Download or read book Relationship Between Iron Oxide Phase and Catalytic Activity in Model Compound Reaction Studies written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Inexpensive catalysts for coal liquefaction must be developed if this process is to become economically viable. Recent emphasis has been on the use of iron-based catalysts, either in the form of nanometer-sized oxides and sulfides, or organic or water soluble compounds which have been used to impregnate the coal with dispersed iron species. In almost all cases the active form of the iron catalyst has been generated in-situ at reaction conditions in the presence of sulfur. Observation of enhanced activity with the use of sulfur and the appearance of iron-sulfides both during and after the liquefaction reactions have led to the suggestion that an iron-sulfide is the catalytically active species. In this study we investigated the effect of iron-oxyhydroxide catalyst precursor phase on the bond scission ability of the catalysts produced in-situ in the presence of sulfur with the model compounds naphthyl bibenzylmethane (NBBM), bibenzyl (BB), diphenylmethane (DPM) and dibenzothiophene (DBT). The catalyst precursors investigated were ferric oxyhydroxysulfate (OHS), goethite ([alpha]-FeOOH), akaganeite ([beta]-FeOOH) and six-line ferrihydrite. These precursors were chosen for their enhanced activity for carbon-carbon bond scission with NBBM over other iron-oxyhydroxides and iron-oxides. The reactions of these catalyst precursors with the model compounds were investigated both with and without a hydrogen-donating solvent.
Download or read book Metal Nanoparticles for Catalysis written by Franklin Tao and published by Royal Society of Chemistry. This book was released on 2014-06-12 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalysis is a central topic in chemical transformation and energy conversion. Thanks to the spectacular achievements of colloidal chemistry and the synthesis of nanomaterials over the last two decades, there have also been significant advances in nanoparticle catalysis. Catalysis on different metal nanostructures with well-defined structures and composition has been extensively studied. Metal nanocrystals synthesized with colloidal chemistry exhibit different catalytic performances in contrast to metal nanoparticles prepared with impregnation or deposition precipitation. Additionally, theoretical approaches in predicting catalysis performance and understanding catalytic mechanism on these metal nanocatalysts have made significant progress. Metal Nanoparticles for Catalysis is a comprehensive text on catalysis on Nanoparticles, looking at both their synthesis and applications. Chapter topics include nanoreactor catalysis; Pd nanoparticles in C-C coupling reactions; metal salt-based gold nanocatalysts; theoretical insights into metal nanocatalysts; and nanoparticle mediated clock reaction. This book bridges the gap between nanomaterials synthesis and characterization, and catalysis. As such, this text will be a valuable resource for postgraduate students and researchers in these exciting fields.
Download or read book Mechanisms of Iron based Catalysis Investigated Using Model Compounds written by and published by . This book was released on 1994 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: The catalytic mechanism of highly active, nanophase, iron-based coal liquefaction catalysts was investigated using a series of model compounds. The iron-oxide phases ferric oxyhydroxysulfate (OHS), 6-line ferrihydrite, hematite, and goethite, were evaluated as catalyst precursors with systematically substituted diphenylmethanes in the presence of a hydrogen donating solvent. The activity of the catalysts was observed to be dependent upon the functionality on the model compounds. The results of these model compound studies and their relationship to possible reaction mechanisms are presented.
Download or read book Recent Advances in Complex Functional Materials written by Elson Longo and published by Springer. This book was released on 2017-07-12 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book we explore new approaches to understanding the physical and chemical properties of emergent complex functional materials, revealing a close relationship between their structures and properties at the molecular level. The primary focus of this book is on the ability to synthesize materials with a controlled chemical composition, a crystallographic structure, and a well-defined morphology. Special attention is also given to the interplay of theory, simulation and experimental results, in order to interconnect theoretical knowledge and experimental approaches, which can reveal new scientific and technological directions in several fields, expanding the versatility to yield a variety of new complex materials with desirable applications and functions. Some of the challenges and opportunities in this field are also discussed, targeting the development of new emergent complex functional materials with tailored properties to solve problems related to renewable energy, health, and environmental sustainability. A more fundamental understanding of the physical and chemical properties of new emergent complex functional materials is essential to achieving more substantial progress in a number of technological fields. With this goal in mind, the editors invited acknowledged specialists to contribute chapters covering a broad range of disciplines.
