Download or read book Synthesis Characterization and Catalytic Testing of Chiral Schiff Base Metal Complexes Catalysts Immobilized in MCM 41 written by Rozie Sarip and published by . This book was released on 2007 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Schiff Base Metal Complexes written by Pranjit Barman and published by John Wiley & Sons. This book was released on 2023-05-15 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: Schiff Base Metal Complexes Schiff bases are compounds created from a condensed amino compounds, which frequently form complexes with metal ions. They have diverse applications in biology, catalysis, material science and industry. Understanding these compounds, their properties, and the available methods for synthesizing them is a key to unlocking industrial innovation. Schiff Base Metal Complexes provides a comprehensive overview of these compounds. It introduces the compounds and their properties before discussing their various synthesizing methods. A survey of existing and potential applications gives a complete picture and makes this a crucial guide for researchers and industry professionals looking to work with Schiff base complexes. Schiff Base Metal Complexes readers will also find: A systematic and organized structure designed to make information instantly accessible Detailed coverage of thermal synthesis, photochemical synthesis, and more Challenges with different methods described in order to help readers make the correct choice for their own work Schiff Base Metal Complexes is a useful reference for organic chemists, materials scientists, and researchers or industry professionals working with organometallics.
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.
Download or read book Catalysis in Confined Frameworks written by Hermenegildo Garcia and published by John Wiley & Sons. This book was released on 2023 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the synthesis and applications of porous solid catalysts Heterogeneous catalysis is a catalytic process in which catalysts and reactants exist in different phases. Heterogeneous catalysis with solid catalysts proceeds through the absorption of substrates and reagents which are liquid or gas, and this is largely dependent on the accessible surface area of the solid which can generate active reaction sites. The synthesis of porous solids is an increasingly productive approach to generating solid catalysts with larger accessible surface area, allowing more efficient catalysis. Catalysis in Confined Frameworks: Synthesis, Characterization, and Applications provides a comprehensive overview of synthesis and use of porous solids as heterogeneous catalysts. It provides detailed analysis of pore engineering, a thorough characterization of the advantages and disadvantages of porous solids as heterogeneous catalysts, and an extensive discussion of applications. The result is a foundational introduction to a cutting-edge field. Catalysis in Confined Frameworks: Synthesis, Characterization, and Applications readers will also find: An editorial team comprised of international experts with extensive experience Detailed discussion of catalyst classes including zeolites, mesoporous aluminosilicates, and more A special focus on size selective catalysis Catalysis in Confined Frameworks: Synthesis, Characterization, and Applications is an essential reference for catalytic chemists, organic chemists, materials scientists, physical chemists, and any researchers or industry professionals working with heterogeneous catalysis.
Download or read book Heterogeneous and Homogeneous Chiral Catalysts written by Kavita Pathak and published by LAP Lambert Academic Publishing. This book was released on 2012-08 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: The work embodied in this book comprises of brief introduction of chiral homogeneous and heterogeneous asymmetric catalysis. Research work presented in this book presents synthesis and physicochemical characterization of mesoporous materials MCM-41 and SBA-15 and used them as supports for immobilization of chiral BINOL, immobilization of chiral BINOL on mesoporous materials SBA-15 and MCF of relatively large pore size and used as active catalysts for asymmetric diethylzinc addition to aldehydes, synthesis of chiral recyclable salen based metal complexes, new chiral polymeric Zn(salen) catalyst and used as a heterogeneous catalyst in asymmetric phenylacetylene addition to carbonyls, synthesis of chiral dimeric and polymeric Mn(III) salen complexes respectively. These complexes were used as recyclable catalysts in oxidative kinetic resolution of racemic secondary alcohols.
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
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.
Download or read book Asymmetric Catalysis from a Chinese Perspective written by Shengming Ma and published by Springer Science & Business Media. This book was released on 2011-07-06 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Qi-Lin Zhou and Jian-Hua Xie: Chiral Spiro Catalysts.- Fuk Loi Lam, Fuk Yee Kwong and Albert S. C. Chan: Chiral Phosphorus Ligands with Interesting Properties and Practical Applications.- Jiang Pan, Hui-Lei Yu, Jian-He Xu, Guo-Qiang Lin: Advances in Biocatalysis: Enzymatic Reactions and Their Applications.- Mei-Xiang Wang: Enantioselective Biotransformations of Nitriles.- Man Kin Wong, Yiu Chung Yip and Dan Yang: Asymmetric Epoxidation Catalyzed by Chiral Ketones.- W. J. Liu, N. Li and L. Z. Gong: Asymmetric Organocatalysis.- Qing-Hua Fan and Kuiling Ding: Enantioselective Catalysis with Structurally Tunable Immobilized Catalysts.- Chang-Hua Ding, Xue-Long Hou: Transition Metal-Catalyzed Asymmetric Allylation.- Jian Zhou and Yong Tang: Enantioselective Reactions with Trisoxazolines.- Xiang-Ping Hu, Duo-Sheng Wang, Chang-Bin Yu, Yong-Gui Zhou, and Zhuo Zheng: Adventure in Asymmetric Hydrogenation: Synthesis of Chiral Phosphorus Ligands and Asymmetric Hydrogenation of Heteroaromtics.
