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Author: Jean-Marie Brégeault
Publisher: Elsevier Masson
ISBN: 9782225826917
Category : Heterogeneous catalysis
Languages : fr
Pages : 276
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Book Description
Author: Jean-Marie Brégeault
Publisher: Elsevier Masson
ISBN: 9782225826917
Category : Heterogeneous catalysis
Languages : fr
Pages : 276
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Book Description
Author: Michel Chanon
Publisher:
ISBN:
Category :
Languages : fr
Pages : 96
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Book Description
Author: Gilles Lefebvre
Publisher: Editions TECHNIP
ISBN: 9782710802044
Category : Catalysis
Languages : fr
Pages : 170
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Book Description
Author: Louis M. Pignolet
Publisher: Springer Science & Business Media
ISBN: 1461336236
Category : Science
Languages : en
Pages : 494
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Book Description
The field of transition metal catalysis has experienced incredible growth during the past decade. The reasons for this are obvious when one considers the world's energy problems and the need for new and less energy demanding syntheses of important chemicals. Heterogeneous catalysis has played a major industrial role; however, such reactions are generally not selective and are exceedingly difficult to study. Homogeneous catalysis suffers from on-site engineering difficulties; however, such reactions usually provide the desired selectivity. For example, Monsanto's synthesis of optically-active amino acids employs a chiral homogeneous rhodium diphosphine catalyst. Industrial uses of homogeneous catalyst systems are increasing. It is not by accident that many homogeneous catalysts contain tertiary phosphine ligands. These ligands possess the correct steric and electronic properties that are necessary for catalytic reactivity and selectivity. This point will be emphasized throughout the book. Thus the stage is set for a comprehensive be treatment of the many ways in which phosphine catalyst systems can designed, synthesized, and studied.
Author: Robertus J. M. Klein Gebbink
Publisher: John Wiley & Sons
ISBN: 3527340610
Category : Technology & Engineering
Languages : en
Pages : 610
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Book Description
An expert overview of current research, applications, and economic and environmental advantages The study and development of new homogeneous catalysts based on first-row metals (Mn, Fe, Co, Ni, and Cu) has grown significantly due to the economic and environmental advantages that non-noble metals present. Base metals offer reduced cost, greater supply, and lower toxicity levels than noble metals?enabling greater opportunity for scientific investigation and increased development of practical applications. Non-Noble Metal Catalysis provides an authoritative survey of the field, from fundamental concepts and computational methods to industrial applications and reaction classes. Recognized experts in organometallic chemistry and homogeneous catalysis, the authors present a comprehensive overview of the conceptual and practical aspects of non-noble metal catalysts. Examination of topics including non-innocent ligands, proton-coupled electron transfer, and multi-nuclear complexes provide essential background information, while areas such as kinetic lability and lifetimes of intermediates reflect current research and shifting trends in the field. This timely book demonstrates the efficacy of base metal catalysts in the pharmaceutical, fine-chemical, and agrochemical industries, addressing both environmental and economic concerns. Providing essential conceptual and practical exploration, this valuable resource: -Illustrates how unravelling new reactivity patterns can lead to new catalysts and new applications -Highlights the multiple advantages of using non-noble metals in homogenous catalysis -Demonstrates how the availability of non-noble metal catalysis reduces costs and leads to immense savings for the chemical industry -Reveals how non-noble metal catalysis are more sustainable than noble metals such as palladium or platinum Non-Noble Metal Catalysis: Molecular Approaches and Reactions is an indispensable source of up-to-date information for catalytic chemists, organic chemists, industrial chemists, organometallic chemists, and those seeking to broaden their knowledge of catalytic chemistry.
Author: CHRISTIAN.. LORBER
Publisher:
ISBN:
Category :
Languages : fr
Pages : 270
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Book Description
LA PREMIERE PARTIE DE CE TRAVAIL DECRIT L'ETUDE DE L'ISOMERISATION DES ALCOOLS ALPHA-ACETYLENIQUES EN DERIVES CARBONYLES ALPHA, BETA-ETHYLENIQUES, CATALYSEE PAR DES COMPLEXES DE METAUX DE TRANSITION. UNE GRANDE PARTIE EST CONSACREE A LA RECHERCHE DE NOUVEAUX CATALYSEURS, ET A CONDUIT AU DEVELOPPEMENT DE NOUVEAUX SYSTEMES CATALYTIQUES BASES SUR L'UTILISATION DES COMPOSES OXO DU RHENIUM (VII) ET DU MOLYBDENE (VI). NOUS NOUS SOMMES AUSSI INTERESSES AU MECANISME D'ACTION DE CES CATALYSEURS VIS-A-VIS DU REARRANGEMENT DES ALCOOLS PROPARGYLIQUES, EN PARTICULIER PAR DES ETUDES D'ENRICHISSEMENT ISOTOPIQUE A L'#1#7O ET PAR LA CARACTERISATION D'INTERMEDIAIRES REACTIONNELS: COMPLEXES METHYLBUTYNOXO DU TITANE(IV) OU DU MOLYBDENE(VI) ET COMPLEXES PI-ACETYLENIQUES DU CUIVRE (I). LA DEUXIEME PARTIE DE CE MEMOIRE TRAITE D'UNE NOUVELLE FACON DE CONCEVOIR ET DE REALISER L'OXYDATION CATALYTIQUE DES ALCOOLS EN DERIVES CARBONYLES, VIA REACTION DE TRANSFERT D'ATOME D'OXYGENE CATALYSEE PAR DES COMPLEXES CIS-DIOXO DU MOLYBDENE(VI), EN PRESENCE DE COOXYDANTS TELS QUE LES SULFOXYDES. NOUS AVONS AUSSI MIS AU POINT UN NOUVEAU SYSTEME CATALYTIQUE D'OXYDATION DES ALCOOLS PAR L'OXYGENE MOLECULAIRE, QUI EST BASE SUR L'UTILISATION CONJOINTE D'UN METAL-OXO (MO#V#I, V#V, CR#V#I, W#V#I, RE#V#I#I, RU#V#I#I ET OS#V#I#I#I) ET DE COMPOSES DU CU#I#I (OU DU CO#I#I#I, FE#I#I#I ET MN#I#I#I) AFIN D'ACTIVER L'OXYGENE MOLECULAIRE. NOS ETUDES PERMETTENT DE MIEUX COMPRENDRE LE MECANISME IMPLIQUE DANS CES OXYDATIONS D'ALCOOLS, ET DE PROPOSER UN CYCLE CATALYTIQUE A CES TRANSFORMATIONS
Author: B. L. Shaw
Publisher: Elsevier
ISBN: 1483181715
Category : Science
Languages : en
Pages : 231
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Book Description
Organo-Transition Metal Compounds and Related Aspects of Homogeneous Catalysis covers compounds that possess carbon atoms bonded to metal and to other carbon atoms. The order in which the substances appear in the book is based on the number of carbon atoms it have. The first section is about the alkyl, aryl, ethynyl, acyl, and carbene complexes. The second section deals with olefin and chelating diolefin complexes and complexes formed from acetylene. The following section covers the p-allylic complexes. The structures, stability, and bonding of alkyl and aryl complexes are fully covered. The magnetic moments and electronic spectra are discussed in detail.The fourth section discusses the conjugated diolefinic complexes that contain butadiene or cyclobutadiene. The rest of the book focuses on cyclopentadienyls, arene complexes, tropylium complexes, and complexes formed from cyclo-octatetraene or azulene. The book will be a useful tool for chemists, chemical engineers, and students and researchers in the field of chemistry.
Author: Christopher Masters
Publisher: Springer Science & Business Media
ISBN: 9400958803
Category : Science
Languages : en
Pages : 284
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Book Description
Soluble catalysts are used extensively in many branches of chemistry and are indeed a vital constituent of many natural processes. They find wide application throughout the chemical industry where they assist in the production of several million tonnes of chemicals each year. Since homogeneous systems, especially those incorporating transition metals, often function effectively under milder conditions than their heterogeneous counterparts, they are becoming increasingly important at a time when the chemical industry in particular, and society in general, is seeking ways of conserving energy and of making the best possible use of available resources. My principal objective in- writing this book is to engender sufficient enthusiasm for, and knowledge of, the subject in the reader that he or she will be encouraged to begin, or continue, to make their own contribution to advancing our knowledge of homogeneous catalysis. After attempting to acquaint the reader with some of the ground rules I have tried to describe the present scope, and the future potential, of this fascinating field of chemistry by drawing both on academic and on industrial data sources. This approach stems from a personal conviction that future progress could be considerably hastened by a more meaningful dialogue between chemists working both in industrial and in academic research institutions. Wherever possible, examples of the commercial application of homogeneous catalyst systems have been included and no attempt has been made in any way to disguise the many unresolved questions and exciting challenges which still pervade this rapidly developing area.
Author: George William Parshall
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 262
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Book Description
Contains a balanced discussion of homogeneous catalytic reactions that are used in industry, featuring every documented example employed in a current commercial process, or that have a broad application in the organic synthesis laboratory. Incorporates synthesis with chiral catalysts in chapters on hydrogenation, CO chemistry and olefin oxidation. New additions include Tennessee Eastman's coal-based acetic anhydride plant and IFP's Dimersol process for dimerizing propylene as well as major changes in the areas on pharmaceuticals, flavors, fragrances, agricultural and electronic chemicals.
Author: A. Mortreux
Publisher: Springer Science & Business Media
ISBN: 9400938977
Category : Science
Languages : en
Pages : 371
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Book Description
Catalysts are now widely used in both laboratory and industrial-scale chemistry. Indeed, it is hard to find any complex synthesis or industrial process that does not, at some stage, utilize a catalytic reaction. The development of homogeneous transition metal catalysts on the laboratory scale has demonstrated that these systems can be far superior to the equivalent heterogeneous systems, at least in terms of selectivity. is an increasing interest in this field of research from both an Thus, there academic and industrial point of view. In connection with the rapid developments in this area, four universities from the E.E.C (Aachen, FRG; Liege, Belgium; Milan, Italy; and Lille, France) have collaborated to organise a series of seminars for high-level students and researchers. These meetings have been sponsored by the Commission of the E.E.C and state organizations. The most recent of these meetings was held in Lille in September 1985 and this book contains updated and expanded presentations of most of the lectures given there. These lectures are concerned with the field of homogeneous transition metal catalysis and its application to the synthesis of organic intermediates and fine chemicals from an academic and industrial viewpoint. The continuing petroleum crisis which began in the early 1970s has given rise to the need to develop new feedstocks for the chemical industry.
