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Organometallic Modeling Of The Hydrodesulfurization And Hydrodenitrogenation Reactions

Author: Robert A. Sánchez-Delgado
Publisher: Springer Science & Business Media
ISBN: 0306476193
Size: 18.55 MB
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The fields of hydrodesulfurization (HDS) and hydrodenitrogenation (HDN) continue to attract the attention of researchers in the various disciplines connected to these fascinating problems that represent two of the key outstanding chemical challenges for the petroleum refining industry in view of their very strong environmental and commercial implications. One area that has flourished impressively over the last 15 years is the organometallic chemistry of thiophenes and other related sulfur-containing molecules. This has become a powerful method for modeling numerous surface species and reactions implicated in HDS schemes, and nowadays it represents an attractive complement to the standard procedures of surface chemistry and heterogeneous catalysis, for understanding the complex reaction mechanisms involved in this process. Similar developments have begun to appear in connection with HDN mechanisms, although in a much more modest scale and depth. Some years ago when, encouraged by Prof. B. R. James, this book was planned, several excellent reviews and monographs treating different aspects of HDS were already available including some on the subject of organometallic models. However, it seemed appropriate to try to summarize the most striking features of this chemistry in an updated and systematic way, and inasmuch as possible in connection with the common knowledge and beliefs of the mechanisms of heterogeneous HDS catalysis. Hopefully, this attempt to build some conceptual bridges between these two traditionally separated areas of chemistry has met with some success.

Advances In Catalytic Activation Of Dioxygen By Metal Complexes

Author: László I. Simándi
Publisher: Springer Science & Business Media
ISBN: 0306478161
Size: 55.83 MB
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The subject of dioxygen activation and homogeneous catalytic oxidation by metal complexes has been in the focus of attention over the last 20 years. The widespread interest is illustrated by its recurring presence among the sessions and subject areas of important international conferences on various aspects of bioinorganic and coordination chemistry as well as catalysis. The most prominent examples are ICCC, ICBIC, EUROBIC, ISHC, and of course the ADHOC series of meetings focusing on the subject itself. Similarly, the number of original and review papers devoted to various aspects of dioxygen activation are on the rise. This trend is due obviously to the relevance of catalytic oxidation to biological processes such as dioxygen transport, and the action of oxygenase and oxidase enzymes related to metabolism. The structural and functional modeling of metalloenzymes, particularly of those containing iron and copper, by means of low-molecular complexes of iron, copper, ruthenium, cobalt, manganese, etc., have provided a wealth of indirect information helping to understand how the active centers of metalloenzymes may operate. The knowledge gained from the study of metalloenzyme models is also applicable in the design of transition metal complexes as catalytsts for specific reactions. This approach has come to be known as biomimetic or bioinspired catalysis and continues to be a fruitful and expanding area of research.

Heterocycles From Transition Metal Catalysis

Author: András Kotschy
Publisher: Springer Science & Business Media
ISBN: 1402036922
Size: 16.64 MB
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"Heterocycles from Transition Metal Catalysis: Formation and Functionalization" provides a concise summary of the prominent role of late transition metal (palladium, nickel, copper) catalysed processes in the synthesis and functionalization of heterocyclic systems. It gives an introduction to catalytic transformations, an overview of the most important reaction types, and presents synthetically useful catalytic processes classified by the target system and the type of transformation. The book provides a representative selection of transition metal catalysed reactions transformations that are relevant in heterocyclic chemistry. In this way, the authors present a useful resource for members of the academic community looking for a textbook as well as industrial chemists in search of a reference book. This book will be an invaluable resource for synthetic chemists, medicinal chemists, and those more generally interested in applied catalysis.

Directory Of Graduate Research

Author: American Chemical Society. Committee on Professional Training
Publisher:
ISBN:
Size: 64.86 MB
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Faculties, publications and doctoral theses in departments or divisions of chemistry, chemical engineering, biochemistry and pharmaceutical and/or medicinal chemistry at universities in the United States and Canada.

Transition Metal Sulphides

Author: Th. Weber
Publisher: Springer Science & Business Media
ISBN: 9401735778
Size: 37.86 MB
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Hydrotreating catalysis with transition metal sulphides is one of the most important areas of industrial heterogeneous catalysis. The present book deals with the chemical and catalytic aspects of transition metal sulphides, focusing on their use in hydrotreating catalysis. The book¿s 12 chapters present reviews of solid-state, coordination and organometallic chemistry, surface science and spectroscopic studies, quantum chemical calculations, catalytic studies with model and real catalysts, as well as refinery processes. A presentation of state-of-the-art background to pertinent work in the field. Can be used as an introduction to the chemical and catalytic properties of transition metal sulphides as well as an advanced level reference.

Multiphase Homogeneous Catalysis

Author: Boy Cornils
Publisher: Wiley-VCH
ISBN:
Size: 56.80 MB
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This long-awaited two-volume handbook is the one-stop reference for everybody working in the field of multiphase catalysis. Covering academic and industrial applications, it will set the standard for future developments. All editors are top scientists with an industrial or academic background and have put together an international team to present every facet of this fascinating methodology -- including aqueous-phase catalysis, ionic liquids, fluorous-phase chemistry, supercritical solvents, and catalysis with polymer-bound ligands -- in a compact and competent manner. From the Contents: Organic Chemistry in Water Homogeneous Catalysis in the Aqueous Phase Technical Solutions Technical Applications of Supercritical Fluids Organic-Organic Biphasic Catalysis on a Laboratory Scale Enantioselective Catalysis in the Fluorous Phase Catalysis in Nonaqueous Ionic Liquids Commercial Applications and Aspects of Ionic Liquids Catalysis using Supercritical Solvents Soluble Polymer-Bound Catalysts Polymer-Bound Metal Complexes as Catalysts for C-C and C-N Coupling

Handbook Of Spent Hydroprocessing Catalysts

Author: Meena Marafi
Publisher: Elsevier
ISBN: 0444638857
Size: 52.53 MB
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Handbook of Spent Hydroprocessing Catalysts, Second Edition, covers all aspects of spent hydroprocessing catalysts, both regenerable and non-regenerable. It contains detailed information on hazardous characteristics of spent and regenerated catalysts. The information forms a basis for determining processing options to make decisions on whether spent catalysts can be either reused on refinery site after regeneration or used as the source of new materials. For non-regenerable spent catalysts, attention is paid to safety and ecological implications of utilizing landfill and other waste handling and storage options to ensure environmental acceptance. As such, this handbook can be used as a benchmark document to develop threshold limits of regulated species. Includes experimental results and testing protocols which serve as a basis for the development of methodologies for the characterization of solid wastes Presents a database which assists researchers in selecting/designing research projects on spent catalysts, i.e., regeneration vs. rejuvenation and metal reclamation Provides the environmental laws, acts, and liabilities to raise awareness in safety and health issues in all aspects of spent catalysts Contains solid waste management procedures specific to hydroprocessing that serve as a model for designing research projects in other solid waste areas