Selective Oxidation of Olefins Over Transition Metal-exchanged Zeolite Y PDF Download

Author: Pei-Shing Dai
Publisher:
ISBN:
Category : Hydrocarbons
Languages : en
Pages : 312

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Author: Jack H. Lunsford
Publisher:
ISBN:
Category :
Languages : en
Pages : 8

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The regular cavities of zeolites form a unique environment for carrying out both stoichiometric and catalytic oxidation reactions. Transition metal ions such as molybdenum and cobalt may be introduced into the zeolite, and, as well, the acidity may be varied. As a continuation of previous work on the oxidation of olefins over Mo-Y zeolites it was demonstrated using shape selective poisons that the catalytic reaction actually takes place in the interior of the zeolite, rather than on the external surface of the crystallites. The role of cobalt-bipyridine-terpyridine complexes in forming reversible oxygen adducts was demonstrated. Although these complexes in zeolites have potential for the separation of oxygen from air, their value in oxidation catalysis is doubtful because of the presence of water the ligands are oxidized. The acidity of Y-type zeolites may be remarkably enhanced by removing aluminum from the framework. Keywords: Zeolite; Oxidation catalysis; Molybdenum zeolite; Cobalt zeolite; Oxygen adduct; Epoxidation; Zeolite acidity; Trimethylphosphine oxidation. (mjm).

Author: H.U. Blaser
Publisher: Elsevier
ISBN: 0080533930
Category : Technology & Engineering
Languages : en
Pages : 693

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After three meetings in Poitiers, France, the 4th International Symposium on Heterogeneous Catalysis and Fine Chemicals was held under the auspices of the New Swiss Chemical Society in Basel, Switzerland. Fundamental as well as applied contributions on the use of heterogeneous catalysis for the preparation of fine chemicals were presented and discussed. The program consisted of 4 plenary lectures, 28 oral contributions and around 90 posters covering a broad range of reactions and catalytic aspects. 82 of these contributions are collected in the present proceedings, grouped into the following 8 topical areas: - Industrial and engineering problems (7 contributions) - Alkylation and acylation reactions (11 contributions) - Enantio- and diastereoselective hydrogenation reactions (9 contributions) - Chemoselective hydrogenation reactions (12 contributions) - Oxidation reactions (14 contributions) - Immobilized and encapsulated complex catalysts (12 contributions) - Zeolite and clay catalysts (12 contributions) - Miscellaneous topics (5 contributions)

Author: S. Namba
Publisher: Elsevier
ISBN: 0080887023
Category : Technology & Engineering
Languages : en
Pages : 411

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This volume is a collection of 14 plenary lectures and 25 invited and contributed papers which were presented at the International Symposium on Chemistry of Microporous Crystals (CMPC) held at Sophia University in Tokyo, Japan. The symposium was organized by the Japan Association of Zeolite in collaboration with twelve major academic Japanese societies dealing with the chemistry of microporous crystals. The symposium was attended by over 250 researchers from 13 countries. The objective of the symposium was to present new horizons and developments in the chemistry and application of natural and synthetic crystalline materials having microporous structures. At this meeting the following trends were noted: new possibilities for highly selective oxidation of hydrocarbon and synthesis of fine chemicals using modified zeolites and metallosilicates; sophisticated syntheses of some valuable hydrocarbons such as 2,6-dimethylnaphthalene and styrene which could not be obtained successfully by conventional catalysts; detailed mechanism of decomposition and aromatization of paraffinic hydrocarbons on zeolitic catalysts; methanol conversion on zeolite catalysts; syntheses of novel wide pore aluminophosphates and their isomorphously substituted porous crystals; detailed analysis of the state of cations in zeolites and metallosilicates; application to direct decomposition of nitric oxide; dynamic behavior of molecules in zeolite pores; chemistry and reaction performance of clay minerals. This proceedings volume contains thorough reviews and original contributions, each of which includes an extensive list of references. The result is a comprehensive overview of the chemistry of zeolite and zeolite-like crystalline materials and clay minerals, including pillared clays.

Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 594

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Author: Dominicus Antonius Gerardus van Oeffelen
Publisher:
ISBN:
Category : Alkenes
Languages : en
Pages : 128

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Author: B. Imelik
Publisher: Elsevier
ISBN: 0080954316
Category : Technology & Engineering
Languages : en
Pages : 365

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Book Description
Catalysis by Zeolites: International Symposium Proceedings (Studies in surface science and catalysis)

Author: Subhash Bhatia
Publisher: CRC Press
ISBN: 1000141764
Category : Science
Languages : en
Pages : 306

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Book Description
Presented in an easy-to-read form, this book on zeolite catalysis cover all aspects of the subject. It focuses on synthesis, structure, diffusion, deactivation, and industrial applications. This book is an ideal text for courses on catalysis or as a supplementary text for those studying applied or industrial chemistry. It is also a useful resource for anyone who works with zeolites as catalysts in the laboratory, pilot plants, or commercial installations.

Author: Jan-Erling Bäckvall
Publisher: John Wiley & Sons
ISBN: 3527604642
Category : Science
Languages : en
Pages : 350

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At the very latest, with the award of the 2001 Nobel Prize for work on asymmetric oxidation, there has been a need for a comprehensive book on such methods. Edited by J.-E. Backvall, one of the world's leaders in the field, this book fills that gap by covering the topic, from classical to green chemistry methods. He has put together a plethora of well-established authors from all over the world who cover every important aspect in high-quality contributions -- whether aerobic oxidation or transition metal-catalyzed epoxidation of alkenes. By providing an overview of this huge topic, this book represents an unparalleled aid for any chemist working in the field. Chapters include: Recent Developments in the Osmium-Catalyzed Dihydroxylation of Olefins Transition Metal-Catalyzed Epoxidation of Alkenes Organocatalytic Oxidation - Ketone-Catalyzed Asymmetric Epoxidation of Olefins Modern Oxidation of Alcohols using environmentally Benign Oxidants Aerobic Oxidations and Related Reactions Catalyzed by N-Hydroxyphthalimide Ruthenium-Catalyzed Oxidation of Alkenes, Alcohols, Amines, Amides, b-Lactams, Phenols, and Hydrocarbons Selective Oxidations of Sulfides and Amines Liquid Phase Oxidation Reactions Catalyzed by Polyoxometalates Oxidation of Carbonyl Compounds Mn-catalysed Oxidation with Hydrogen Peroxide

Author: DOMINICUS A. OEFFELEN
Publisher:
ISBN:
Category :
Languages : de
Pages : 128

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