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Mechanisms in Homogeneous and Heterogeneous Epoxidation Catalysis

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Release : 2011-10-13
Genre : Technology & Engineering
Kind : eBook
Book Rating : 011/5 ( reviews)

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Book Synopsis Mechanisms in Homogeneous and Heterogeneous Epoxidation Catalysis by : S. Ted Oyama

Download or read book Mechanisms in Homogeneous and Heterogeneous Epoxidation Catalysis written by S. Ted Oyama. This book was released on 2011-10-13. Available in PDF, EPUB and Kindle. Book excerpt: The catalytic epoxidation of olefins plays an important role in the industrial production of several commodity compounds, as well as in the synthesis of many intermediates, fine chemicals, and pharmaceuticals. The scale of production ranges from millions of tons per year to a few grams per year. The diversity of catalysts is large and encompasses all the known categories of catalyst type: homogeneous, heterogeneous, and biological. This book summarizes the current status in these fields concentrating on rates, kinetics, and reaction mechanisms, but also covers broad topics including modeling, computational simulation, process concepts, spectroscopy and new catalyst development. The similarities and distinctions between the different reaction systems are compared, and the latest advances are described. Comprehensive listing of epoxide products Broad comparison of turnover frequencies of homogeneous, hetergeneous, main-group, biomimetic and biological catalysts Analysis of the general strengths and weaknesses of varied catalytic systems Detailed description of the mechanisms of reaction for classical and emerging catalysts

Bridging Heterogeneous and Homogeneous Catalysis

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Release : 2014-04-03
Genre : Technology & Engineering
Kind : eBook
Book Rating : 922/5 ( reviews)

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Book Synopsis Bridging Heterogeneous and Homogeneous Catalysis by : Can Li

Download or read book Bridging Heterogeneous and Homogeneous Catalysis written by Can Li. This book was released on 2014-04-03. Available in PDF, EPUB and Kindle. Book excerpt: There are two main disciplines in catalysis research -- homogeneous and heterogeneous catalysis. This is due to the fact that the catalyst is either in the same phase (homogeneous catalysis) as the reaction being catalyzed or in a different phase (heterogeneous catalysis). Over the past decade, various approaches have been implemented to combine the advantages of homogeneous catalysis (efficiency, selectivity) with those of heterogeneous catalysis (stability, recovery) by the heterogenization of homogeneous catalysts or by carrying out homogeneous reactions under heterogeneous conditions. This unique handbook fills the gap in the market for an up-to-date work that links both homogeneous catalysis applied to organic reactions and catalytic reactions on surfaces of heterogeneous catalysts. As such, it highlights structural analogies and shows mechanistic parallels between the two, while additionally presenting kinetic analysis methods and models that either work for both homogeneous and heterogeneous catalysis. Chapters cover asymmetric, emulsion, phase-transfer, supported homogeneous, and organocatalysis, as well as in nanoreactors and for specific applications, catalytic reactions in ionic liquids, fluorous and supercritical solvents and in water. Finally, the text includes computational methods for investigating structure-reactivity relations. With its wealth of information, this invaluable reference provides academic and industrial chemists with novel concepts for innovative catalysis research.

Heterogeneous Catalysis

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Release : 2011-11-07
Genre : Technology & Engineering
Kind : eBook
Book Rating : 63X/5 ( reviews)

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Book Synopsis Heterogeneous Catalysis by : J. R. H. Ross

Download or read book Heterogeneous Catalysis written by J. R. H. Ross. This book was released on 2011-11-07. Available in PDF, EPUB and Kindle. Book excerpt: Julian R.H. Ross

Carbon Dioxide Electrochemistry

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Release : 2020-10-20
Genre : Science
Kind : eBook
Book Rating : 460/5 ( reviews)

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Book Synopsis Carbon Dioxide Electrochemistry by : Marc Robert

Download or read book Carbon Dioxide Electrochemistry written by Marc Robert. This book was released on 2020-10-20. Available in PDF, EPUB and Kindle. Book excerpt: Homogeneous and Heterogeneous Catalysis

Catalysis

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Release : 1993-09-09
Genre : Technology & Engineering
Kind : eBook
Book Rating : 981/5 ( reviews)

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Book Synopsis Catalysis by : J.A. Moulijn

Download or read book Catalysis written by J.A. Moulijn. This book was released on 1993-09-09. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis is a multidisciplinary activity which is reflected in this book. The editors have chosen a novel combination of basic disciplines - homogeneous catalysis by metal complexes is treated jointly with heterogeneous catalysis with metallic and non-metallic solids. The main theme of the book is the molecular approach to industrial catalysis. In the introductory section Chapter 1 presents a brief survey of the history of industrial heterogeneous and homogeneous catalysis. Subsequently, a selection of current industrial catalytic processes is described (Chapter 2). A broad spectrum of important catalytic applications is presented, including the basic chemistry, some engineering aspects, feedstock sources and product utilisation. In Chapter 3, kinetic principles are treated. The section on fundamental catalysis begins with a description of the bonding in complexes and to surfaces (Chapter 4). The elementary steps on complexes and surfaces are described. The chapter on heterogeneous catalysis (5) deals with the mechanistic aspects of three groups of important reactions: syn-gas conversion, hydrogenation, and oxidation. The main principles of metal and metal oxide catalysis are presented. Likewise, the chapter on homogeneous catalysis (6) concentrates on three reactions representing examples from three areas: carbonylation, polymerization, and asymmetric catalysis. Identification by in situ techniques has been included. Many constraints to the industrial use of a catalyst have a macroscopic origin. In applied catalysis it is shown how catalytic reaction engineering deals with such macroscopic considerations in heterogeneous as well as homogeneous catalysis (Chapter 7). The transport and kinetic phenomena in both model reactors and industrial reactors are outlined. The section on catalyst preparation (Chapters 8 and 9) is concerned with the preparation of catalyst supports, zeolites, and supported catalysts, with an emphasis on general principles and mechanistic aspects. For the supported catalysts the relation between the preparative method and the surface chemistry of the support is highlighted. The molecular approach is maintained throughout. The first chapter (10) in the section on catalyst characterization summarizes the most common spectroscopic techniques used for the characterisation of heterogeneous catalysts such as XPS, Auger, EXAFS, etc. Temperature programmed techniques, which have found widespread application in heterogeneous catalysis both in catalyst characterization and simulation of pretreatment procedures, are discussed in Chapter 11. A discussion of texture measurement, theory and application, concludes this section (12). The final chapter (13) gives an outline of current trends in catalysis. Two points of view are adopted: the first one focusses on developments in process engineering. Most often these have their origin in demands by society for better processes. The second point of view draws attention to the autonomous developments in catalysis, which is becoming one of the frontier sciences of physics and chemistry. In this book emphasis is on those reactions catalyzed by heterogeneous and homogeneous catalysts of industrial relevance. The integrative treatment of the subject matter involves many disciplines, consequently, the writing of the book has been a multi-author task. The editors have carefully planned and harmonized the contents of the chapters.

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