Heterogeneous Catalysis Of Mixed Oxides

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Mixed oxides are the most widely used catalyst materials for industrial catalytic processes. The principal objective of this book is to describe systematically the mixed oxide catalysts, from their fundamentals through their practical applications. After describing concisely general items concerning mixed oxide and mixed oxide catalysts, two important mixed oxide catalyst materials, namely, heteropolyacids and perovskites, are taken as typical examples and discussed in detail. These two materials have several advantages: 1. They are, respectively, typical examples of salts of oxoacids and double oxide, that is, the two main categories of mixed oxides in solid state chemistry. 2. Both exhibit excellent catalytic performance in nearly crystalline state and are used in several industrial applications. 3. They have studied for many years. In addition, metal oxides functioning as a catalyst support (carrier) are included. Although the supports are very important in practical applications, and tremendous progress has been made in the past decades, few systematic reviews exist. It is notable that heteropolyacids and perovskite exhibit unique performance when used as a support. Fundamental catalytic science and technology and solid state chemistry necessary is presented for the proper understanding of mixed oxide catalysts as well as for R&D. For the latter, the concept of design of practical catalysts is very important. This is considered throughout the book. - Systematically describes design principles of mixed oxide catalysts - Shows how catalysis and solid-state chemistry of metal oxides are inter-related - Covers all useful basic concepts of mixed oxide catalysis

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Genre : Technology & Engineering
Author : M. Misono
Publisher : Newnes
Release : 2013-02-28
File : 193 Pages
ISBN-13 : 9780444538345


Heterogeneous Catalysis Of Mixed Oxides

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The chemistry and catalysis of solid heteropoly compounds are described. Heteropoly compounds are heteropolyanions and their derivatives that maintain the polyanion structure (metal oxide clusters), and catalysts of which the compounds are the essential components are called heteropoly catalyst. Heteropoly compounds are called polyoxometalates as well. First, the structure and chemical properties of heteropoly compounds are summarized, emphasizing the acidic and redox properties. The polyanion structure can be preserved in the solid state, if appropriate cautions are paid, and the acid and redox properties can be controlled in a wide range by choosing the polyanion structure and constituent elements. These are the remarkable advantages of the heteropoly catalysts. Then the catalysis and catalyst design of the heteropoly compounds are described in detail. There are actually several industrial processes using heteropoly catalysts as solid acids and oxidation catalysts. It is important to recognize the presence of hierarchical structures (primary, secondary, and tertiary structures) and three major types of catalysis (surface-type and two bulk-type catalyses). Due to this, catalyst design becomes more realistic and unique properties like shape-selective catalysis develop. Moreover, the dynamic behavior of protons and organic molecules can be elucidated by spectroscopic techniques.

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Genre : Science
Author : Makoto Misono
Publisher : Elsevier Inc. Chapters
Release : 2013-02-28
File : 65 Pages
ISBN-13 : 9780128081112


Metal Oxides In Heterogeneous Catalysis

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Metal Oxides in Heterogeneous Catalysis is an overview of the past, present and future of heterogeneous catalysis using metal oxides catalysts. The book presents the historical, theoretical, and practical aspects of metal oxide-based heterogeneous catalysis. Metal Oxides in Heterogeneous Catalysis deals with fundamental information on heterogeneous catalysis, including reaction mechanisms and kinetics approaches.There is also a focus on the classification of metal oxides used as catalysts, preparation methods and touches on zeolites, mesoporous materials and Metal-organic frameworks (MOFs) in catalysis. It will touch on acid or base-type reactions, selective (partial) and total oxidation reactions, and enzymatic type reactions The book also touches heavily on the biomass applications of metal oxide catalysts and environmentally related/depollution reactions such as COVs elimination, DeNOx, and DeSOx. Finally, the book also deals with future trends and prospects in metal oxide-based heterogeneous catalysis. - Presents case studies in each chapter that provide a focus on the industrial applications - Includes fundamentals, key theories and practical applications of metal oxide-based heterogeneous catalysis in one comprehensive resource - Edited, and contributed, by leading experts who provide perspectives on synthesis, characterization and applications

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Genre : Technology & Engineering
Author : Jacques C. Vedrine
Publisher : Elsevier
Release : 2018-01-11
File : 620 Pages
ISBN-13 : 9780128116326


