Download or read book Co Hydrogenation Over Ni Cs SiO2 Catalysts written by Kyriakos Tzanidis and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO Hydrogenation Over Ru Cs SiO2 Catalysts written by A. A. Moman and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO Hydrogenation Over Ni SiO2 Catalysts Calcined at Different Temperatures written by O. Van Kollenburg and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO Hydrogenation Over Ru Mn SiO2 Catalysts written by K. Fatolas and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO Hydrogenation Over Ru Cu SiO2 Catalysts written by Alwin S. Verbrugge and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Co Hydrogenation Over Ru Co SiO2 Catalysts written by F. Gascoin and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO Hydrogenation Over Ru Rb SiO2 Catalysts written by S. Tungkamani and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Elucidating the CO Hydrogenation Mechanism Over Cobalt Based Catalysts Using Chemical Transient Kinetics written by Motahare Athariboroujeny and published by . This book was released on 2019 with total page 207 pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation presents research performed to advance the fundamental knowledge of the mechanism of the catalytic CO hydrogenation according to the Fischer-Tropsch synthesis. Despite extensive studies on the reaction mechanism, a detailed understanding of the relevant steps is still lacking. Quantitative Chemical Transient Kinetics (CTK) informs us of how the reaction proceeds while the catalytically active phase is being built up. Among the proposed mechanisms, C-C coupling and CO-insertion remain the two main suggested mechanisms. The present work scrutinizes which of these suggestions are compatible with the CTK evidence.We illustrate the importance of surface coverage and support effects. Important mechanistic information is obtained from delay time analysis of the products relative to that of the reactants, provided by CTK. We show that the activated Co/MnOx surface does not provide metallic sites under steady-state conditions. A CO-insertion mechanism occurs at high coverages, while at lower coverages C-C coupling between CHx species can occur. The chemical nature along with the surface coverages yet depend on the H2/CO ratio. For low such ratios, the CO-insertion mechanism dominates, involving formate-derived surface species. Specifically, CO hydrogenation towards methane at different H2/CO ratios shows that two mechanisms co-exist; hydrogenation of formate species when the surface is covered and CHx hydrogenation when the surface still provides metallic sites. Microscopy (TEM) and spectroscopy (XPS) analyses support the CTK conclusions. Some carbon can penetrate the Co surface and induce cobalt carbide formation. We performed CTK analyses with pure Co and Co/TiOx, for comparison purposes. The catalytically active surface is shown to be different for these catalysts. We also compare CTK results of the CO hydrogenation with those of methyl formate (MF) hydrogenation. MF is selected as it contains a formate group and forms methoxy during dissociative adsorption on the surface. Such methoxy species are claimed to be important during Fischer-Tropsch synthesis. CTK studies of the support influence are particularly revealing for Co/SiO2 catalysts. Different from all other catalysts addressed here, the surface coverages over Co/SiO2 do not exceed one monolayer capacity. The impact of this finding regarding the reaction mechanism is still to be explored in future work.

Download or read book Plasma Catalysis written by Annemie Bogaerts and published by MDPI. This book was released on 2019-04-02 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma catalysis is gaining increasing interest for various gas conversion applications, such as CO2 conversion into value-added chemicals and fuels, N2 fixation for the synthesis of NH3 or NOx, methane conversion into higher hydrocarbons or oxygenates. It is also widely used for air pollution control (e.g., VOC remediation). Plasma catalysis allows thermodynamically difficult reactions to proceed at ambient pressure and temperature, due to activation of the gas molecules by energetic electrons created in the plasma. However, plasma is very reactive but not selective, and thus a catalyst is needed to improve the selectivity. In spite of the growing interest in plasma catalysis, the underlying mechanisms of the (possible) synergy between plasma and catalyst are not yet fully understood. Indeed, plasma catalysis is quite complicated, as the plasma will affect the catalyst and vice versa. Moreover, due to the reactive plasma environment, the most suitable catalysts will probably be different from thermal catalysts. More research is needed to better understand the plasma–catalyst interactions, in order to further improve the applications.