Download or read book Preparation of Solid Catalysts written by Gerhard Ertl and published by John Wiley & Sons. This book was released on 2008-08-29 with total page 639 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solid catalysts play a fundamental role in all areas between basic research and industrial applications. This book offers a large amount of information about the preparation of solid catalysts. All types of solid catalysts and all important aspects of their preparation are discussed. The highly topical contributions are written by leading experts in disciplines ranging from solid state, interface and solution chemistry to industrial engineering. The straightforward presentation of the material and the comprehensive coverage make this book an essential and indispensible tool for every scientist and engineer working with solid catalysts.
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.
Download or read book Catalyst Characterization written by Boris Imelik and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: to the Fundamental and Applied Catalysis Series Catalysis is important academically and industrially. It plays an essential role in the manufacture of a wide range of products, from gasoline and plastics to fertilizers and herbicides, which would otherwise be unobtainable or prohibitive ly expensive. There are few chemical-or oil-based material items in modern society that do not depend in some way on a catalytic stage in their manufacture. Apart from manufacturing processes, catalysis is finding other important and over-increasing uses; for example, successful applications of catalysis in the control ofpollution and its use in environmental control are certain to in crease in the future. The commercial import an ce of catalysis and the diverse intellectual challenges of catalytic phenomena have stimulated study by a broad spectrum of scientists including chemists, physicists, chemical engineers, and material scientists. Increasing research activity over the years has brought deeper levels of understanding, and these have been associated with a continually growing amount of published material. As recentlyas sixty years ago, Rideal and Taylor could still treat the subject comprehensively in a single volume, but by the 19 50s Emmett required six volumes, and no conventional multivolume text could now cover the whole of catalysis in any depth.
Download or read book Base Metal Catalysis 2 written by Naohiko Yoshikai and published by Georg Thieme Verlag. This book was released on 2023-09-06 with total page 876 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in catalytic methods based on earth-abundant metals are discussed. Catalysis with earth-abundant metals, often referred to as base metals, is having a transformative impact on synthetic chemistry. Research in this area is driven not only by the common interest in the sustainability of chemical synthesis but also by the vast opportunity to discover and develop novel reaction chemistry that is not attainable with rare and precious metal catalysts. This work provides representative developments in base-metal catalysis, specifically catalysis with 3d-transition metals, in a format suitable for practitioners of organic synthesis. Volume 2 is focused on recent advances in catalysis involving cobalt, iron, manganese, and chromium. Topics covered include various types of cross-coupling processes, hydrofunctionalization of alkenes and alkynes, C-H functionalizations, and catalytic Nozaki–Hiyama–Kishi-type reactions.
Download or read book Characterization of Catalytic Materials written by Israel E. Wachs and published by Momentum Press. This book was released on 2010 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous catalysis has undergone a revolutionary change in the past two decades due to the development of sophisticated characterization methods that provide fundamental information about the catalyst bulk structures, surfaces, and their properties. For the first time, these characterization methods have allowed researchers to "see" the surfaces of catalytic materials, their bulk structures (crystalline as well as amorphous phases), the influence of the process conditions on the catalytic material, as well as the effect of different synthesis methods. This new information has tremendously advanced our understanding of catalytic materials and their properties. These characterization methods have become our "eyes" and are indispensible in the development of new catalytic materials. It is hard to conceive of a modern heterogeneous catalysis activity, be it research or manufacturing, without the aid of these new characterization techniques.
Download or read book Supported Metal Complexes written by F.R. Hartley and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is now IS years since the first patents in polymer supported metal complex catalysts were taken out. In the early days ion-exchange resins were used to support ionic metal complexes. Soon covalent links were developed, and after an initially slow start there was a period of explosive growth in the mid to late 1970s during which virtually every homogeneous metal complex catalyst ever reported was also studied bound to a support. Both polymers and inorganic oxides were studied as supports, although the great preponderance of workers studied polymeric supports, and of these polystyrene was by far the commonest used. This period served to show that by very careful design polymer-supported metal complex catalysts could have specific advantages over homogeneous metal complex catalysts. However the subject was a complicated one. Merely immobilising a successful metal complex catalyst to a functionalised support rarely yielded other than an inferior version of the catalyst. Amongst the many discouraging results of the 1970s, there were more than enough results that were sufficiently encouraging to demonstrate that, by careful design, supported metal complex catalysts could be prepared in which both the metal complex and the support combined together to produce an active catalyst which, due to the combination of support and complex, had advantages of activity, selectivity and specificity not found in homogeneous catalysts. Thus a new generation of catalysts was being developed.
