Download or read book Synthesis Titanium Containing Structure Catalyst and Their Catalytic Activity in Oxidation of Alkenes written by Noorulsyahidaini Golbaha and published by . This book was released on 2010 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book MWW Type Titanosilicate written by Peng Wu and published by Springer. This book was released on 2013-08-20 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of a new generation of selective oxidation titanosilicate catalysts with the MWW topology (Ti-MWW) based on the research achievements of the past 12 years. It gives an overview of the synthesis, structure modification and catalytic properties of Ti-MWW. Ti-MWW can readily be prepared by means of direct hydrothermal synthesis with crystallization-supporting agents, using dual-structure-directing agents and a dry-gel conversion technique. It also can be post-synthesized through unique reversible structure transformation and liquid-phase isomorphous substitution. The structural conversion of Ti-MWW into the materials usable for processing large molecules is summarized. Taking advantage of the structure diversity of the lamellar precursor of Ti-MWW, it can be fully or partially delaminated, and undergo interlayer silylation to obtain a novel structure with larger porosity. In the selective oxidation (alkene epoxidation and ketone/aldehyde ammoximation) with hydrogen peroxide or organic peroxide as an oxidant, the unique catalytic properties of Ti-MWW are described in comparison to conventional titanosilicates such as TS-1 and Ti-Beta.
Download or read book MWW Type Titanosilicate written by Peng Wu and published by Springer Science & Business Media. This book was released on 2013-08-04 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive review of a new generation of selective oxidation titanosilicate catalysts with the MWW topology (Ti-MWW) based on the research achievements of the past 12 years. It gives an overview of the synthesis, structure modification and catalytic properties of Ti-MWW. Ti-MWW can readily be prepared by means of direct hydrothermal synthesis with crystallization-supporting agents, using dual-structure-directing agents and a dry-gel conversion technique. It also can be post-synthesized through unique reversible structure transformation and liquid-phase isomorphous substitution. The structural conversion of Ti-MWW into the materials usable for processing large molecules is summarized. Taking advantage of the structure diversity of the lamellar precursor of Ti-MWW, it can be fully or partially delaminated, and undergo interlayer silylation to obtain a novel structure with larger porosity. In the selective oxidation (alkene epoxidation and ketone/aldehyde ammoximation) with hydrogen peroxide or organic peroxide as an oxidant, the unique catalytic properties of Ti-MWW are described in comparison to conventional titanosilicates such as TS-1 and Ti-Beta.
Download or read book Synthesis of Titanium Catalyst Containing Polystyrene and Its Catalytic Activity in Epoxidation of 1 octene with Using Hydrogen Peroxide written by Mohd. Hayrie Mohd. Hatta and published by . This book was released on 2011 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modern Heterogeneous Oxidation Catalysis written by Noritaka Mizuno and published by John Wiley & Sons. This book was released on 2009-11-18 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Filling a gap in the current literature, this comprehensive reference presents all important catalyst classes, including metal oxides, polyoxometalates, and zeolites. Readers will find here everything they need to know -- from structure design to characterization, and from immobilization to industrial processes. A true must-have for anyone working in this key technology.
Download or read book Structure and Reactivity of Metals in Zeolite Materials written by Joaquín Pérez Pariente and published by Springer. This book was released on 2018-09-12 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides the reader with the most up-to-date and relevant knowledge on the reactivity of metals located in zeolite materials, either in framework or extra-framework positions, and the way it is connected with the nature of the chemical environment provided by the host. Since the first report of the isomorphous substitution of titanium in the framework of zeolites giving rise to materials with unusual catalytic properties, the incorporation of many other metals have been investigated with the aim for developing catalysts with improved performance in different reactions. The continuous expansion of the field, both in the variety of metals and zeolite structures, has been accompanied by an increasing focus on the relationship between the reactivity of metal centers and their unique chemical environment. The concepts covered in this volume are of interest to people working in the field of inorganic and physical chemistry, catalysis and chemical engineering, but also for those more interested in theoretical approaches to chemical reactivity. In particular the volume is useful to postgraduate students conducting research in the design, synthesis and catalytic performance of metal-containing zeolites in both academic and application contexts.
Download or read book Novel Single site Titanosilicates with Targeted Connectivity and Nuclearity of Titanium IV written by Nan Chen and published by . This book was released on 2012 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Titanosilicates are a family of porous materials that have shown excellent catalytic activity in olefin epoxidation and many other selective oxidation reactions. These materials have been extensively studied in the past few decades. One of the central questions in these investigations has been to define the catalytically active centers. The traditional synthesis of wet impregnation followed by calcination often produces more than one type of catalytic center within the same matrix, i.e. different coordination, connectivity and nuclearity. Each type potentially possesses unique catalytic activity. Co-existence of multiple catalytic centers makes it impossible to establish the relationship between the structure of titanium center and catalytic activity. The goal of this research was to establish a structure-function relationship in titanosilicate materials through targeted synthesis of single-site nanostructured catalysts, in which titanium centers are isolated from one another while possessing the uniform structure. A building block synthetic methodology was utilized to prepare a series of catalysts, namely 2-connected (2C), 3-connected (3C), 4-connected (4C) and tetranuclear (Ti4 [subscript 4]) titanium catalysts. These materials were characterized in detail via gravimetric analysis, solid state NMR, diffuse reflectance UV spectroscopy, infrared spectroscopy, BET surface area and X-ray absorption spectroscopy (XANES and EXAFS). Catalytic activity of each catalyst was examined in the oxidation of 2, 3, 6-trimethylphenol with aqueous hydrogen peroxide to give the corresponding benzoquinone. Under identical conditions, high to mediocre catalytic activity has been observed in a sequence of Ti4 [subscript 4]> 2C> 3C H"4C, in terms of both conversion and selectivity. All synthesized catalysts showed excellent stability and recyclability with aqueous hydrogen peroxide at elevated temperature. A structure-function relationship was therefore developed through targeted synthesis of novel single-site titanosilicate catalysts.