Download or read book Co Hydrogenation Over Ni Mo Bimetallic Catalyst Supported on Silica written by Jackson Mulenga Chitanda and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Methanol Synthesis written by Jerzy Skrzypek and published by . This book was released on 1994 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CO Hydrogenation Over Silica Supported Nickel manganese Catalysts written by Arwa M. Shadeed and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Mechanism of CO Hydrogenation on Promoted Rhodium Catalysts written by Franciscus Gondulfus Antonius van den Berg and published by . This book was released on 1983 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Organometallic Chemistry of the Transition Metals written by Robert H. Crabtree and published by John Wiley & Sons. This book was released on 2005-06-14 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fully updated and expanded to reflect recent advances, this Fourth Edition of the classic text provides students and professional chemists with an excellent introduction to the principles and general properties of organometallic compounds, as well as including practical information on reaction mechanisms and detailed descriptions of contemporary applications.

Download or read book Catalytic Hydrogenation and Reduction written by Edward Bradford Maxted and published by . This book was released on 1919 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxygenates by Homologation or CO Hydrogenation with Metal Complexes written by A. Braca and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Born and initially developed in various industrial laboratories, mainly in U.S.A. and Gennany, homogeneous phase catalytic carbon monoxide hydrogenation and alcohols and their derivatives carbonylation and homologation, have generally been considered and reviewed separately in the course of their 40 years history without concern for common aspects in the chemical transfonnations and in catalysis. Thanks to researchers of Japanese companies participating in the National C 1 Chemistry Project (1980-1987) the scientific and technical approaches in this field have been unified and applied in parallel, in the light of some common aspects of the chemical reactions and mechanisms. Now, at a moment when research seems becahned, a general presentation and discussion of the most recent topics might be an useful basis for further development of this chemistry. To delimit and simplify the discussion of the chemical aspects and the nature of the catalysts involved, the present review is limited to reactions employing homogeneous metal complexes for the direct conversion of syngas to oxygenates and to the hydrocarbonylation of these last to homologous derivatives. Since the previous practically contemporary reviews by Dombek [in Adv. Organomet. Chern. (1983)] on CO hydrogenation and by the present authors [in Asp.Homog.Catal.(Reidel Pu.l984)] on alcohol homologation fully cover the literature up to 1982, here we mainly refer to work done after 1982, and consider the cited reviews as covering the historical development of research in the 1940- 1980 period.

Download or read book CO2 Hydrogenation Catalysis written by Yuichiro Himeda and published by John Wiley & Sons. This book was released on 2021-03-30 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: A guide to the effective catalysts and latest advances in CO2 conversion in chemicals and fuels Carbon dioxide hydrogenation is one of the most promising and economic techniques to utilize CO2 emissions to produce value-added chemicals. With contributions from an international team of experts on the topic, CO2 Hydrogenation Catalysis offers a comprehensive review of the most recent developments in the catalytic hydrogenation of carbon dioxide to formic acid/formate, methanol, methane, and C2+ products. The book explores the electroreduction of carbon dioxide and contains an overview on hydrogen production from formic acid and methanol. With a practical review of the advances and challenges in future CO2 hydrogenation research, the book provides an important guide for researchers in academia and industry working in the field of catalysis, organometallic chemistry, green and sustainable chemistry, as well as energy conversion and storage. This important book: Offers a unique review of effective catalysts and the latest advances in CO2 conversion Explores how to utilize CO2 emissions to produce value-added chemicals and fuels such as methanol, olefins, gasoline, aromatics Includes the latest research in homogeneous and heterogeneous catalysis as well as electrocatalysis Highlights advances and challenges for future investigation Written for chemists, catalytic chemists, electrochemists, chemists in industry, and chemical engineers, CO2 Hydrogenation Catalysis offers a comprehensive resource to understanding how CO2 emissions can create value-added chemicals.