Metal-support Bonds in Supported Metal Catalysts

Metal-support Bonds in Supported Metal Catalysts PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 12

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Book Description
This research project, now in its third year, is an investigation of the synthesis, structure, and bonding of a family of metal complexes, clusters, and particles on the surfaces of high-area metal oxide supports. The focus is the structure of the metal-support interface. Surface species have been prepared by synthetic organometallic chemistry on the support surfaces. The organometallic precursors are complexes of W, Re, Os, Ir, and Pt, including W(CO)6, HRe(CO)5, Re2(CO)10, H3Re3(CO)12, H2Os(CO)4, Ir([eta]3-C3H5)3, and Pt([eta]3-C3H5)2. The supports are primarily MgO and [gamma]-Al2O3. The surface species have been characterized by infrared and EXAFS spectroscopies, among other techniques. 7 refs., 5 figs., 4 tabs.

Metal-support Bonds in Supported Metal Catalysts

Metal-support Bonds in Supported Metal Catalysts PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 12

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Book Description
This research project, now in its third year, is an investigation of the synthesis, structure, and bonding of a family of metal complexes, clusters, and particles on the surfaces of high-area metal oxide supports. The focus is the structure of the metal-support interface. Surface species have been prepared by synthetic organometallic chemistry on the support surfaces. The organometallic precursors are complexes of W, Re, Os, Ir, and Pt, including W(CO)6, HRe(CO)5, Re2(CO)10, H3Re3(CO)12, H2Os(CO)4, Ir([eta]3-C3H5)3, and Pt([eta]3-C3H5)2. The supports are primarily MgO and [gamma]-Al2O3. The surface species have been characterized by infrared and EXAFS spectroscopies, among other techniques. 7 refs., 5 figs., 4 tabs.

Supported Metal Complexes

Supported Metal Complexes PDF Author: F.R. Hartley
Publisher: Springer Science & Business Media
ISBN: 9400952473
Category : Science
Languages : en
Pages : 331

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Book Description
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.

Supported Metal Single Atom Catalysis

Supported Metal Single Atom Catalysis PDF Author: Philippe Serp
Publisher: John Wiley & Sons
ISBN: 3527830170
Category : Technology & Engineering
Languages : en
Pages : 912

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Book Description
b”Supported Metal Single Atom CatalysisCovers all key aspects of supported metal single atom catalysts, an invaluable resource for academic researchers and industry professionals alike Single atom catalysis is one of the most innovative and dynamic research areas in catalysis science. Supported metal catalysts are used extensively across the chemical industry, ranging from fine and bulk chemical production to petrochemicals. Single atom catalysts (SACs) combine the advantages of both homogeneous and heterogeneous catalysts such as catalyst stability, activity, and high dispersion of the active phase. Supported Metal Single Atom Catalysis provides an authoritative and up-to-date overview of the emerging field, covering the synthesis, preparation, characterization, modeling, and applications of SACs. This comprehensive volume introduces the basic principles of single atom catalysis, describes metal oxide and carbon support materials for SAC preparation, presents characterization techniques and theoretical calculations, and discusses SACs in areas including selective hydrogenation, oxidation reactions, activation of small molecules, C-C bond formation, and biomedical applications. Highlights the activity, selectivity, and stability advantages of supported metal SACs compared to other heterogeneous catalysts Covers applications of SACs in thermal catalysis, electrocatalysis, and photocatalysis Includes chapters on single atom alloys and supported double and triple metal atom catalysts Discusses the prospects, challenges, and potential industrial applications of SACs Supported Metal Single Atom Catalysis is an indispensable reference for all those working in the fields of catalysis, solid-state chemistry, materials science, and spectroscopy, including catalytic chemists, organic chemists, electrochemists, theoretical chemists, and industrial chemists.