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.
Download or read book Frontiers of Green Catalytic Selective Oxidations written by Konstantin P. Bryliakov and published by Springer Nature. This book was released on 2019-10-02 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt: The demand for novel efficient and environmentally sustainable chemo, regio- and stereoselective catalyst systems for the oxidation of organic substrates is continuously growing in line with toughening economic and environmental constraints. This book addresses these issues; it consists of eleven chapters written by world-recognized experts in green and sustainable oxidation catalysis. The most urgent and challenging topics, in the judgment of the editor, such as green asymmetric epoxidations, sulfoxidatiuons, C–H oxidations; oxidation catalysis by polyoxometalates and oxidations in non-conventional solvents, etc. have been critically reviewed in this book. Both fundamental aspects, such as catalysts design, catalytic properties, nature of catalytically active sites and reaction mechanisms, and practical outlook of the oxidations have been addressed by the authors. The book appeals to a broad readership, particularly graduate students, employees of universities and research organizations, and industrial researchers, particularly those working in the areas of homogeneous oxidation catalysis, asymmetric synthesis, organocatalysis, sustainable catalytic processes and green chemistry, mechanisms of catalytic reactions, synthesis of bioactive compounds, biomimetic chemistry, etc. Konstantin Bryliakov is Leading Researcher at the Boreskov Institute of Catalysis. In 2016, he was elected Honorary Professor of the Russian Academy of Sciences.
Download or read book Synthesis of Solid Catalysts written by Krijn P. de Jong and published by John Wiley & Sons. This book was released on 2009-06-22 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt: This practical book combines recent progress with a discussion of the general aspects of catalyst preparation. The first part deals with the basic principles of solid catalyst preparation, explaining the main aspects of sol-gel chemistry and interfacial chemistry, followed by such techniques as co-precipitation and immobilization. New tools for catalyst preparation research, including microspectroscopy and high-throughput experimentation, are also taken into account. The second part heightens the practical relevance by providing six case studies on such topics as the preparation of zeolites, hydrotreating catalysts, methanol catalysts and gold catalysts
Download or read book Advances in Catalysis written by and published by Academic Press. This book was released on 1996-07-26 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since 1948, this Series has filled the gap between the papers that report and the textbooks that teach in the diverse areas of catalysis research. The editors of and contributors to Advances in Catalysis are dedicated to recording progress in this area. Each volume of Advances in Catalysis contains articles covering a subject of broad interest.
Download or read book Crystalline Metal Oxide Catalysts written by Wataru Ueda and published by Springer Nature. This book was released on 2022-10-26 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces the innovatively advanced crystalline metal oxide catalysts that have multi-catalytic functions on the basis of spatially placed elements in crystal structure. With authors who are experts in their fields, the chapters of the book are organized according to catalytic function, on the basis of crystal structure. The book also covers the structure determination of micro–nano-sized metal oxide crystals that are now standard in most catalytic materials and new trends in catalyst development using materials informatics and catalytic informatics. The information contained here will guide researchers who are eager to carry out sustainable catalytic processes and ultimately to achieve a sustainable society in their quest for catalyst development.
Download or read book Synthesis of Titanium Containing Aluminophosphate Molecular Sieve in Catalytic Oxidation of Styrene written by Nurliana Roslan and published by . This book was released on 2012 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Design and Applications of Novel Titanium and Copper Containing Mesoporous Organic inorganic Hybrid Materials written by Ruth Ballesteros Gómez and published by Librería-Editorial Dykinson. This book was released on 2011-03-24 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Different titanium-containing hybrid mesoporous materials have been successfully synthesized from cyclopentadienyl or alkoxo titanium derivatives as titanium sources. The immobilization of the titanium complex has been carried out by grafting or tethering method in order to compare the catalytic performance of each process. Furthermore, two different capped agents have been used to silylate the support surface in order to increase the hydrophobic character of the final catalyst. In chapter 6 it would be evaluated if the choice of the capped agent employed has consequences in the activity of the catalyst in determined epoxidation reactions.
Download or read book Synthesis Caracterization and Catalytic Properties of Titanium containing Molecular Sieves written by Cristina Carmela Ferrini and published by . This book was released on 1993 with total page 167 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Zeolites and Catalysis written by Jiri Cejka and published by John Wiley & Sons. This book was released on 2010-05-27 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt: This indispensable two-volume handbook covers everything on this hot research field. The first part deals with the synthesis, modification, characterization and application of catalytic active zeolites, while the second focuses on such reaction types as cracking, hydrocracking, isomerization, reforming and other industrially important topics. Edited by a highly experienced and internationally renowned team with chapters written by the "Who's Who" of zeolite research.
Download or read book Olefin Polymerization written by Walter Kaminsky and published by Wiley-VCH. This book was released on 2006-08-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: With an enormous velocity, olefin polymerization has expanded to one of the most significant fields in polymers since the first industrial use about 50 years ago. In 2005, 100 million tons of polyolefins were produced - the biggest part was catalyzed by metallorganic compounds. The Hamburg Macromolecular Symposium 2005 with the title "Olefin Polymerization" involved topics such as new catalysts and cocatalysts, kinetics, mechanism and polymer reaction engineering, synthesis of special polymers, and characterization of polyolefins. The conference combined scientists from different disciplines to discuss latest research results of polymers and to offer each other the possibility of cooperation. This is reflected in this volume, which contains invited lectures and selected posters presented at the symposium.
