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Author : Aidan R. McDonald
Publisher :
ISBN 13 : 9789039347454
Total Pages : 196 pages
Book Rating : 4.3/5 (474 download)
Download or read book Immobilised Homogeneous Catalysts for Sequential Fine Chemical Synthesis written by Aidan R. McDonald and published by . This book was released on 2008 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Pierluigi Barbaro
Publisher : Springer Science & Business Media
ISBN 13 : 9048136962
Total Pages : 470 pages
Book Rating : 4.0/5 (481 download)
Download or read book Heterogenized Homogeneous Catalysts for Fine Chemicals Production written by Pierluigi Barbaro and published by Springer Science & Business Media. This book was released on 2010-09-02 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: Table 1 E factors (tonnes of waste generated per tonne of product manufactured [7] Industry segment Annual product tonnage E factor 6 8 Oil refining 10 –10 Approx. 0. 1 4 6 Bulk chemicals 10 –10
Author : Maurizio Benaglia
Publisher : John Wiley & Sons
ISBN 13 : 3527345094
Total Pages : 492 pages
Book Rating : 4.5/5 (273 download)
Download or read book Catalyst Immobilization written by Maurizio Benaglia and published by John Wiley & Sons. This book was released on 2020-04-06 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource on techniques and applications for immobilizing catalysts Catalyst Immobilization: Methods and Applications covers catalyst immobilization topics including technologies, materials, characterization, chemical activity, and recyclability. The book also presents innovative applications for supported catalysts, such as flow chemistry and machine-assisted organic synthesis. Written by an international panel of expert contributors, this book outlines the general principles of catalyst immobilization and explores different types of supports employed in catalyst heterogenization. The book?s chapters examine the immobilization of chiral organocatalysts, reactions in flow reactors, 3D printed devices for catalytic systems, and more. Catalyst Immobilization offers a modern vision and a broad and critical view of this exciting field. This important book: -Offers a guide to supported and therefore recyclable catalysts, which is one of the most important tools for developing a highly sustainable chemistry -Presents various immobilization techniques and applications -Explores new trends, such as 3D printed devices for catalytic systems -Contains information from a leading international team of authors Written for catalytic chemists, organic chemists, process engineers, biochemists, surface chemists, materials scientists, analytical chemists, Catalyst Immobilization: Methods and Applications presents the latest developments and includes a review of the innovative trends such as flow chemistry, reactions in microreactors, and beyond.
Author : Andreas Kirschning
Publisher : Springer Science & Business Media
ISBN 13 : 9783540209157
Total Pages : 354 pages
Book Rating : 4.2/5 (91 download)
Download or read book Immobilized Catalysts written by Andreas Kirschning and published by Springer Science & Business Media. This book was released on 2004-11-22 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: R. Haag, S. Roller: Polymeric Supports for the Immobilisation of Catalysts .- J. Horn, F. Michalek, C.C. Tzschucke, W. Bannwarth: Non-Covalently Solid-Phase Bound Catalysts for Organic Synthesis .- Y. Uozumi: Recent Progress in Polymeric Palladium Catalysts for Organic Synthesis .- D.E. Bergbreiter, J. Li: Applications of Catalysts on Soluble Supports .- B. Desai, C.O. Kappe: Microwave-Assisted Synthesis Involving Immobilized Catalysts .- A. Kirschning, G. Jas: Applications of Immobilized Catalysts in Continuous Flow Processes .- N. End, K.-U. Schöning: Immobilized Catalysts in Industrial Research and Application .- N. End, K.-U. Schöning: Immobilized Biocatalysts in Industrial Research and Production
Author : John C. Chadwick
Publisher : John Wiley & Sons
ISBN 13 : 3527636005
Total Pages : 592 pages
Book Rating : 4.5/5 (276 download)
Download or read book Homogeneous Catalysts written by John C. Chadwick and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first book to illuminate this important aspect of chemical synthesis improves the lifetime of catalysts, thus reducing material and saving energy, costs and waste. The international panel of expert authors describes the studies that have been conducted concerning the way homogeneous catalysts decompose, and the differences between homogeneous and heterogeneous catalysts. The result is a ready reference for organic, catalytic, polymer and complex chemists, as well as those working in industry and with/on organometallics.