Metal-Support and Metal-Additive Effects in Catalysis

Metal-Support and Metal-Additive Effects in Catalysis PDF Author: B. Imelik
Publisher: Elsevier
ISBN: 0080954367
Category : Technology & Engineering
Languages : en
Pages : 397

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Book Description
Metal-Support and Metal-Additive Effects in Catalysis, Volume 11, documents the proceedings of an international symposium organized by the Institut de Recherches sur la Catalyse - CNRS – Villeurbanne and sponsored by the Centre National de la Recherche Scientifique, Ecully (Lyon), September 14-16, 1982. This volume contains 40 manuscripts that cover a wide range of topics. Among these are studies of metal-support interactions involving Pt/Al2O3, Pt/TiO2,Fe/TiO2, Pt/MgO, Rh /Al2O3, and Pt/CeO2 catalysts. There are also separate chapters dealing with ethane, n-butane, and cyclohexane hydrogenolysis; skeletal isomerization of methylpentanes; the catalytic activity and selectivity of noble metals; CO hydrogenation over supported on SiO2, Al2O3, Ti O2,and Zr O2 nickel catalysts; and the role of promoters in Pd catalysts for methanol synthesis. Subsequent chapters cover the poisoning of platinum and nickel by sulfur; C6H6 and CO chemisorption on Pt78Ni22 (111) single crystal alloy; the surface composition of industrial ammonia synthesis catalysts; and the role of alkalis and electronegative promoters on Fe and Ni catalysts.

Metal-Catalysed Reactions of Hydrocarbons

Metal-Catalysed Reactions of Hydrocarbons PDF Author: Geoffrey C. Bond
Publisher: Springer Science & Business Media
ISBN: 9780387241418
Category : Science
Languages : en
Pages : 692

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Book Description
This unique book, drawing on the author’s lifetime experience, critically evaluates the extensive literature on the field of Metal-Catalysed Reactions of Hydrocarbons. Emphasis is placed on reaction mechanisms involving hydrogenation, hydrogenolysis, skeletal and positional isomerisation, and exchange reactions. The motivation for fundamental research in heterogeneous catalysis is to identify the physicochemical characteristics of active centres for the reaction being studied, to learn how these may be modified or manipulated to improve the desired behavior of the catalyst, and to recognize and control those aspects of the catalyst's structure that limit its overall performance. By restricting the subject of the book to hydrocarbons, Bond has progressively developed the subject matter to include areas of importance both to researchers and to those working in the industry.

Tailored Metal Catalysts

Tailored Metal Catalysts PDF Author: Y. Iwasawa
Publisher: Springer Science & Business Media
ISBN: 9400952619
Category : Science
Languages : en
Pages : 343

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Book Description


Metal-support Interactions in Catalysis, Sintering, and Redispersion

Metal-support Interactions in Catalysis, Sintering, and Redispersion PDF Author: Scott A. Stevenson
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 336

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Book Description
Very Good,No Highlights or Markup,all pages are intact.

Metal-Metal Bonds and Clusters in Chemistry and Catalysis

Metal-Metal Bonds and Clusters in Chemistry and Catalysis PDF Author: John P. Fackler Jr.
Publisher: Springer Science & Business Media
ISBN: 1489924922
Category : Science
Languages : en
Pages : 344

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Book Description
This book contains a series of papers and abstracts from the 7th Industry-University Cooperative Chemistry Program symposium held in the spring of 1989 at Texas A&M University. The symposium was larger than previous IUCCP symposia since it also celebrated the 25 years that had elapsed since the initial discovery by F. A. Cotton and his co-workers of the existence of metal-metal quadruple bonds. Cotton's discovery demonstrated that multiple bonding in inorganic systems is not governed by the same constraints observed in organic chemistry regarding s and p orbital involvement. The d orbitals are involved in the multiple bonding description. The quadruple bond involves considerable d orbital overlap between adjacent metal centers. Part I of this series of papers focuses upon the impact of this discovery and describes further contributions to the development of the field. Multiple metal-metal bonding now is known to permeate broad areas of transition metal chemistry. The understanding of metal-metal bonding that developed as a result of the discovery of multiple metal-metal bonding awakened a new chemistry involving metal clusters. Clusters were defined by Cotton to be species containing metal-metal bonding. Clusters in catalysis therefore seemed a logical grouping of papers in this symposium. Clusters play an every increasing role in the control of chemical reactions. Part II of this book describes some of the interesting new developments in this field. In Part III the papers examine the role clusters play in describing and understanding solid state materials.

Supported Metals in Catalysis

Supported Metals in Catalysis PDF Author: James Arthur Anderson
Publisher: World Scientific
ISBN: 184816677X
Category : Science
Languages : en
Pages : 581

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Book Description
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.

Strong Metal-support Interactions

Strong Metal-support Interactions PDF Author: R. T. K. Baker
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 258

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Book Description