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Design And Synthesis Of Heterogeneous Catalysts And Catalyst Supports Derived From Thermolytic Molecular Precursors
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Book Synopsis Design and Synthesis of Heterogeneous Catalysts and Catalyst Supports Derived from Thermolytic Molecular Precursors by : Richard Leo Brutchey
Download or read book Design and Synthesis of Heterogeneous Catalysts and Catalyst Supports Derived from Thermolytic Molecular Precursors written by Richard Leo Brutchey and published by . This book was released on 2005 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of Heterogeneous Catalysts by : Umit S. Ozkan
Download or read book Design of Heterogeneous Catalysts written by Umit S. Ozkan and published by John Wiley & Sons. This book was released on 2009-02-11 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This long-awaited reference source is the first book to focus on this important and hot topic. As such, it provides examples from a wide array of fields where catalyst design has been based on new insights and understanding, presenting such modern and important topics as self-assembly, nature-inspired catalysis, nano-scale architecture of surfaces and theoretical methods. With its inclusion of all the useful and powerful tools for the rational design of catalysts, this is a true "must have" book for every researcher in the field.
Book Synopsis Design And Applications Of Single-site Heterogeneous Catalysts: Contributions To Green Chemistry, Clean Technology And Sustainability by : John Meurig Thomas
Download or read book Design And Applications Of Single-site Heterogeneous Catalysts: Contributions To Green Chemistry, Clean Technology And Sustainability written by John Meurig Thomas and published by World Scientific Publishing Company. This book was released on 2012-04-16 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: For far too long chemists and industrialists have relied on the use of aggressive reagents such as nitric and sulphuric acids, permanganates and dichromates to prepare the massive quantities of both bulk and fine chemicals that are needed for the maintenance of civilised life — materials such as fuels, fabrics, foodstuffs, fertilisers and pharmaceuticals. Such aggressive reagents generate vast quantities of environmentally harmful and often toxic by-products, including the oxides of nitrogen, of metal oxides and carbon dioxide.Now, owing to recent advances made in the synthesis of nanoporous solids, it is feasible to design new solid catalysts that enable benign, mild oxidants to be used, frequently without utilising solvents, to manufacture the products that the chemical, pharmaceutical, agro- and bio-chemical industries require. These new solid agents are designated single-site heterogeneous catalysts (SSHCs). Their principal characteristics are that all the active sites present in the high-area solids are identical in their atomic environment and hence in their energy of interaction with reactants, just as in enzymes.Single-site heterogeneous catalysts now occupy a position of growing importance both academically and in their potential for commercial exploitation. This text, the only one devoted to such catalysts, dwells both on principles of design and on applications, such as the benign synthesis of nylon 6 and vitamin B3. It equips the reader with unifying insights required for future catalytic adventures in the quest for sustainability in the materials used by humankind.Anyone acquainted with the language of molecules, including undergraduates in the physical and biological sciences, as well as graduates in engineering and materials science, should be able to assimilate the principles and examples presented in this book. Inter alia, it describes how clean technology and ‘green’ processes may be carried out in an environmentally responsible manner.
Book Synopsis Heterogeneous Catalysts by : Wey Yang Teoh
Download or read book Heterogeneous Catalysts written by Wey Yang Teoh and published by John Wiley & Sons. This book was released on 2021-02-23 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents state-of-the-art knowledge of heterogeneous catalysts including new applications in energy and environmental fields This book focuses on emerging techniques in heterogeneous catalysis, from new methodology for catalysts design and synthesis, surface studies and operando spectroscopies, ab initio techniques, to critical catalytic systems as relevant to energy and the environment. It provides the vision of addressing the foreseeable knowledge gap unfilled by classical knowledge in the field. Heterogeneous Catalysts: Advanced Design, Characterization and Applications begins with an overview on the evolution in catalysts synthesis and introduces readers to facets engineering on catalysts; electrochemical synthesis of nanostructured catalytic thin films; and bandgap engineering of semiconductor photocatalysts. Next, it examines how we are gaining a more precise understanding of catalytic events and materials under working conditions. It covers bridging pressure gap in surface catalytic studies; tomography in catalysts design; and resolving catalyst performance at nanoscale via fluorescence microscopy. Quantum approaches to predicting molecular reactions on catalytic surfaces follows that, along with chapters on Density Functional Theory in heterogeneous catalysis; first principles simulation of electrified interfaces in electrochemistry; and high-throughput computational design of novel catalytic materials. The book also discusses embracing the energy and environmental challenges of the 21st century through heterogeneous catalysis and much more. Presents recent developments in heterogeneous catalysis with emphasis on new fundamentals and emerging techniques Offers a comprehensive look at the important aspects of heterogeneous catalysis Provides an applications-oriented, bottoms-up approach to a high-interest subject that plays a vital role in industry and is widely applied in areas related to energy and environment Heterogeneous Catalysts: Advanced Design, Characterization and Applications is an important book for catalytic chemists, materials scientists, surface chemists, physical chemists, inorganic chemists, chemical engineers, and other professionals working in the chemical industry.
