years, the Université Catholique de Louvain and the Katholieke Universiteit Leuven jointly organize a symposium devoted to the scientific bases for the preparation of heterogeneous catalysts. These meetings bring together researchers from academia and industry and offer a forum for discussions on the chemistry involved in the preparation of industrial heterogeneous catalysts. This volume containing the Proceedings of the 8th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts consists of papers summarizing most of the 139 oral communications and posters selected by the international scientific committee, composed of 27 experts in the field of catalyst preparation, holding an industrial or academia appointment. The contributions focus on the aspects of catalyst preparation. The main topics are: new approaches in catalyst preparation; advanced preparations of nanoporous and mesoporous catalysts; catalysts preparation for special performances and purposes; catalysts for environmental purposes; and molecular catalysis. Emphasis is put on the role that catalysis can play as an essential element of sustainable development.
Author : James Arthur Anderson
Publisher : World Scientific
ISBN 13 : 184816677X
Total Pages : 581 pages
Book Rating : 4.8/5 (481 download)
Download or read book Supported Metals in Catalysis written by James Arthur Anderson and published by World Scientific. This book was released on 2012 with total page 581 pages. Available in PDF, EPUB and Kindle. Book excerpt: With contributions from experts in supported metal catalysis, from both the industry and academia, this book presents the latest developments in characterization and application of supported metals in heterogeneous catalysis. In addition to a thorough and updated coverage of the traditional aspects of heterogeneous catalysis such as preparation, characterization and use in well-established technologies such as Naphtha reforming, the book also includes emerging areas where supported metal catalysis will make significant contributions in future developments, such as fuel cells and fine chemicals synthesis. The second edition of Supported Metals in Catalysis comes complete with new and updated chapters containing important summaries of research in a rapidly evolving field. Very few other books deal with this highly pertinent subject matter, and as such, it is a must-have for anyone working in the field of heterogeneous catalysis.
Author : R. T. K. Baker
Publisher :
ISBN 13 :
Total Pages : 258 pages
Book Rating : 4.3/5 (91 download)
Download or read book Strong Metal-support Interactions written by R. T. K. Baker and published by . This book was released on 1986 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Martin James Heal
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (859 download)
Download or read book Infra-red Studies of Carbon Monoxide and Hydrogen Absorbed on Silica Supported Metal Catalysts written by Martin James Heal and published by . This book was released on 1976* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : H. G. A. Lutfi
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (643 download)
Download or read book Synthesis of Silica Supported Asymmetric Metal Catalysts written by H. G. A. Lutfi and published by . This book was released on 1990 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Marita Niemelä
Publisher :
ISBN 13 : 9789513850562
Total Pages : 44 pages
Book Rating : 4.8/5 (55 download)
Download or read book Reactions of Synthesis Gas on Silica Supported Transition Metal Catalysts written by Marita Niemelä and published by . This book was released on 1997 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Linze Du
Publisher :
ISBN 13 :
Total Pages : 119 pages
Book Rating : 4.5/5 (699 download)
Download or read book Surface Science and Catalytic Studies of Mixed Oxide-supported Metal Catalysts for Energy Production written by Linze Du and published by . This book was released on 2020 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James J Spivey
Publisher : Royal Society of Chemistry
ISBN 13 : 184755329X
Total Pages : 361 pages
Book Rating : 4.8/5 (475 download)
Download or read book Catalysis written by James J Spivey and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is an increasing challenge for chemical industry and research institutions to find cost-efficient and environmentally sound methods of converting natural resources into fuels chemicals and energy. Catalysts are essential to these processes and the Catalysis Specialist Periodical Report series serves to highlight major developments in this area. This series provides systematic and detailed reviews of topics of interest to scientists and engineers in the catalysis field. The coverage includes all major areas of heterogeneous and homogeneous catalysis and also specific applications of catalysis such as NOx control kinetics and experimental techniques such as microcalorimetry. Each chapter is compiled by recognised experts within their specialist fields and provides a summary of the current literature. This series will be of interest to all those in academia and industry who need an up-to-date critical analysis and summary of catalysis research and applications. Catalysis will be of interest to anyone working in academia and industry that needs an up-to-date critical analysis and summary of catalysis research and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading experts in their specialist fields, this series is designed to help the chemistry community keep current with the latest developments in their field. Each volume in the series is published either annually or biennially and is a superb reference point for researchers. www.rsc.org/spr
Author : Sophie Hermans
Publisher : Royal Society of Chemistry
ISBN 13 : 1849738297
Total Pages : 318 pages
Book Rating : 4.8/5 (497 download)
Download or read book Atomically-Precise Methods for Synthesis of Solid Catalysts written by Sophie Hermans and published by Royal Society of Chemistry. This book was released on 2015 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: With techniques bridging the gap between surface science and heterogeneous catalysis the book presents a tool-kit for anyone wishing to prepare and define solid catalysts.
Author : Kent Coulter
Publisher :
ISBN 13 :
Total Pages : 390 pages
Book Rating : 4.:/5 (333 download)
Download or read book Surface Science and Kinetic Studies of Model Oxide and Oxide- Supported-metal Catalysts written by Kent Coulter and published by . This book was released on 1993 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ray Hoff
Publisher : John Wiley & Sons
ISBN 13 : 1119242215
Total Pages : 895 pages
Book Rating : 4.1/5 (192 download)
Download or read book Handbook of Transition Metal Polymerization Catalysts written by Ray Hoff and published by John Wiley & Sons. This book was released on 2018-04-20 with total page 895 pages. Available in PDF, EPUB and Kindle. Book excerpt: Including recent advances and historically important catalysts, this book overviews methods for developing and applying polymerization catalysts – dealing with polymerization catalysts that afford commercially acceptable high yields of polymer with respect to catalyst mass or productivity. • Contains the valuable data needed to reproduce syntheses or use the catalyst for new applications • Offers a guide to the design and synthesis of catalysts, and their applications in synthesis of polymers • Includes the information essential for choosing the appropriate reactions to maximize yield of polymer synthesized • Presents new chapters on vanadium catalysts, Ziegler catalysts, laboratory homopolymerization, and copolymerization