Download or read book Supported Mono and Bimetallic Complexes and Clusters written by Joseph David Kistler and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Site-isolated solid supported metal catalysts are important in industry and technology due to the cost efficiency to make and to recover and reuse them. These types of materials have catalytic properties similar to molecular complexes in solution while being easy to separate in heterogeneous catalytic reactions. The goal of this work was to synthesize supported metal complex catalysts while maintaining uniform catalytic sites. The syntheses were performed using precise glovebox and Schlenk techniques to achieve these highly uniform structures. These materials were then used to understand the relationship between structure of a catalytic site and the activity of the catalyst. This fundamental understanding of catalysts is important in advancing the field of catalysis. The structure of the catalysts were characterized using infrared (IR), extended X-ray absorption fine structure (EXAFS) and X-ray absorption near edge structure (XANES) spectroscopies along with high angle annular dark field- scanning transmission electron microscopy (HAADF-STEM), with the HAADF-STEM work carried out by colleagues in other research groups. The catalytic activity of the catalysts was examined with gas chromatography (GC) and mass spectrometry (MS). The samples characterized in this work include complexes and clusters of second and third row transition metals supported on highly crystalline metal oxides. Specifically, there is a large focus in this work on supported rhodium complexes prepared from the organometallic precursor, Rh(C2H4)2(C5H7O2) and a pre-calcined magnesium oxide (MgO). This specific catalyst is important as not only is it active for olefin hydrogenation at mild temperatures but also there are reports of a unique surface mediated synthesis of uniform rhodium dimers, which are ideal for catalytic comparison of structures with different nuclearities. Reactivities of the MgO-supported rhodium complexes and dimers for carbon monoxide oxidation were investigated with the results showing the dimers were significantly more active for the reaction at 353 K. The stability of the dimers was tested in different reactive conditions with the results showing that under conditions with excess oxygen, the dimers are less stable and less active than under conditions with excess carbon monoxide.A bimetallic catalyst was synthesized on MgO incorporating rhodium and osmium using Rh(C2H4)2 (acac) and Os3(CO)12 as precursors. A unique synthesis method was developed to create a site-isolated segregated bimetallic catalyst with the osmium and rhodium sites acting independently of each other for ethylene hydrogenation at 298 K. The metals remained structurally segregated and catalytically independent even following reduction in H2 at 393 K. Zeolites, another class of highly crystalline supports, were studied to gain information on the support effects in catalysts. The analogous rhodium complexes as were synthesized on the MgO were synthesized on zeolite HY. These catalysts were tested to determine structural and catalytic stability under hydrogen, a reducing gas, and CO, a catalyst poison, with the results showing that, as compared to the complexes on zeolite HY, MgO-supported rhodium complexes form more uniform stable clusters under H2 and develop unique catalytic properties, selectivity for partial hydrogenation of dienes, when exposed to CO. Another zeolite, KLTL, was studied with supported platinum complexes synthesized from the salt precursor, Pt(NH3)4(NO3)2. This catalyst was oxidized at 633K to form supported single-atom platinum complexes. Both the as-prepared Pt(NH3)4 and oxidized PtOx complexes were analyzed structurally and studied as catalysts for CO oxidation. The oxidized platinum complexes proved to have significantly higher activity for CO oxidation at 423 K. Furthermore, HAADF-STEM was used to directly identify the locations of the platinum atoms in the pores of the zeolite before and after oxidative treatment, providing a method of ex-situ tracking of supported metal atoms.
Download or read book Application of Transition Metal Catalysts in Organic Synthesis written by L. Brandsma and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Homogeneous catalysis is an important strategy for the synthesis of high-valued chemicals. L. Brandsma has carefully selected and checked the experimental procedures illustrating the catalytic use of copper, nickel, and palladium compounds in organic synthesis. All procedures are on a preparative scale, make economic use of solvents and catalysts, avoid toxic substances and have high yields.
Download or read book Preparation of Catalysts VII written by R. Maggi and published by Elsevier. This book was released on 1998-08-17 with total page 1007 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the VIIth International Symposium on the Scientific Bases for the Preparation of Heterogeneous Catalysts, are in line with the general scope of this series of events. Emphasis in all Symposia has been on the scientific aspects of the preparation of new and industrial catalysts, or on new methods of preparation, rather than on the catalytic reactions in which such solids are ultimately used. In the present context, the catalytic event itself has only been considered as another, though often decisive, method of catalyst characterization.