Book Synopsis Supported Catalysts and Their Applications by : David C Sherrington
Download or read book Supported Catalysts and Their Applications written by David C Sherrington and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need to improve both the efficiency and environmental acceptability of industrial processes is driving the development of heterogeneous catalysts across the chemical industry, including commodity, specialty and fine chemicals and in pharmaceuticals and agrochemicals. Drawing on international research, Supported Catalysts and their Applications discusses aspects of the design, synthesis and application of solid supported reagents and catalysts, including supported reagents for multi-step organic synthesis; selectivity in oxidation catalysis; mesoporous molecular sieve catalysts; and the use of Zeolite Beta in organic reactions. In addition, the two discrete areas of heterogeneous catalysis (inorganic oxide materials and polymer-based catalysts) that were developing in parallel are now shown to be converging, which will be of great benefit to the whole field. Providing a snapshot of the state-of-the-art in this fast-moving field, this book will be welcomed by industrialists and researchers, particularly in the agrochemicals and pharmaceuticals industries.
Book Synopsis Enhancing the Catalytic Activity of Site-Isolated Heterogeneous Transition Metal Expoxidation Catalysts Prepared Via the Thermolytic Molecular Precursor Method by : Paul Joseph Cordeiro
Download or read book Enhancing the Catalytic Activity of Site-Isolated Heterogeneous Transition Metal Expoxidation Catalysts Prepared Via the Thermolytic Molecular Precursor Method written by Paul Joseph Cordeiro and published by . This book was released on 2010 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation describes the application of the thermolytic molecular precursor (TMP) method for the synthesis of new heterogeneous catalysts and the performance of these catalysts in the epoxidation of olefins with simple peroxides. The precursors used in this method include complexes of the form LnM[OE(X)3]m, where Ln = OiPr, E = Si or Ge, X = iPr or OtBu, and M = Ti(IV) or Ta(V). These precursors were employed to introduce site-isolated metal centers onto the surface of mesoporous silica (SBA-15), and represent excellent models for the supported metal sites generated. The precursors and materials were characterized using a variety of analytical techniques, and structural comparisons are presented. Surface modification has been used to introduce new functionalities designed to enhance the catalytic activity of two types of supported catalysts, and the effect of the new functionalities was explored. Additionally, a new precursor containing some of these new functionalities has been synthesized and employed to generate new catalytic materials. Site-isolated Ta(V) centers were introduced onto the surface of a mesoporous SBA-15 support via the thermolytic molecular precursor method. After treatment in oxygen, the resulting Si-OH and Ta-OH sites of TaSBA15-O2 were modified with a series of trimethyl group 14 species, Me3E-, by treatment with Me3E-NMe2 (E = Si, Ge, Sn) reagents. The surface modified catalysts, (Me3E)capTaSBA15, exhibit a significantly increased rate of cyclohexene epoxidation with H2O2 as an oxidant, and a decreased amount of allylic oxidation products with respect to the unmodified material, TaSBA15-O2. The rate of non-productive H2O2 decomposition, as monitored via 1H NMR spectroscopy, significantly decreased after the surface modification. The structure of the TaSBA15 catalysts and potential Ta(V) epoxidation intermediates (formed upon treatment of Ta(V) materials with H2O2) were probed using UV-visible absorbance and diffuse-reflectance UV-visible spectroscopy. A Ta(V)([eta]2-O2) intermediate species is proposed for the TaSBA15-O2, (Me3Si)capTaSBA15, and (Me3Ge)capTaSBA15 catalysts, while intermediate species for the (Me3Sn)capTaSBA15 catalysts could not be characterized. The thermolytic molecular precursor method was used to introduce site-isolated Ti(IV) centers onto the surface of a mesoporous SBA-15 support. Prior to thermal treatment to generate Ti-OH sites, residual silanol groups were capped via reaction with Me2N-SiMe3 to give TiMecapSBA15. After