Download or read book 7th International Conference on Coal Science written by K. H. Michaelian and published by . This book was released on 1993 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1994-03 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Heterogeneous Catalytic Redox Reactions written by Vladislav Sadykov and published by Walter de Gruyter GmbH & Co KG. This book was released on 2019-10-21 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt: The current book brings together cutting-edge research in the area of heterogeneous catalytic redox processes. The first part of the book covers the catalytic properties of transition metal oxides and the techniques for catalysts preparation, such as mechanochemistry, plasmochemistry, hydrothermal treatment, etc. Further the authors focus on mechanisms of heterogeneous redox reactions followed by the overview of industrial applications.
Download or read book Spectroscopic Properties of Inorganic and Organometallic Compounds written by G Davidson and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spectroscopic Properties of Inorganic and Organometallic Compounds provides a unique source of information on an important area of chemistry. Divided into sections mainly according to the particular spectroscopic technique used, coverage in each volume includes: NMR (with reference to stereochemistry, dynamic systems, paramagnetic complexes, solid state NMR and Groups 13-18); nuclear quadrupole resonance spectroscopy; vibrational spectroscopy of main group and transition element compounds and coordinated ligands; and electron diffraction. Reflecting the growing volume of published work in this field, researchers will find this Specialist Periodical Report an invaluable source of information on current methods and applications. Specialist Periodical Reports provide systematic and detailed review coverage in major areas of chemical research. Compiled by teams of leading experts in their specialist fields, this series is designed to help the chemistry community keep current with the latest developments in their field. Each volume in the series is published either annually or biennially and is a superb reference point for researchers. www.rsc.org/spr
Download or read book Bibliography of Solid Adsorbents 1943 to 1953 written by Victor Reuel Deitz and published by . This book was released on 1956 with total page 1538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1981 with total page 886 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1973-04 with total page 1508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Catalysis in Application written by D Lennon and published by Royal Society of Chemistry. This book was released on 2007-10-31 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although catalysts are responsible for the manufacture and processing of a number of products in daily use, the subject of catalysis is still very much in its infancy, and the complexity of the processes still present major challenges. Catalysis in Application presents a snapshot of the most up-to-date developments in the field of applied catalysis. Coverage is principally in the areas of hydrogenation, dehydrogenation, chiral catalysis, environmental catalysis and catalyst deactivation, combining a unique mix of chemistry and chemical engineering. With its wide-ranging coverage, this book will be a welcome addition to the shelves of every practitioner in catalysis, both in industry and academia.
Download or read book List of Journal Articles by Bureau of Mines Authors with Subject Index written by United States. Bureau of Mines and published by . This book was released on 1960 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book List of Journal Articles by Bureau of Mines Authors Published July 1 1910 to January 1 1960 with Subject Index written by United States. Bureau of Mines and published by . This book was released on 1960 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book OAR Cumulative Index of Research Results written by and published by . This book was released on 1967 with total page 1264 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Iron Oxides written by Rochelle M. Cornell and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together in one, compact volume all aspects of the available information about the iron oxides. It presents a coherent, up to date account of the properties, reactions and mechanisms of formation of these compounds. In addition, there are chapters dealing with iron oxides in rocks and soils, as biominerals and as corrosion products together with methods of synthesis and the numerous application of these compounds. Their role in the environment is also discussed. The authors are experts in the field of iron oxides and have worked on all the topics covered. Much recent data from the authors' own laboratories is included and opportunities for further research are indicated. Special features are the electron micrographs and colour plates together with the many different spectra used to illustrate properties and aspects of behaviour. Numerous tables and graphs enable trends and relationships to be seen at a glance. The book concludes with an extensive bibliography. This book should prove invaluable to industry and to all researchers who, whatever their background and level of experience, are interested in this rapidly expanding field. It is an essential volume for any scientific library and is now in its second, completely revised and extended edition!
