Studies in Catalytic Isomerization and Dehydrogenation of Hydrocarbons PDF Download
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Author: Seymore Goldwasser
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 22
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Book Description
Author: Seymore Goldwasser
Publisher:
ISBN:
Category : Catalysis
Languages : en
Pages : 22
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Book Description
Author: Akshai Kumar
Publisher: Elsevier
ISBN: 0128220929
Category : Science
Languages : en
Pages : 245
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Book Description
Pincer-Metal Complexes: Applications in Catalytic Dehydrogenation Chemistry provides an overview of pincer-metal catalytic systems that transform hydrocarbons and their derivatives from an synthetic and mechanistic point-of-view. This book provides thorough coverage of the operating mechanisms and dehydrogenation catalyst compatibility in both functionalized and unfunctionalized hydrocarbon systems. In addition, it includes success stories of pincer-metal systems, as well as current and future challenges. The book is an ideal reference for researchers practicing synthetic organic chemistry, inorganic chemistry, organometallic chemistry and catalysis in academia and industry. In recent years there has been a surge in the research on hydrocarbon dehydrogenation catalytic systems that are compatible with polar substituents. This helps facilitate formulation of tandem processes that are not limited to hydrocarbon transformation but also to hydrocarbon functionalization in a single pot. - Covers applications of pincer-metal complexes in organic transformations - Includes pincer-group 8 and 9 metal complexes for alkane dehydrogenations - Features a discussion of pincer-metal complexes for the dehydrogenation of functionalized hydrocarbons and electro-catalytic transformations
Author: Herman Pines
Publisher: Elsevier
ISBN: 0323155928
Category : Science
Languages : en
Pages : 320
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Book Description
The Chemistry of Catalytic Hydrocarbon Conversions covers the various chemical aspects of catalytic conversions of hydrocarbons. This book is composed of eight chapters that include catalytic synthesis of hydrocarbons from carbon monoxide, hydrogen, and methanol. The opening chapters examine various acid- and base-catalyzed reactions, such as isomerization, polymerization, oligomerization, alkylation, catalytic cracking, reforming, hydrocracking, and hydrogenation. The subsequent chapters are devoted to specific catalytic reactions, including heterogeneous hydrogenation, dehydrogenation, aromatization, and oxidation. Other chapters describe the homogeneous catalysis by transition metal organometallic catalysts and the metathesis of unsaturated hydrocarbons. The concluding chapter deals with the synthesis of liquid hydrocarbon fuels from carbon monoxide, hydrogen, methanol, and dimethyl ether. This book is of great benefit to petroleum chemists, engineers, and researchers.
Author: Soumik Biswas
Publisher:
ISBN:
Category : Alkanes
Languages : en
Pages : 143
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Book Description
Bisphosphine and bisphohinite ligated pincer iridium complexes of the type (tBuPCP)IrHn (tBuPCP = C6H3-2,6-(CH2PtBu2)2, n=2, 4) and (tBuPOCOP)Ir(L) (tBuPOCOP = C6H3-2,6-(OPtBu2)2, L = H2, C2H4) are recognized to be outstanding catalyst precursors for transfer dehydrogenation of alkane. Catalytic regioselective dehydrogenation of alkane has a vast prospect. The catalytic transfer dehydrogenation property of these two pincer-iridium catalysts have been exploited in a tandem process known as Alkane Metathesis (AM), a process with enormous potential to transform lower hydrocarbons to higher hydrocarbons suitable for transportation fuel. Our studies here determine the difference between (tBuPCP)IrHn vs. (tBuPOCOP)Ir(L) in catalytic dehydrogenation of n-alkane to give regioselective alkenes is quite considerable. Hence we propose that this difference largely affects AM in the tandem system to result a product distribution of different molecular selectivity. We have found enormous disparity between these two complexes in terms of reactivity in different catalytic transfer dehydrogenation system. Kinetic, mechanistic and DFT (DFT by Prof. K.K.J et al.) studies predict that the subtle difference recognized in sterics exert major differences in the catalytic dehydrogenation. The sterics indicated here are mostly controlled by the alkyl groups attached to two phosphorous atom and the linkage in the pincer arm [-CH2- in (tBuPCP)Ir or -O- in (tBuPOCOP)Ir]. Catalytic 1-alkene isomerization is also another important reaction to study in this context as it has been well recognized to happen in parallel with n-alkane transfer dehydrogenation. All our different mechanistic, kinetic and DFT (DFT by Prof. K.K.J et al.) studies strongly indicate that the operative mechanism of 1-alkene isomerization is not previously presumed hydride-insertion pathway, which is very common in metal-hydride system. Although iridium-hydride plays a major role in catalytic transfer dehydrogenation, evidences indicate n-allyic mechanism of 1-alkene isomerization to be operative in this case. In addition our studies have gone in details to look into the elementary steps for n-allyic pathway. Besides these studies the transfer dehydrogenation technique has been exploited to determine different thermodynamic parameters of cycloalkanes of different ring sizes. In addition we have also investigated the regioselectivity in dehydrogenation of branch alkanes.