low-temperature treatment in oxygen, the resulting Ti-OH sites of TiMecapSBA15-O2 were modified by reaction with a series of protic reagents: phenol, pentafluorophenol, acetic acid, and trifluoroacetic acid. The structure of the resulting TiSBA15 catalysts and the Ti(IV) epoxidation intermediates (formed upon treatment of Ti(IV) materials with tert-butyl hydroperoxide or H2O2) were probed using diffuse-reflectance UV-visible spectroscopy and infrared spectroscopy. A titanium-hydroperoxo species similar to that found in TS-1 is proposed for all catalysts. Samples modified with phenol and pentafluorophenol exhibited conversions of 1-octene that are 20 to 50% higher than those for TiMecapSBA15-O2, without a significant drop in selectivity for the epoxide product, 1,2-epoxyoctane, when TBHP was used as the oxidant. With aqueous H2O2 as the oxidant, the phenol-treated materials exhibited 1-octene conversions that are 15 to 50% greater than those observed for TiMecapSBA15-O2, and an increased selectivity for 1,2-epoxyoctane of 10 to 30%. Additionally, the efficiency of H2O2 usage, as monitored via 1H NMR spectroscopy, increased by a factor of two to three for catalysts modified with phenol and pentafluorophenol, with respect to the efficiency observed over TiMecapSBA15-O2. Catalysts modified with acetic acid and trifluoroacetic acid displayed decreased catalytic turnover numbers and epoxide selectivities when TBHP was used as the oxidant, but exhibited catalytic turnover numbers and epoxide selectivities similar to TiMecapSBA15-O2 when H2O2 was used as the oxidant. After treatment of TiMecapSBA15-O2 with acetic acid, the H2O2 efficiency decreased by a factor of two for the epoxidation of 1-octene with H2O2. The complex Ti[OGe(iPr)3]4 (1) was prepared via the reaction of Ti(OiPr)4 with (iPr)3GeOH, and is a useful structural and spectroscopic model for titanium-germanium species dispersed on silica. This precursor was used to introduce site-isolated Ti(IV) centers onto the surface of a mesoporous SBA-15 support via the thermolytic molecular precursor method. The supported materials, TiGe4SBA15, are active catalysts for the epoxidation of cyclic and terminal olefins with alkyl hydroperoxides under anhydrous conditions. Compared to catalysts synthesized from siloxide-only precursors (TiSi4SBA15), the new catalysts (TiGe4SBA15) displayed two to three times higher catalytic turnover numbers during identical cyclohexene and 1-octene epoxidation reactions, while simultaneously maintaining higher selectivity. The new materials did not significantly leach under these conditions, demonstrating the robustness of this new complex as a molecular precursor to supported titanium(IV) epoxidation catalysts.
Book Synopsis Applications of the Thermolytic Molecular Precursor Method in the Syntheses of Site-isolated Heterogeneous Catalysts by : Daniel Anthony Ruddy
Download or read book Applications of the Thermolytic Molecular Precursor Method in the Syntheses of Site-isolated Heterogeneous Catalysts written by Daniel Anthony Ruddy and published by . This book was released on 2008 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heterogeneous Catalysts for Clean Technology by : Karen Wilson
Download or read book Heterogeneous Catalysts for Clean Technology written by Karen Wilson and published by John Wiley & Sons. This book was released on 2013-09-17 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reactive, but not a reactant. Heterogeneous catalysts play an unseen role in many of today's processes and products. With the increasing emphasis on sustainability in both products and processes, this handbook is the first to combine the hot topics of heterogeneous catalysis and clean technology. It focuses on the development of heterogeneous catalysts for use in clean chemical synthesis, dealing with how modern spectroscopic techniques can aid the design of catalysts for use in liquid phase reactions, their application in industrially important chemistries - including selective oxidation, hydrogenation, solid acid- and base-catalyzed processes - as well as the role of process intensification and use of renewable resources in improving the sustainability of chemical processes. With its emphasis on applications, this book is of high interest to those working in the industry.