Mechanisms In Heterogeneous Catalysis

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Heterogeneous catalysis has developed over the past two centuries as a technology driven by the needs of society, and is part of Nobel Prize-winning science. This book describes the spectacular increase in molecular understanding of heterogenous catalytic reactions in important industrial processes. Reaction mechanism and kinetics are discussed with a unique focus on their relation with the inorganic chemistry of the catalyst material. An introductory chapter presents the development of catalysis science and catalyst discovery from a historical perspective. Five chapters that form the thrust of the book are organized by type of reaction, reactivity principles, and mechanistic theories, which provide the scientific basis to structure-function relationships of catalyst performance. Present-day challenges to catalysis are sketched in a final chapter. Written by one of the world's leading experts on the topic, this definitive text is an essential reference for students, researchers and engineers working in this multibillion-dollar field.

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Genre : Science
Author : Rutger A Van Santen
Publisher : World Scientific
Release : 2023-06-28
File : 719 Pages
ISBN-13 : 9781800614024


Heterogeneous Catalysis In Sustainable Synthesis

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Heterogeneous Catalysis in Sustainable Synthesis is a practical guide to the use of solid catalysts in synthetic chemistry that focuses on environmentally benign applications. Collating essential information on solid catalysts into a single volume, it reveals how the efficient use of heterogeneous catalysts in synthetic chemistry can support sustainable applications. Beginning with a review of the fundamentals of heterogeneous catalytic synthesis, the book then explores the basic concepts of heterogeneous catalytic reactions from adsorption to catalyst poisons, the use of non-traditional activation methods, recommended solvents, the major types of both metal and non-metal solid catalysts, and applications of these catalysts in sustainable synthesis. Based on the extensive experience of its expert author, this book aims to encourage and support synthetic chemists in using solid catalysts in their own work, while also highlighting the important link between heterogeneous catalysis and sustainability to all those interested. - Combines foundational knowledge with a focus on practical applications - Organizes information by reaction type, allowing readers to easily find examples of how to carry out specific reaction types with solid catalysts - Highlights emerging areas such as nanoparticle catalysis and metal-organic framework (MOF) based catalysts

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Genre : Science
Author : Bela Torok
Publisher : Elsevier
Release : 2021-09-17
File : 678 Pages
ISBN-13 : 9780128178263


In Situ Characterization Of Heterogeneous Catalysts

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HELPS RESEARCHERS DEVELOP NEW CATALYSTS FOR SUSTAINABLE FUEL AND CHEMICAL PRODUCTION Reviewing the latest developments in the field, this book explores the in-situ characterization of heterogeneous catalysts, enabling readers to take full advantage of the sophisticated techniques used to study heterogeneous catalysts and reaction mechanisms. In using these techniques, readers can learn to improve the selectivity and the performance of catalysts and how to prepare catalysts as efficiently as possible, with minimum waste. In-situ Characterization of Heterogeneous Catalysts features contributions from leading experts in the field of catalysis. It begins with an introduction to the fundamentals and then covers: Characterization of electronic and structural properties of catalysts using X-ray absorption fine structure spectroscopy Techniques for structural characterization based on X-ray diffraction, neutron scattering, and pair distribution function analysis Microscopy and morphological studies Techniques for studying the interaction of adsorbates with catalyst surfaces, including infrared spectroscopy, Raman spectroscopy, EPR, and moderate pressure XPS Integration of techniques that provide information on the structural properties of catalysts with techniques that facilitate the study of surface reactions Throughout the book, detailed examples illustrate how techniques for studying catalysts and reaction mechanisms can be applied to solve a broad range of problems in heterogeneous catalysis. Detailed figures help readers better understand how and why the techniques discussed in the book work. At the end of each chapter, an extensive set of references leads to the primary literature in the field. By explaining step by step modern techniques for the in-situ characterization of heterogeneous catalysts, this book enables chemical scientists and engineers to better understand catalyst behavior and design new catalysts for green, sustainable fuel and chemical production.