Author : Rebecca Anne Shiels
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (52 download)
Download or read book Synthesis, Characterization, and Evaluation of Silica and Polymer Supported Catalysts for the Production of Fine Chemicals written by Rebecca Anne Shiels and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis is an important field of study in chemical engineering and chemistry due to its application in a vast number of chemical transformations. Traditionally, catalysts have been developed as homogeneous molecular species or as heterogeneous insoluble materials. While homogeneous catalysts are typically very active and selective, they are difficult to recover. Conversely, heterogeneous catalysts are easy to recover and reuse, but they generally are less selective. To address these issues, the immobilization of homogeneous catalyst analogs onto solid supports has been a subject of research for the past few decades. Nonetheless, the effects of immobilization are still not completely predictable, and so continued effort is required to develop new immobilized catalysts as well as to develop a better understanding of how different parameters affect catalytic behavior. This dissertation presents the synthesis, characterization, and evaluation of new immobilized catalysts for different applications. First, a solid base catalyst supported on silica was developed and studied in the synthesis of cyclic carbonates from epoxides and carbon dioxide. Next, polymer and silica supported vanadium Schiff base catalysts were developed and evaluated for use in the oxidative kinetic resolution of alpha-hydroxy esters, an enantioselective reaction. Lastly, salen catalyst analogs with amine reactive functional groups were synthesized and characterized for grafting onto aminosilicas with different degrees of amine group isolation. The grafted catalysts were then tested to determine how catalyst spacing on the surface affects their behavior. Throughout the presentation of these results, comparisons are made amongst the new supported catalysts and relevant existing catalysts to discern general trends which could be applied to a wider range of immobilized catalysts. Finally, research opportunities for further improvements in these areas are suggested.
Author : Dirk De Vos
Publisher : John Wiley & Sons
ISBN 13 : 3527613153
Total Pages : 340 pages
Book Rating : 4.5/5 (276 download)
Download or read book Chiral Catalyst Immobilization and Recycling written by Dirk De Vos and published by John Wiley & Sons. This book was released on 2008-07-11 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: Homogeneous asymmetric catalysis offers reliable results and the possibility to 'tune' the catalysis on a rational basis. A pitfall, however, is that the separation of the catalyst from the starting material and products is difficult and often results in the loss of the catalytic material. Immobilization offers a potential solution for the user of enantioselective catalysts in industrial processes and laboratories. Heterogeneous catalysis allows continuous operations, recycling of the catalyst, and an easy separation of the reaction products, reducing both waste and costs. Chemists in academia and industry will welcome this careful selection of topics in this handbook that provides readers with practical and detailed information about the technical requirements for the immobilization of chiral catalysts, their application in synthesis, and methods for recycling.
Author : Eric G. Derouane
Publisher : John Wiley & Sons
ISBN 13 : 9780470094204
Total Pages : 258 pages
Book Rating : 4.0/5 (942 download)
Download or read book Microporous and Mesoporous Solid Catalysts written by Eric G. Derouane and published by John Wiley & Sons. This book was released on 2006-08-14 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt: This series offers practical help for advanced undergraduate, graduate and postgraduate students, as well as experienced chemists in industry and academia working with catalysts in organic and organometallic synthesis. It features tested and validated procedures, authoritative reviews on classes of catalysts, and assessments of all types of catalysts. Micro- and Mesoporous Solid Catalysts describes the use of zeolites and mesoporous solids as catalysts for the production of fine and specialty chemicals. Specific tips and hints are provided and some typical procedures are described in detail In addition to discussing the pros and cons, several major organic transformations are examined including aromatic substitutions, heterocyclic ring formation, amines synthesis, oligomerisation, oxidation and hydroxylation, and other regioselective and stereoselective reactions Features tutorial introductory chapters, including tips and hints for achieving successful organic transformations Important reactions are featured together with recommendations to resolve potential problems.
Author : Kevin David Nagy
Publisher :
ISBN 13 :
Total Pages : 230 pages
Book Rating : 4.:/5 (784 download)
Download or read book Catalyst Immobilization Techniques for Continuous Flow Synthesis written by Kevin David Nagy and published by . This book was released on 2011 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalytic processes are ubiquitous in both research and industrial settings. As continuous flow processes continue to gain traction in research labs and fine and pharmaceutical chemical processes, new opportunities exist for implementing previously difficult catalytic transformations. The major goal of this thesis is to expand and evaluate techniques for immobilized catalyst systems relevant to continuous flow. Fundamental studies in characterizing mixing, dispersion, and residence time distributions in small scale continuous flow systems are also presented. Given the numerous benefits associated with studying chemical processes at small length scales, microfluidic devices are the tool of choice for most studies in this thesis. Thermomorphic solvents offer the potential for homogeneous catalytic processes with biphasic catalyst recovery and recycle. A major limitation of these processes is the number of synthetically useful thermomorphic solvent combinations demonstrated in literature. A screening program using the modified UNIFAC (Dortmund) activity coefficient model to evaluate phase splitting behavior has been developed to predict thermomorphic behavior. Calculation of 861 binary solvent combinations results in 43 potential thermomorphic and 44 biphasic solvent combinations. Extension of the program to ternary solvents resulted in a new class of ternary solvents that display thermomorphic behavior with tunable critical solution temperatures. Evaluation of thermomorphic processes as a general method is presented. Traditional catalyst immobilization techniques rely on covalent grafting and are well suited to continuous flow processing due to the strong interactions of the catalyst to the support. Fluorous physisorption, which relies on interactions between a fluorous support and a fluorous-tagged catalyst, is characterized and presented as an immobilization technique for flow chemistry. The use of a fluorous-tagged Co(III)-salen catalyst to effect the ring opening of epoxyhexane with water is presented. Application of the platform to the ring closing metathesis of N, Ndiallyltosylamide using a fluorous-tagged Hoveyda-Grubbs metathesis catalyst results in significantly accelerated loss of activity over time compared to the salen catalyst. Use of continuous flow selective adsorption reactors to enhance catalytic processes is presented. Continuous feeds of a homogeneous catalyst into a sorbent where the catalyst displays an affinity for the sorbent results in accumulation of the catalyst in the packed bed. The net effect is an enhancement in turnover frequency and turnover number relative to homogeneous flow. Application of this platform to a Lewis acid catalyzed Diels-Alder reaction results in an order of magnitude improvement in turnover frequency compared to batch and homogeneous flow.
Author : Stanley M. Roberts
Publisher : John Wiley & Sons
ISBN 13 : 0470855797
Total Pages : 244 pages
Book Rating : 4.4/5 (78 download)
Download or read book Hydrolysis, Oxidation and Reduction written by Stanley M. Roberts and published by John Wiley & Sons. This book was released on 2003-06-27 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysts are increasingly used by chemists engaged in fine chemical synthesis within both industry and academia. Today, there exists a huge choice of high-tech catalysts, which add enormously to the repertoire of synthetic possibilities. However, catalysts are occasionally capricious, sometimes difficult to use and almost always require both skill and experience in order to achieve optimal results. This series aims to be a practical help for advanced undergraduate, graduate and postgraduate students, as well as experienced chemists in industry and academia working in organic and organometallic synthesis. The series features: * Tested and validated procedures. * Authoritative reviews on classes of catalysts. * Assessments of all types of catalysts. * Expertise from the Leverhulme Centre for Innovative Catalysis, Liverpool, UK. The review section in the first volume of the series contains a report by Stanley M. Roberts on the integration of biotransformations into the catalyst portfolio. The procedure section contains a wide variety of synthetic protocols, such as epoxidations of unsaturated ketones and esters, asymmetric reductions of carbon-oxygen double bonds, asymmetric hydrogenations of carbon-carbon double bonds and other types of reaction. The featured catalysts include a wide range of different materials such as poly-D-leucine, D-fructose-based dioxiranes, oxaborolidine borane, some important titanium and ruthenium complexes as well as baker's yeast. For each reaction there are one or several detailed protocols on how to prepare and employ the various catalysts.
Author : Stanley M. Roberts
Publisher : John Wiley & Sons
ISBN 13 : 9780470090237
Total Pages : 336 pages
Book Rating : 4.0/5 (92 download)
Download or read book Regio- and Stereo-Controlled Oxidations and Reductions written by Stanley M. Roberts and published by John Wiley & Sons. This book was released on 2007-08-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume 5 in the Catalysts for Fine Chemical Synthesis series describes new procedures for the regio- and stereo-controlled transformations of compounds involving oxidation or reduction reactions. It describes a wide range of catalysts, including organometallic systems, biocatalysts and biomimetics. This volume also includes descriptions of a variety of conversions, including: Baeyer-Villiger oxidations; Epoxidation reactions; Hydroxylation reactions; Oxidation of alcohols to aldehydes, ketones and carboxylic acids; Reduction of ketones; and Reduction of alkenes including α, β-unsaturated carbonyl compounds. The book will be an important text for practising synthetic organic chemists in industry and academia. Protocols are written in a standard format by the authors who have discovered them Hints, tips and safety advice (where appropriate) is given to ensure that the procedures are reproducible Indications are given as to the range of starting materials used and, where appropriate, comparisons to alternative methodology Includes relevant references to the primary literature.
Author : H.U. Blaser
Publisher : Elsevier
ISBN 13 : 0080533930
Total Pages : 693 pages
Book Rating : 4.0/5 (85 download)
Download or read book Heterogeneous Catalysis and Fine Chemicals IV written by H.U. Blaser and published by Elsevier. This book was released on 1997-06-19 with total page 693 pages. Available in PDF, EPUB and Kindle. Book excerpt: After three meetings in Poitiers, France, the 4th International Symposium on Heterogeneous Catalysis and Fine Chemicals was held under the auspices of the New Swiss Chemical Society in Basel, Switzerland. Fundamental as well as applied contributions on the use of heterogeneous catalysis for the preparation of fine chemicals were presented and discussed. The program consisted of 4 plenary lectures, 28 oral contributions and around 90 posters covering a broad range of reactions and catalytic aspects. 82 of these contributions are collected in the present proceedings, grouped into the following 8 topical areas: - Industrial and engineering problems (7 contributions) - Alkylation and acylation reactions (11 contributions) - Enantio- and diastereoselective hydrogenation reactions (9 contributions) - Chemoselective hydrogenation reactions (12 contributions) - Oxidation reactions (14 contributions) - Immobilized and encapsulated complex catalysts (12 contributions) - Zeolite and clay catalysts (12 contributions) - Miscellaneous topics (5 contributions)
Author : Yuki Saito
Publisher : Springer Nature
ISBN 13 : 9811972583
Total Pages : 187 pages
Book Rating : 4.8/5 (119 download)
Download or read book Multistep Continuous Flow Synthesis of Fine Chemicals with Heterogeneous Catalysts written by Yuki Saito and published by Springer Nature. This book was released on 2022-11-30 with total page 187 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the development of two kinds of continuous-flow transformation using heterogeneous catalysts, and explains how they can be applied in the multistep synthesis of active pharmaceutical ingredients. It demonstrates and proves that fine chemicals can be synthesized under continuous-flow conditions using heterogeneous catalysis alone. Importantly, the book also proposes a general concept and strategy for achieving multistep flow synthesis and developing heterogeneous catalysts, and shows that commercially available anion exchange resin can be used as a water-tolerant strong base catalyst for various types of continuous-flow aldol-type reaction. Reviewing the state of the art in heterogeneous catalysis in flow chemistry – a “hot topic” and rapidly developing area of organic synthesis – the book will provide readers with a deeper understanding of fine chemical flow synthesis and its future prospects.
Author : Andrew C. Poehler
Publisher :
ISBN 13 : 9781611228946
Total Pages : 0 pages
Book Rating : 4.2/5 (289 download)
Download or read book Homogeneous Catalysts written by Andrew C. Poehler and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In chemistry, homogeneous catalysis is a sequence of reactions that involve a catalyst in the same phase as the reactants. Topics discussed in this book include the catalytic applications of metallic nanoparticles nanocomposites; olefin oxidation chemistry based on Mo catalysts; homogeneous catalysts based on Bis(imino) pyridine complexes of iron, cobalt, vanadium, and chromium; Ru catalysts in asymmetric hydrogenation; supramolecular gel catalysts; glycerol as a sustainable solvent for homogeneous catalysis; homogeneous catalysis in carbonylative coupling reactions and methods for enhancing the activity and selectivity of homogeneous catalysts in the oxidation process.
Author : Christopher Stephen Gill
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (456 download)
Download or read book Novel Hybrid Organic/inorganic Single-sited Catalysts and Supports for Fine Chemical and Pharmaceutical Intermediate Synthesis written by Christopher Stephen Gill and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of catalysis is a fundamental aspect of chemical engineering, as its implications affect all chemical transformations. Traditionally, catalysis has been subdivided into two areas: homogeneous and heterogeneous catalysis. Homogeneous catalysis refers to single-sited catalysts that exist in the same phase as the reaction media. These catalysts tend to be highly active and selective but often difficult to recover and reuse. In contrast, heterogeneous catalysts are typically multi-sited catalysts that exist in a different phase from the reaction media. These catalysts tend to be less active and selective than their homogeneous counterparts. However, the vast majority of industrial scale catalysts are heterogeneous because they can be easily separated, making them easily implemented in continuous processes, allowing for efficient, large scale operations.
Download or read book Catalysts for Fine Chemical Synthesis written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andrew C. Poehler
Publisher : Nova Science Publishers
ISBN 13 : 9781613247495
Total Pages : 523 pages
Book Rating : 4.2/5 (474 download)
Download or read book Homogeneous Catalysts written by Andrew C. Poehler and published by Nova Science Publishers. This book was released on 2011-09-01 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: In chemistry, homogeneous catalysis is a sequence of reactions that involve a catalyst in the same phase as the reactants. Topics discussed in this book include the catalytic applications of metallic nanoparticles nanocomposites; olefin oxidation chemistry based on Mo catalysts; homogeneous catalysts based on Bis(imino) pyridine complexes of iron, cobalt, vanadium, and chromium; Ru catalysts in asymmetric hydrogenation; supramolecular gel catalysts; glycerol as a sustainable solvent for homogeneous catalysis; homogeneous catalysis in carbonylative coupling reactions and methods for enhancing the activity and selectivity of homogeneous catalysts in the oxidation process.