Author: Wilhelmus Jacobus van de Weerdt
Publisher:
ISBN:
Category :
Languages : en
Pages : 107
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Book Description
Author: P. Henry
Publisher: Springer Science & Business Media
ISBN: 940099446X
Category : Science
Languages : en
Pages : 449
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Book Description
The field of organometallic chemistry has emerged over the last twenty-five years or so to become one of the most important areas of chemistry, and there are no signs of abatement in the intense current interest in the subject, particularly in terms of its proven and potential application in catalytic reactions involving hydrocarbons. The development of the organometallic/ catalysis area has resulted in no small way from many contributions from researchers investigating palladium systems. Even to the well-initiated, there seems a bewildering and diverse variety of organic reactions that are promoted by palladium(II) salts and complexes. Such homogeneous reactions include oxidative and nonoxidative coupling of substrates such as olefins, dienes, acetylenes, and aromatics; and various isomerization, disproportionation, hydrogenation, dehydrogenation, car bonylation and decarbonylation reactions, as well as reactions involving formation of bonds between carbon and halogen, nitrogen, sulfur, and silicon. The books by Peter M. Maitlis - The Organic Chemistry of Palladium, Volumes I, II, Academic Press, 1971 - serve to classify and identify the wide variety of reactions, and access to the vast literature is available through these volumes and more recent reviews, including those of J. Tsuji [Accounts Chem. Res. , 6, 8 (1973); Adv. in Organometal. , 17, 141 (1979)], R. F. Heck [Adv. in Catat. , 26, 323 (1977)], and ones by Henry [Accounts Chem. Res. , 6, 16 (1973); Adv. in Organometal. , 13, 363 (1975)]. F. R. Hartley's book - The Chemistry of Platinum and Palladium, App!. Sci. Pub!.
Author: Wilhelmus Jacobus van de Weerdt
Publisher:
ISBN:
Category :
Languages : en
Pages : 107
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Book Description
Author: James J Spivey
Publisher: Royal Society of Chemistry
ISBN: 1847553281
Category : Technology & Engineering
Languages : en
Pages : 337
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Book Description
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: E.G. Christoffel
Publisher: Elsevier
ISBN: 0080887341
Category : Technology & Engineering
Languages : en
Pages : 279
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Book Description
Providing a concise treatment of methods of heterogeneous catalysis used in the laboratory, this book describes the basic phenomena of heterogeneous catalytic reaction systems and discusses in detail the experimental methods and procedures for investigating these systems. The introductory chapter illustrates the whole procedure with an actual example. The next chapter presents the basic phenomena of catalytic systems and the concepts used in studying them. The third chapter covers the description of methods for investigating reaction mechanisms and the dynamics of heterogeneous catalytic reaction systems. The last chapter discusses the design and operation modes of laboratory reactors, frequently used for the investigation of heterogeneous catalytic reactions.The approach is interdisciplinary, providing a balance between chemical engineering and chemical viewpoints of treating laboratory-scale reactors. Chemists and chemical engineers involved in catalyst research will be very interested in this book and it can also be usefully used in specialized courses for graduate students in chemistry or in chemical reaction engineering.
Author: Herman Pines
Publisher: Elsevier
ISBN: 0323144829
Category : Science
Languages : en
Pages : 602
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Book Description
Base-Catalyzed Reactions of Hydrocarbons and Related Compounds focuses on the use of bases as catalysts for the conversion of hydrocarbons and related compounds. In order to emphasize the broad scope of base-catalyzed reactions, examples dealing with the conversion of non-hydrocarbons are given. Comprised of 14 chapters, this book begins with a historical overview of base-catalyzed conversions of hydrocarbons, followed by a discussion on the isomerization of olefins, acetylenes, and allenes, as well as the dimerization and oligomerization of hydrocarbons. The reader is then introduced to a variety of reactions, including those between aromatic hydrocarbons and olefins and between alkylpyridines and alkenylpyridines; homogeneous carbon-carbon addition reactions; and reactions of aprotic solvents with olefins. Subsequent chapters explore carbon-carbon addition of olefins with miscellaneous compounds; addition of ammonia, amines, and anilines to olefinic hydrocarbons; hydrogenation and oxygenation; dehydrogenation, aromatization, and hydrogen transfer; and dehydration of alcohols. This monograph will be of interest to chemists.