Book Synopsis Atomically-Precise Methods for Synthesis of Solid Catalysts by : Sophie Hermans
Download or read book Atomically-Precise Methods for Synthesis of Solid Catalysts written by Sophie Hermans and published by Royal Society of Chemistry. This book was released on 2015 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: With techniques bridging the gap between surface science and heterogeneous catalysis the book presents a tool-kit for anyone wishing to prepare and define solid catalysts.
Book Synopsis Preparation of Catalysts VI by : G. Poncelet
Download or read book Preparation of Catalysts VI written by G. Poncelet and published by Elsevier. This book was released on 1995-03-24 with total page 1205 pages. Available in PDF, EPUB and Kindle. Book excerpt: The organizers of this Sixth Symposium maintained their initial objectives, namely to gather experts from both industries and universities to discuss the scientific problems involved in the preparation of heterogeneous catalysts, and to encourage as much as possible the presentation of research work on catalysts of real industrial significance. Another highlight of these symposia is to reserve a substantial part of the program to new developments in catalyst preparation, new preparation methods and new catalytic systems. The fact that chemical reactions which were hardly conceivable some years ago have become possible today through the development of appropriate catalytic systems proves that catalysis is in constant progress.The papers in this volume deal with preparation of new catalysts and supports, catalyst preparation via sol-gel methods, supported catalysts and synthesis of nanometer size catalysts.
Book Synopsis Advanced Catalysts and Nanostructured Materials by : William R. Moser
Download or read book Advanced Catalysts and Nanostructured Materials written by William R. Moser and published by Academic Press. This book was released on 1996-11-19 with total page 619 pages. Available in PDF, EPUB and Kindle. Book excerpt: The time has come for an assessment of the most important techniques for the fabrication of advanced catalysts. Catalyst production alone is more than a billion dollar business each year, and the product value of chemical processes using advanced catalysts is a few trillion dollars annually. This book seeks to provide a modern, materials science account of the best and most current techniques for the synthesis of advanced catalytic materials. Until now, there has been no single book which contains a definitive and comprehensive description of the important technologies for catalyst synthesis within the context of modern materials science. Academic researchers both in the catalytic sciences and materials sciences must have the best synthesis technologies available to accomplish the preparation of solid-state materials of specific structure and morphology. Althugh the emphasis is on new synthetic techniques for catalytic applications, the bookpresents all of the important technologies for the fabrication of electronic and structural ceramics, and superconductors. - Novel Techniques for Advanced Materials - Nanostructured Materials Synthesis - Mesoporous Molecular Sieves - Pillared Clays - Heteropoly Acids - Nanostructured Supported Metal Catalysts - Nanostructured Metal Oxide Catalysts and Materials - Nanostructured Zeolite Materials - Vapor Phase Materials Synthesis - Sonochemical Materials Synthesis - Aerosol Methods of Catalyst Synthesis - Hydrodynamic Cavitational Techniques for Catalyst and Materials Synthesis - Novel Sol-Gel Methods for Catalyst Synthesis - Supercritical Methods for Materials Synthesis - Liquid Crystal Techniques for Mesoporous Materials - Micelle Techniques for Nanostructured Catalyst Preparation - Fluidized Bed Techniques in Chemical Vapor Deposition - Flame Methods of Advanced Catalyst Synthesis
Book Synopsis Surface Organometallic Chemistry: Molecular Approaches to Surface Catalysis by : Jean-Marie Basset
Download or read book Surface Organometallic Chemistry: Molecular Approaches to Surface Catalysis written by Jean-Marie Basset and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Surface organometallic chemistry is a new field bringing together researchers from organometallic, inorganic, and surface chemistry and catalysis. Topics ranging from reaction mechanisms to catalyst preparation are considered from a molecular basis, according to which the "active site" on a catalyst surface has a supra-molecular character. This. the first book on the subject, is the outcome of a NATO Workshop held in Le Rouret. France, in May. 1986. It is our hope that the following chapters and the concluding summary of recommendations for research may help to provide a definition of surface organometallic chemistry. Besides catalysis. the central theme of the Workshop, four main topics are considered: 1) Reactions of organometallics with surfaces of metal oxides, metals. and zeolites; 2) Molecular models of surfaces, metal oxides, and metals; 3) Molecular approaches to the mechanisms of surface reactions; 4) Synthesis and modification of zeolites and related microporous solids. Most surface organometallic chemistry has been carried out on amorphous high-surf ace-area metal oxides such as silica. alumina. magnesia, and titania. The first chapter. contributed by KNOZINGER. gives a short summary of the structure and reactivity of metal oxide surfaces. Most of our understanding of these surfaces is based on acid base and redox chemistry; this chemistry has developed from X-ray and spectroscopic data, and much has been inferred from the structures and reactivities of adsorbed organic probe molecules. There are major opportunities for extending this understanding by use of well-defined (single crystal) oxide surfaces and organometallic probe molecules.
