Catalytic Reduction Of Carbon Dioxide To Methane And Other Species Via Formamide Intermediation Synthesis And Hydrogenation Of Hc O Nh2 In The Presence Of Ir Cl Co Ph3p 2
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Catalytic Reduction Of Carbon Dioxide To Methane And Other Species Via Formamide Intermediation Synthesis And Hydrogenation Of Hc O Nh2 In The Presence Of Ir Cl Co Ph3p 2
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Author : L. Vaska
language : en
Publisher:
Release Date : 1988
Catalytic Reduction Of Carbon Dioxide To Methane And Other Species Via Formamide Intermediation Synthesis And Hydrogenation Of Hc O Nh2 In The Presence Of Ir Cl Co Ph3p 2 written by L. Vaska and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
Formamide, HC(O)NH2, is catalytically synthesized from Carbon dioxide, Hydrogen and Ammonia in homogeneous toluene or alcohol solutions mediated by Ir(Cl)(CO)(Ph3P)2. The same iridium compound is used in the catalytic hydrogenation of neat formamide which leads to methane and N-methylformamides. The latter overall reaction is complicated due to the concurrent thermal decomposition of formamide yielding carbon black, NH3, Carbon monoxide, CO2, and water. The various possible steps in this complex catalytic system are briefly examined. Keywords: Trans-chlorocarbonylbis(triphenylphosphine)iridium. (aw).
Carbon Dioxide To Chemicals And Fuels
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Author : Aulice Scibioh
language : en
Publisher: Elsevier
Release Date : 2018-01-02
Carbon Dioxide To Chemicals And Fuels written by Aulice Scibioh and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-01-02 with Technology & Engineering categories.
Carbon Dioxide to Chemicals and Fuels provides a snapshot of the present status of this rapidly growing field, examining ongoing breakthroughs in research and development, motivations, innovations and their respective impacts and perspectives. It also covers in detail the existing technical barriers to achieving key goals in this area. This book details the various methods, both currently available and potential, for conversion of CO2 into fuels and chemicals. With explanation of concepts and their applications, Carbon Dioxide to Chemicals and Fuels offers an interdisciplinary approach that draws on and clarifies the most recent research trends. Explains the fundamental aspects of CO2 utilization Provides recent developments in CO2 utilization for the production of chemicals Answers the questions surrounding why some processes have not commercialized Discusses and analyses in detail many available catalytic conversion methods
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1989-02
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989-02 with Science categories.
Transformation Of Carbon Dioxide To Formic Acid And Methanol
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Author : Wan-Hui Wang
language : en
Publisher: Springer
Release Date : 2017-10-26
Transformation Of Carbon Dioxide To Formic Acid And Methanol written by Wan-Hui Wang and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-26 with Science categories.
This brief explains the principles and fundamentals of carbon dioxide utilization and highlights the transformation to fuels and value-added chemicals such as formic acid and methanol. It is divided into six chapters, including an introduction to the basics of CO2 utilization and transformation of CO2 to formic acid and methanol with homogeneous and heterogeneous catalysts, respectively. The brief will appeal to a wide readership of academic and industrial researchers focusing on homogeneous and heterogeneous catalysis, organometallic chemistry, green chemistry, energy conversion and storage.
Co2 Hydrogenation Catalysis
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Author : Yuichiro Himeda
language : en
Publisher: John Wiley & Sons
Release Date : 2021-03-30
Co2 Hydrogenation Catalysis written by Yuichiro Himeda and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-03-30 with Technology & Engineering categories.
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.
