Catalyst Separation Recovery And Recycling

This book looks at new ways of tackling the problem of separating reaction products from homogeneous catalytic solutions. The new processes involve low leaching supported catalysts, soluble supports such as polymers and dendrimers and unusual solvents such as water, fluorinated organics, ionic liquids and supercritical fluids. The advantages of the different possibilities are discussed alongside suggestions for further research that will be required for commercialisation. Unlike other books, in addition to the chemistry involved, the book looks at the process design that would be required to bring the new approaches to fruition. Comparisons are given with existing processes that have already been successfully applied and examples are given where these approaches are not suitable. The book includes: - New processes for the separation of products from solutions containing homogeneous catalysts - Catalysts on insoluble or soluble supports – fixed bed catalysts - continuous flow or ultrafiltration - Biphasic systems: water - organic, fluorous - organic, ionic liquid – organic, supercritical fluids (monophasic or biphasic with water, organic or ionic liquid) - Comparisons with current processes involving atmospheric or low temperature distillation - Consideration of Chemistry and Process Design - Advantages and disadvantages of each process exposed - Consideration of what else is need for commercialisation

本书内容包括:新工艺分离的产品解决方案,含有均相催化剂;催化剂对不溶性或可溶性支持—固定床催化剂连续流或超滤;双相系统:水—有机氟—有机液体,离子液体—有机液体等。

Recoverable and Recyclable Catalysts There is continued pressure on chemical and pharmaceutical industries to reduce chemical waste and improve the selectivity and efficiency of synthetic processes. The need to implement green chemistry principles is a driving force towards the development of recoverable and recyclable catalysts. The design and synthesis of recoverable catalysts is a highly challenging interdisciplinary field combining chemistry, materials science engineering with economic and environmental objectives. Drawing on international research and highlighting recent developments, this book serves as a practical guide for both experts and newcomers to the field. Topics covered include: An introduction to the principles of catalyst recovery and recycling Catalysts on insoluble and soluble support materials Thermomorphic catalysts, self-supported catalysts and perfluorous catalytic systems The development of reusable organic catalysts Continuous flow and membrane reactors Each chapter combines principles with practical information on the synthesis of catalysts and strategies for catalyst recovery. The book concludes with a comparison of different catalytic systems, using case studies to illustrate the key features of each approach. Recoverable and Recyclable Catalysts is a valuable reference source for academic researchers and professionals from a range of pharmaceutical and chemical industries, particularly those working in catalysis, organic synthesis and sustainable chemistry.

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.

This book deals with the physical processes used for the separation of secondary metals from waste sources. The introduction briefly considers the history of the secondary metals industries, defines the terms used in materials recycling and discusses the potential for resource recovery and improved processing. A comprehensive survey is given of the unit operations employed for metals recovery and reclamation, and this is followed by detailed descriptions of processes used to treat fragmentized metal wastes and granulated metal wastes. The final chapter reviews the processing of urban wastes for metals recovery, and gives details of modern plants and practices. The volume aims to bring together technical information on metals recovery from a wide range of sources in order to give a unified review of an important engineering and environmental topic.

Auf fortgeschrittenem Niveau und mit didaktischem Anspruch bietet Ihnen dieser Band zahlreiche Fragen mit Antworten und eine breite Palette von Fallstudien aus der Industrie, ergänzt durch weiterführende Literaturhinweise und Referenzen der Originalliteratur. Insbesondere geht es um die modernsten katalytischen Prozesse mit ihren Anwendungen in der Pharmazie und der Feinchemikalien-Industrie, wobei auch kommerzielle Aspekte besprochen werden. Der Autor, ein erfahrener Dozent mit Industriepraxis, legt Chemikern und Chemieingenieuren damit ein praxistaugliches Hilfsmittel vor.

This book deals with the physical processes used for the separation of secondary metals from waste sources. The introduction briefly considers the history of the secondary metals industries, defines the terms used in materials recycling and discusses the potential for resource recovery and improved processing. A comprehensive survey is given of the

After the great success now in its 2nd Edition: This textbook covers all aspects of catalysis, including computational methods, industrial applications and green chemistry