Book Synopsis Synthesis of Solid Catalysts by : Krijn P. de Jong
Download or read book Synthesis of Solid Catalysts written by Krijn P. de Jong and published by Wiley-VCH. This book was released on 2009-08-04 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical book combines recent progress with a discussion of the general aspects of catalyst preparation. The first part deals with the basic principles of solid catalyst preparation, explaining the main aspects of sol-gel chemistry and interfacial chemistry, followed by such techniques as co-precipitation and immobilization. New tools for catalyst preparation research, including microspectroscopy and high-throughput experimentation, are also taken into account. The second part heightens the practical relevance by providing six case studies on such topics as the preparation of zeolites, hydrotreating catalysts, methanol catalysts and gold catalysts
Book Synopsis The Preparation and Characterization of Highly Dispersed Supported Bimetallic Catalysts from Inorganic and Organometallic Molecular Precursors by : Bert Donald Chandler
Download or read book The Preparation and Characterization of Highly Dispersed Supported Bimetallic Catalysts from Inorganic and Organometallic Molecular Precursors written by Bert Donald Chandler and published by . This book was released on 1999 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific Bases for the Preparation of Heterogeneous Catalysts by : E. Gaigneaux
Download or read book Scientific Bases for the Preparation of Heterogeneous Catalysts written by E. Gaigneaux and published by Elsevier. This book was released on 2002-08-29 with total page 1150 pages. Available in PDF, EPUB and Kindle. Book excerpt: It has become a tradition that every four years, the Université Catholique de Louvain and the Katholieke Universiteit Leuven jointly organize a symposium devoted to the scientific bases for the preparation of heterogeneous catalysts. These meetings bring together researchers from academia and industry and offer a forum for discussions on the chemistry involved in the preparation of industrial heterogeneous catalysts. This volume containing the Proceedings of the 8th International Symposium on Scientific Bases for the Preparation of Heterogeneous Catalysts consists of papers summarizing most of the 139 oral communications and posters selected by the international scientific committee, composed of 27 experts in the field of catalyst preparation, holding an industrial or academia appointment.The contributions focus on the aspects of catalyst preparation. The main topics are: new approaches in catalyst preparation; advanced preparations of nanoporous and mesoporous catalysts; catalysts preparation for special performances and purposes; catalysts for environmental purposes; and molecular catalysis. Emphasis is put on the role that catalysis can play as an essential element of sustainable development.
Book Synopsis Principles and Methods for Accelerated Catalyst Design and Testing by : E.G. Derouane
Download or read book Principles and Methods for Accelerated Catalyst Design and Testing written by E.G. Derouane and published by Springer Science & Business Media. This book was released on 2002-07-31 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: The pace of development in the chemical industry is increasing steadily, bringing with it a corresponding need to develop catalysts as rapidly as possible. High throughput experimentation has had great success in drug design but hitherto it has scarcely been used in the catalysis field. There is thus a need to make the underlying principles of this methodology more widely understood, in a coherent, integrated format. The present book fulfils such a need as it delineates and consolidates the principles and methods underlying accelerated catalyst design and testing. The main challenges for progress in the field are also identified. An indispensable book for all those working in catalytic process analysis and development, in industry and the academic laboratory. Contains an extensive review of catalytic principles, making the book also suitable for postgraduate students seeking to pursue a career in the catalysis field.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2006 with total page 780 pages. Available in PDF, EPUB and Kindle. Book excerpt:
