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Author : Kar-wing Kwong (Cathy)
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (32 download)
Download or read book Development of Polyfunctional Polymeric Catalysts written by Kar-wing Kwong (Cathy) and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kar-Wing Cathy Kwong
Publisher :
ISBN 13 : 9781374682641
Total Pages : pages
Book Rating : 4.6/5 (826 download)
Download or read book Development of Polyfunctional Polymeric Catalysts written by Kar-Wing Cathy Kwong and published by . This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : 鍾韻盈
Publisher : Open Dissertation Press
ISBN 13 : 9781374680098
Total Pages : pages
Book Rating : 4.6/5 (8 download)
Download or read book Development of a Multipolymer Reaction and Polyfunctional Polymeric Catalysts written by 鍾韻盈 and published by Open Dissertation Press. This book was released on 2017-01-27 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation, "Development of a Multipolymer Reaction and Polyfunctional Polymeric Catalysts" by 鍾韻盈, Wan-ying, Cecilia, Chung, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. Abstract: Abstract of thesis entitled DEVELOPMENT OF A MULTIPOLYMER REACTION AND POLYFUNCTIONAL POLYMERIC CATALYSTS Submitted by Chung Wan Ying Cecilia for the Degree of Doctor of Philosophy at The University of Hong Kong in March 2008 Polymer-supported reagents and catalysts have long been used in organic synthesis because they simplify product purification and can often be recycled. Simultaneously using two or more such polymeric reagents and catalysts are known as multipolymer reactions. A complementary extension of this concept is to use a single polymer that contains two or more different reagent and/or catalyst groups. We have developed several such polyfunctional polymeric reagents and catalysts. The scientific literature regarding multipolymer reactions and polyfunctional polymers in the context of organic synthesis was reviewed. The synthesis and application of both a monofunctional triflimide polymer and an analogous bifunctional triflimide/amine polymer were described. The monofunctional polymeric triflimide reagent was used together with an amine base to transform a series of phenols into the corresponding aryl triflates. However, the bifunctional triflimide/amine polymer was not effective in such aryl triflate synthesis. A multipolymer reaction system was presented for the selective and catalytic aerobic oxidation of primary benzylic alcohols to aldehydes. Polymer-supported 2,2'-bipyridine and 2,2,6,6-tetramethyl-piperidine-1-oxyl radical (TEMPO) were synthesized and used simultaneously as ligands for copper(II) to generate the catalytically active species required for the oxidation reactions. The recyclablility of these polymers was also examined. The synthesis of two polyfunctional polymers, one soluble and the other insoluble, were reported. Both 2,2'-bipyridine and TEMPO were attached to the same polymer backbone and these were successfully utilized in the same aerobic oxidation reactions previously performed in the multipolymer reaction system. DOI: 10.5353/th_b3970744 Subjects: Organic compounds - Synthesis Chemical reactions Polymers Catalysts
Author : Wan-ying Chung (Cecilia)
Publisher :
ISBN 13 :
Total Pages : 358 pages
Book Rating : 4.:/5 (228 download)
Download or read book Development of a Multipolymer Reaction and Polyfunctional Polymeric Catalysts written by Wan-ying Chung (Cecilia) and published by . This book was released on 2008 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Anatoly D. Pomogailo
Publisher : CRC Press
ISBN 13 : 1000124711
Total Pages : 424 pages
Book Rating : 4.0/5 (1 download)
Download or read book Catalysis by Polymer-Immobilized Metal Complexes written by Anatoly D. Pomogailo and published by CRC Press. This book was released on 2020-08-18 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Deals with a new and promising field developed during the last two decades on the boundary between homogeneous and heterogeneous catalysis. This book presents general information on catalysis for a wide range of organic reactions, e.g., hydrogenation and oxidation reactions, and polymerization transformations. Special attention is paid to electro- and photochemical stimulation of catalytic processes in the presence of immobilized metal complexes. Other topics covered are the quantitative data on the comparison of catalyses by mobile and immobilized metal complexes; main factors affecting the activity of these catalytic systems and methods of optimizing their control; and specific problems of catalysis by fixed complexes (e.g., ligand exchange and electron transfer in metal polymer systems, macromolecular effects and polyfunctional catalysis).
Author : Andrew Dove
Publisher : Royal Society of Chemistry
ISBN 13 : 1788016793
Total Pages : 668 pages
Book Rating : 4.7/5 (88 download)
Download or read book Organic Catalysis for Polymerisation written by Andrew Dove and published by Royal Society of Chemistry. This book was released on 2018-11-15 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years polymerisation using organocatalysts has become an appealing alternative to more traditional metal-based catalysts. Conferring numerous advantages including low cost and ease of use, as well as the ability to precisely control the synthesis of advanced polymer structures, organocatalysts are increasingly used in polymer synthesis. Organic Catalysis for Polymerisation provides a holistic overview of the field, covering all process in the polymer synthesis pathway that are catalysed by organic catalysts. Sub-divided into two key sections for ease of use, the first focuses on recent developments in catalysis and the applications of catalysts to the full range of polymerisations that they have been utilised in; the second concerning monomers, arranges the field by monomer type and polymerisation mechanism. The book will therefore, provide a complimentary view of the field, providing both an overview of state-of-the-art catalyst development and also the best methodologies available to create specific polymer types. Edited by leading figures in the field and featuring contributions from researchers across the globe, this title will serve as an excellent reference for postgraduate students and researchers in both academia and industry interested in polymer chemistry, organic chemistry, catalysis and materials science.
Author : Shinichi Itsuno
Publisher : John Wiley & Sons
ISBN 13 : 1118063953
Total Pages : 674 pages
Book Rating : 4.1/5 (18 download)
Download or read book Polymeric Chiral Catalyst Design and Chiral Polymer Synthesis written by Shinichi Itsuno and published by John Wiley & Sons. This book was released on 2011-06-28 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews chiral polymer synthesis and its application to asymmetric catalysis. It features the design and use of polymer-immobilized catalysts and methods for their design and synthesis. Chapters cover peptide-catalyzed and enantioselective synthesis, optically-active polymers, and continuous flow processes. It collects recent advances in an important field of polymer and organic chemistry, with leading researchers explaining applications in academic and industry R & D.
Author : Lon Mathias
Publisher : Springer Science & Business Media
ISBN 13 : 1461593492
Total Pages : 421 pages
Book Rating : 4.4/5 (615 download)
Download or read book Crown Ethers and Phase Transfer Catalysis in Polymer Science written by Lon Mathias and published by Springer Science & Business Media. This book was released on 2013-11-22 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phase transfer catalysis or interfacial catalysis is a syn thetic technique involving transport of an organic or inorganic salt from a solid or aqueous phase into an organic liquid where reaction with an organic-soluble substrate takes place. Over the past 15 years there has been an enormous amount of effort invested in the development of this technique in organic synthe sis. Several books and numerous review articles have appeared summarizing applications in which low molecular weight catalysts are employed. These generally include either crown ethers or onium salts of various kinds. While the term phase transfer catalysis is relatively new, the concept of using a phasetrans fer agent (PTA) is much older~ Both Schnell and Morgan employed such catalysts in synthesis of polymeric species in the early 1950's. Present developments are really extensions of these early applications. It has only been within the last several years that the use of phase transfer processes have been employed in polymer synthesis and modification. Similarly, the use of polymer-bound phase transfer agents is also a recent development. These and related areas have nonetheless enjoyed explosive growth as mea sured by the number of publications and the variety of applica tions which have appeared. Several reviews dealing with these l 6 polymer-related investigations have been published.
Author : Myun-Jung Jin
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.:/5 (254 download)
Download or read book Development of Polymer-bound and Homogeneous Reagents and Catalysts for Organic Synthesis written by Myun-Jung Jin and published by . This book was released on 1990 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ray Hoff
Publisher : John Wiley & Sons
ISBN 13 : 0470504420
Total Pages : 599 pages
Book Rating : 4.4/5 (75 download)
Download or read book Handbook of Transition Metal Polymerization Catalysts written by Ray Hoff and published by John Wiley & Sons. This book was released on 2010-09-16 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: A one-stop resource for understanding and applying polymerization catalysts An edited volume featuring contributions from leading researchers, the Handbook of Transition Metal Polymerization Catalysts covers the design and synthesis of catalysts, and their applications in synthesis of polymers. Dealing with those polymerization catalysts that afford commercially acceptable yields of polymer with respect to catalyst mass and promising newer catalysts, this practical reference provides polymer and organic chemists with a comprehensive overview of the known methods for developing and applying these important catalysts. With both recent advances and historically important catalysts, the subjects covered in this text include: Metal alkyls and other compounds that function as co-catalysts with a large number of catalysts The varieties of porous silica either necessary or valuable in certain catalyst formulations Catalyst scale-up and commercialization Copper catalysts for olefin polymerization Morphology control Along with the above topics, the Handbook of Transition Metal Polymerization Catalysts provides tables of valuable data to assist in reproducing a synthesis or applying the knowledge to a new problem. Polymerization reactivities, polymer properties, monomer and solvent purity requirements, molecular weights, distribution, and reactivity ratios are also covered. The Handbook of Transition Metal Polymerization Catalysts offers an excellent one-stop resource for understanding and applying polymerization catalysts.
Author : Yury Kissin
Publisher : Elsevier
ISBN 13 : 0080557996
Total Pages : 607 pages
Book Rating : 4.0/5 (85 download)
Download or read book Alkene Polymerization Reactions with Transition Metal Catalysts written by Yury Kissin and published by Elsevier. This book was released on 2008-03-10 with total page 607 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past 30 years, the field of alkene polymerization over transition metal catalysts underwent several major changes:1. The list of commercial heterogeneous Ziegler-Natta catalysts for the synthesis of polyethylene and stereoregular polyolefins was completely renewed affording an unprecedented degree of control over the polymer structure.2. Research devoted to metallocene and other soluble transition-metal catalysis has vastly expanded and has shifted toward complexes of transition metals with multidentate ligands.3. Recent developments in gel permeation chromatography, temperature-rising fractionation, and crystallization fractionation provided the first reliable information about differences between various active centers in transition-metal catalysts.4. A rapid development of high-resolution 13C NMR spectroscopy resulted in greatly expanded understanding of the chemical and steric features of polyolefins and alkene copolymers. These developments require a new review of all aspects of alkene polymerization reactions with transition-metal catalysts. The first chapter in the book is an introductory text for researchers who are entering the field. It describes the basic principles of polymerization reactions with transition-metal catalysts, the types of catalysts, and commercially manufactured polyolefins. The next chapter addresses the principal issue of alkene polymerization catalysis: the existence of catalyst systems with single and multiple types of active centers. The subsequent chapters are devoted to chemistry and stereochemistry of elemental reaction steps, structures of catalyst precursors and reactions leading to the formation of active centers, kinetics of polymerization reactions, and their mechanisms. The book describes the latest commercial polymerization catalysts for the synthesis of polyethylenes and polypropylene The book provides a detailed description of the multi-center nature of commercial Ziegler-Natta catalysts. The book devotes specialized chapters to the most important aspects of transition metal polymerization catalysts: the reactions leading to the formation of active centers, the chemistry and stereochemistry of elemental polymerization steps, reaction kinetics, and the polymerization mechanism. The book contains an introductory chapter for researchers who are entering the field of polymerization catalysis. It describes the basic principles of polymerization reactions with transition-metal catalysts and the types of commercially manufactured polyolefins and copolymersThe book contains over 2000 references, the most recent up to end of 2006.
Author : Raymond Seymour
Publisher : Springer Science & Business Media
ISBN 13 : 146845448X
Total Pages : 154 pages
Book Rating : 4.4/5 (684 download)
Download or read book Applications of Polymers written by Raymond Seymour and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural polymers, such as proteins, starch, cellulose, hevea rubber, and gum which have been available for centuries, have been applied as materials for food, leather, sizings, fibers, structures, waterproofing, and coatings. During the past century, the use of both natural and syn thetic polymers has been expanded to include more intricate applications, such as membranes, foams, medicinals, conductors, insulators, fibers, films, packaging and applications requiring high modulus at elevated temperatures. The topics in this symposium which are summarized in this book are illustrative of some of the myriad applications of these ubiquitous mater ials. As stated in forecast in the last chapter in this book, it is cer tain that revolutionary applications of polymers will occur during the next decades. Hopefully, information presented in other chapters in this book will catalyze some of these anticipated applications. It is appropriate that these reports were presented at an American Chemical Society Polymer Science and Engineering Division Award Symposium honoring Dr. O.A. Battista who has gratifying to note that Phillips Pet roleum Company, which has paved the way in applications of many new poly mers, is the sponsor of this important award. We are all cheerfully expressing our thanks to this corporate spon sor and to Distinguished Professor Raymond B. Seymour of the University of Southern Mississippi who served as the organizer of this symposium and editor of this important book.
Author : John Jr. Boor
Publisher : Elsevier
ISBN 13 : 0323143415
Total Pages : 689 pages
Book Rating : 4.3/5 (231 download)
Download or read book Ziegler-Natta Catalysts Polymerizations written by John Jr. Boor and published by Elsevier. This book was released on 2012-12-02 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ziegler-Natta Catalysts and Polymerizations reviews the general aspects of Ziegler-Natta catalysts and polymerizations of olefins, dienes, and many other types of monomers. Topics covered include the physical state of the polymer during polymerization; modification of Ziegler-Natta catalysts by third components; and termination of polymer chain growth. The oxidation state of catalysts and active centers is also discussed, along with copolymerizations and block polymerizations. This book is comprised of 23 chapters and begins with an overview of Ziegler-Natta catalysts and polymerizations, their historical origins, scientific and commercial importance, and major advances in polymer science. The next chapter focuses on definitions and stereochemistry of Ziegler-Natta catalysts, together with analytical methods used to identify and quantitatively measure their structures. Some of the polymers produced commercially with Ziegler-Natta catalysts are considered. The discussion then turns to mechanisms for initiating and propagating olefins; mechanisms for stereochemical control of conjugated and nonconjugated dienes; and the basic kinetic parameters that characterize Ziegler-Natta polymerizations. This monograph is written especially for chemistry and engineering graduate students and for industrial chemists, engineers, and managers who may become involved in a Ziegler-Natta problem.
Author : Andrew G. Meguerdichian
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (119 download)
Download or read book Inorganic, Polymeric and Metabolite Chemistry for Catalyst Development and Energy Applications in the Chemical Industry written by Andrew G. Meguerdichian and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Phillip Dene Hustad
Publisher :
ISBN 13 :
Total Pages : 604 pages
Book Rating : 4.E/5 ( download)
Download or read book Development of New Catalysts for Living Polymerizations written by Phillip Dene Hustad and published by . This book was released on 2002 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Zhibin Guan
Publisher : Springer Science & Business Media
ISBN 13 : 3540877509
Total Pages : 262 pages
Book Rating : 4.5/5 (48 download)
Download or read book Metal Catalysts in Olefin Polymerization written by Zhibin Guan and published by Springer Science & Business Media. This book was released on 2009-03-31 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polyolefin is a major industry that is important for our economy and impacts every aspect of our lives. The discovery of new transition metal-based catalysts is one of the driving forces for the further advancement of this field. Whereas the classical heterogeneous Ziegler-Natta catalysts and homogeneous early transition metal metallocene catalysts remain the workhorses of the polyolefin industry, in roughly the last decade, tremendous progress has been made in developing non-metallocene-based olefin polymerization catalysts. Particularly, the discovery of late transition metal-based olefin polymerization catalysts heralds a new era for this field. These late transition metal complexes not only exhibit high activities rivaling their early metal counterparts, but more importantly they offer unique properties for polymer architectural control and copolymerization with polar olefins. In this book, the most recent major breakthroughs in the development of new olefin polymerization catalysts, including early metal metallocene and non-metallocene complexes and late transition metal complexes, are discussed by leading experts. The authors highlight the most important discoveries in catalysts and their applications in designing new polyolefin-based functional materials.
Author : Y.V. Kissin
Publisher : Springer
ISBN 13 : 9781461295563
Total Pages : 0 pages
Book Rating : 4.2/5 (955 download)
Download or read book Isospecific Polymerization of Olefins written by Y.V. Kissin and published by Springer. This book was released on 2011-09-27 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The discoveries of organometallic catalysts for olefin polymerization by Karl Ziegler and that of stereoregular olefin polymers by Giulio Natta are probably the two most important achievements in the areas of catalysis and polymer chemistry in the second half of this century. They led to the development of a new branch of chemical industry, and to a large volume production of high-density and linear low-density polyethylene, isotactic polypropylene, ethylene-propylene rubbers, isotactic poly I-butene, and poly-4-methyl-l-pentene. These discoveries merited the Nobel prize, which was awarded to K. Ziegler and G. Natta in 1963. The initial works of Ziegler and Natta were followed by an "explosion" of scientific papers and patents covering all aspects of polymerization chemistry, catalyst synthesis, and polymerization kinetics as well as the structural, chemical, physical, and technological characteristics of stereo regular polyolefins, polydienes, and olefin copolymers. It is sufficient to say that in the twenty-five years after the first publications more than 15,000 papers and patents appeared on subjects related to the area. . The development brought about the establishment of several prominent groups of scientists occupied with the study of olefin polymerization. The most important of these were scientific schools in Italy, Germany, England, the United States, Japan, the Soviet Union, Czechoslovakia, and Venezuela. In addition, many major chemical and petrochemical corporations throughout the world established labora tories devoted to the development of the technology of catalyst synthesis and olefin polymerization.