Photocatalytic Conversion Of Methane And Reduction Of Co2 With H2o
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Author : Xiang Yu
language : en
Publisher:
Release Date : 2019
Photocatalytic Conversion Of Methane And Reduction Of Co2 With H2o written by Xiang Yu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Photocatalysis is one of the key technologies for clean energy and environmental applications. The number of applications based on photocatalysis has increased dramatically for the past two decades. Photocatalytic activation of C-H bonds is an emerging field. Methane is a promising source of energy with a huge reserve and is considered to be one of the alternatives to non-renewable petroleum resources because it can be converted to valuable hydrocarbon feedstocks and hydrogen through appropriate reactions. However, due to its high stability, high energy is usually consumed for its conversion, which remains a problem to be solved. Methane conversion and reaction mechanism occurring on metal-heteropolyacid-titania nanocomposites were investigated in Chapters 3 and 4. Oxidation of methane has been carried out for more than a century. Since oxygen is a very reactive molecule, methane can react very rapidly with molecular oxygen and is prone to total oxidation till CO2. Therefore, it is difficult to obtain a desired product with high yield and high selectivity. We report here direct and selective photocatalytic highly-selective oxidation of methane to carbon monoxide under ambient conditions. The composite catalysts on the basis of zinc, tungstophosphoric acid and titania exhibit exceptional performance in this reaction, high carbon monoxide selectivity and quantum efficiency of 7.1% at 362 nm. The reaction is consistent with the Mars-Van Krevelen type sequence and involves formation of the surface methoxy-carbonates as intermediates and zinc oxidation-reduction cycling. In the past few decades, extensive research has focused on the direct conversion of methane to alcohols or higher hydrocarbons. The current processes of converting methane to alcohols or olefins are complex and expensive, because they require an intermediate step of reforming methane to syngas. Although the direct conversion of methane to more valuable products has significant environmental and potential commercial value, there is no commercial scale process available. We uncovered highly selective (>90%) quantitative photochemical direct conversion of methane to ethane at ambient temperature over silver-heteropolyacid-titania nanocomposites. The ethane yield from methane reaches 9 % on the optimized materials. High quantum efficiency, high selectivity and significant yield of ethane combined with excellent stability are major advantages of methane quantitative synthesis from methane using the photochemical looping approach. The rise in atmospheric carbon dioxide and the depletion of fossil fuel reserves have raised serious concerns about the subsequent impact of CO2 on the global climate and future energy supply. The use of abundant solar energy to convert carbon dioxide into fuel, such as carbon monoxide, methane or methanol, solves both problems simultaneously and provides a convenient method of energy storage. Chapter 5 addresses a new efficient catalyst for selective CO2 to CO conversion. The zinc containing phosphotungstic acid-titania nanocomposites exhibited exceptional high activity reaching 50 μmol CO/g·h and selectivity (73%) in the CO2 photocatalytic reduction to CO in the presence of water. The in-situ IR experiments suggest that reaction involves zinc bicarbonates containing hydroxyl groups. The decomposition of these zinc bicarbonate species under irradiation leads to the selective production of carbon monoxide and oxygen. In photocatalytic reactions, the difference in catalyst morphology usually has a significant effect on the photocatalytic performance. Chapter 6 studied the effect of monoclinic bismuth vanadate (BiVO4) crystals with controlled ratio of {010} and {110} facets for photocatalytic reduction of CO2 by H2O. The reaction under irradiation is significantly enhanced by selective photo-deposition of Cu and Co co-catalysts over different facets providing Z-scheme charge flow.
Government Reports Annual Index
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Author :
language : en
Publisher:
Release Date : 1989
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1989 with Government reports announcements & index categories.
Carbon Dioxide Reduction Via Homogeneous Catalytic Synthesis And Hydrogenation Of N N Dimethylformamide
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Author : Serge Schreiner
language : en
Publisher:
Release Date : 1988
Carbon Dioxide Reduction Via Homogeneous Catalytic Synthesis And Hydrogenation Of N N Dimethylformamide written by Serge Schreiner and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with categories.
The previously reported catalytic reaction between CO2, H2, and (CH3)2NH to yield N, N-dimethylformamide (DMF) has been found to produce also trimethylamine (TMA) in the presence of several Ru, Os, Rh, Ir and Pt complexes. In separate experiments, the hydrogenation of DMF, catalyzed by the same or other complexes, also gave TMA. Thus, evidence is presented for the overall catalytic reduction of CO2 the the methyl group ( -CH3, incorporated in TMA). Keywords: Carbon dioxide, Hydrogenation, Homogeneous catalysis, N, N Dimethylformamide, Ethyl radicals.
Hydrogen Transfer Reactions
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Author : Gabriela Guillena
language : en
Publisher: Springer
Release Date : 2016-09-27
Hydrogen Transfer Reactions written by Gabriela Guillena and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-27 with Science categories.
The series Topics in Current Chemistry Collections presents critical reviews from the journal Topics in Current Chemistry organized in topical volumes. The scope of coverage is all areas of chemical science including the interfaces with related disciplines such as biology, medicine and materials science. The goal of each thematic volume is to give the non-specialist reader, whether in academia or industry, a comprehensive insight into an area where new research is emerging which is of interest to a larger scientific audience. Each review within the volume critically surveys one aspect of that topic and places it within the context of the volume as a whole. The most significant developments of the last 5 to 10 years are presented using selected examples to illustrate the principles discussed. The coverage is not intended to be an exhaustive summary of the field or include large quantities of data, but should rather be conceptual, concentrating on the methodological thinking that will allow the non-specialist reader to understand the information presented. Contributions also offer an outlook on potential future developments in the field.
Total Synthesis Of Natural Products
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Author : Jie Jack Li
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-03-14
Total Synthesis Of Natural Products written by Jie Jack Li and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-14 with Science categories.
'Total Synthesis of Natural Products' is written and edited by some of today's leaders in organic chemistry. Eleven chapters cover a range of natural products, from steroids to alkaloids. Each chapter contains an introduction to the natural product in question, descriptions of its biological and pharmacological properties and outlines of total synthesis procedures already carried out. Particular emphasis is placed on novel methodologies developed by the respective authors and their research groups. This text is ideal for graduate and advanced undergraduate students, as well as organic chemists in academia and industry.