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Genre : Science
Author : José A. Rodriguez
Publisher : John Wiley & Sons
Release : 2013-06-10
File : 500 Pages
ISBN-13 : 9781118000168


Heterogeneous Catalysis And Fine Chemicals Ii

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The recession in the traditional heavy industries along with the development of advanced technologies in all the industrial countries has meant that the impact of heterogeneous catalysis in the synthesis of fine chemicals is becoming increasingly noticeable. The second International Symposium on Heterogeneous Catalysis and Fine Chemicals is to be seen in this perspective. Organised by the Laboratory of Catalysis in Organic Chemistry of the University of Poitiers within the framework of the International Symposia of the `Centre National de la Recherche Scientifique' (CNRS), the symposium provided an opportunity for contact between academic researchers and manufacturers, users (or potential users) of solid catalysts for fine chemical synthesis. The book gives an overall view of the problems encountered by academic and industrial researchers. A large variety of reactions are described, the emphasis being on selectivity: chemo-, regio-, stereoselectivity (even enantioselectivity) and on the change of these selectivities as a function of the characteristics of the surface sites (nature, distribution, etc.).The three themes of the symposium, hydrogenation, oxidation and acid-base catalysis were introduced in four plenary lectures and two invited communications, maintaining a balance between the industrial and the academic points of view. Some 60 research papers selected by the Scientific Committee were presented. All are reproduced in full in this proceedings volume.

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Genre : Science
Author : M. Guisnet
Publisher : Elsevier
Release : 1991-04-19
File : 627 Pages
ISBN-13 : 9780080887098


Multiscale And Innovative Kinetic Approaches In Heterogeneous Catalysis

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Kinetics and reactor modeling for heterogeneous catalytic reactions are prominent tools for investigating and understanding catalyst functionalities at nanoscale and the related rates of complex reaction networks. This book illustrates some examples related to the transformation of simple to more complex feedstocks, including different types of reactor designs, i.e., steady-state, transient plug flow reactors, and TAP reactors for which there is sometimes a strong gap in the operating conditions from ultra-high-vacuum to high-pressure conditions. In conjunction, new methodologies have emerged, giving rise to more robust microkinetics models. As exemplified, they include the kinetics and the dynamics of the reactors and span a large range of length and time scales. The objective of this Special Issue is to provide contributions that can illustrate recent advances and novel methodologies for elucidating the kinetics of heterogeneous reactions and the necessary multiscale approach for optimizing the reactor design. This book is dedicated to postgraduate and scientific researchers, and experts in heterogeneous catalysis. It may also serve as a source of original information for the elaboration of lessons on catalysis for Master students.

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Genre : Technology & Engineering
Author : Pascal Granger
Publisher : MDPI
Release : 2019-07-11
File : 214 Pages
ISBN-13 : 9783039211791


Heterogeneous Catalysis And Its Industrial Applications

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This book aims to introduce the basic concepts involved in industrial catalytic processes. It is profusely illustrated with experimental results with the main objective of guiding how to select a suitable catalyst for specific processes. The book is divided in two parts. In the first part the basic concepts are addressed, regarding the existing theories, activity patterns and adsorption-desorption phenomena. In the second part the key experimental methods for the physicochemical characterization of catalysts are presented, as well as the currently used catalyst pre and post treatments. The last chapter describes some important in situ characterization techniques (e.g. XPS and TEM) and surface model patterns related to surface modifications occurring during the reaction. Thoroughly illustrated with microscopy images, spectroscopy data and schematics of reaction mechanisms, the book provides a powerful learning tool for students in undergraduate and graduate level courses on the field of catalysis. Exercises and resolved problems are provided, as well as experimental procedures to support laboratory classes. Furthermore, the content is presented in a carefully chosen sequence, reflecting the 30 year teaching experience of the author. The author, Professor Martin Schmal, sees the present book as a way of conveying basic knowledge needed for the development of more efficient catalysts (i.e. nanostructured materials) and novel industrial chemical processes in the fields of environmental chemistry, fine chemistry, hydrotreating of heavy oils, hydrogen production and biomass processing.

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Genre : Science
Author : Martin Schmal
Publisher : Springer
Release : 2016-09-22
File : 382 Pages
ISBN-13 : 9783319092508


Heterogeneous Catalysis For The Synthetic Chemist

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This work delineates the effect of different reaction variables on the outcome of heterogeneously catalyzed reactions, and explains how to optimize the product yield of specific compounds. Metal catalysis, simple and complex oxides, zeolites and clays are discussed, both as catalysts and as potential supports for catalytically active metals.

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Genre : Science
Author : Robert L. Augustine
Publisher : CRC Press
Release : 2020-08-11
File : 668 Pages
ISBN-13 : 9781000105001