Download or read book Homogeneous Solution Electrocatalysts for CO2 Reduction written by and published by . This book was released on 1991 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of the research funded by this grant was to develop new electrocatalysts for CO2 reduction, and to probe the fundamental mechanisms of the steps that lead to the reduction of CO2. As the title suggests, this initially involved the synthesis of soluble transition metal complexes. More recently, the inability of the homogeneous catalysts to reduce CO2 past the two- electron stage, and the results of mechanistic studies, led us to investigate heterogeneous systems that could access more than two electron equivalents. Our initial investigations led to the preparation of polypyridyl complexes of ruthenium, osmium, rhenium, iridium, and rhodium.
Download or read book Carbon Dioxide Electrochemistry written by Marc Robert and published by Royal Society of Chemistry. This book was released on 2020-10-14 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conversion of light and electricity to chemicals is an important component of a sustainable energy system. The exponential growth in renewable energy generation implies that there will be strong market pull for chemical energy storage technology in the near future, and here carbon dioxide utilization must play a central role. The electrochemical conversion of carbon dioxide is key in achieving these goals. Carbon Dioxide Electrochemistry showcases different advances in the field, and bridges the two worlds of homogeneous and heterogeneous catalysis that are often perceived as in competition in research. Chapters cover homogeneous and heterogeneous electrochemical reduction of CO2, nanostructures for CO2 reduction, hybrid systems for CO2 conversion, electrochemical reactors, theoretical approaches to catalytic reduction of CO2, and photoelectrodes for electrochemical conversion. With internationally well-known editors and authors, this book will appeal to graduate students and researchers in energy, catalysis, chemical engineering and chemistry who work on carbon dioxide.
Download or read book Investigations of Electrocatalytic Carbon Dioxide Reduction Using Manganese I Homogeneous Molecular Electrocatalysts written by Meaghan Elizabeth Jackson McKinnon and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Homogeneous Electrocatalytic Reduction of Carbon Dioxide to Carbon Monoxide by Ni cyclam written by Jesse Dan Froehlich and published by . This book was released on 2015 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: The homogeneous electrochemical reduction of CO2 by the molecular catalyst [Ni(cyclam)]2+ was studied by electrochemistry and infrared spectroelectrochemistry. This catalyst has been previously shown to have increased CO2 reduction activity when adsorbed on a mercury electrode. The homogeneous reactivity, without a mercury electrode, was often ignored in the literature. Ni(cyclam) was found to efficiently and selectively produce CO at moderate overpotentials in both aqueous and mixed organic solvent systems in a homogenous fashion at an inert glassy carbon electrode. Methylated analogs of Ni(cyclam) were also studied and observed to have more positive reduction potentials and attenuated CO2 reduction activity. The electrochemical kinetics were probed by varying CO2 substrate and proton concentrations. Products of CO2 reduction are observed in infrared spectra obtained from spectroelectrochemical experiments. The two major species observed were a Ni(I) carbonyl, [Ni(cyclam)(CO)]+, and a Ni(II) coordinated bicarbonate, [Ni(cyclam)(CO2OH)]+. The rate-limiting step during electrocatalysis was determined to be CO loss from the deactivated species, [Ni(cyclam)(CO)]+, to produce the active catalyst, [Ni(cyclam)]+. Another macrocyclic complex, [Ni(TMC)]+, was deployed as a CO scavenger in order to inhibit the deactivation of [Ni(cyclam)]+ by CO. Addition of the CO scavenger was shown to dramatically increase the catalytic current observed for CO2 reduction by [Ni(cyclam)]+. Evidence for the [Ni(TMC)]+ acting as a CO scavenger includes the observation of [Ni(TMC)(CO)]+ by IR. Density functional theory calculations, probing the optimized geometry of the [Ni(cyclam)(CO)]+ species, are also presented. These findings have implications on the increased activity for CO2 reduction when [Ni(cyclam)]+ is adsorbed on a mercury electrode. The [Ni(cyclam)(CO)]+ structure has significant distortion of the Ni center out of the plane of the cyclam nitrogens. This distortion strengthens the Ni-CO interaction by increasing back-bonding interactions. This leads to the hypothesis that the mercury surface, through Hg-Ni interactions, prevents the distorted geometry seen in solution leading to a more planar geometry. This helps to destabilize the carbonyl adduct which inhibits the extent of CO poisoning of the catalyst when adsorbed on a mercury electrode. Alternative approaches to prevent CO poisoning without using such a toxic substance as mercury are critical to improving this unique catalytic system.
Download or read book Catalysis in Ionic Liquids written by Chris Hardacre and published by Royal Society of Chemistry. This book was released on 2014-03-20 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although ionic liquids have only been studied in depth during the last decades, the field is now maturing to such a degree that the focus is on larger scale applications for use in real processes such as catalysis. Current information is scattered across the literature and Catalysis in Ionic Liquids provides a critical analysis of the research published to date on ionic solvents in all areas of the catalytic science. The book covers both catalyst synthesis using ionic liquids as solvents and green syntheses using both ionic liquids as well as mixtures of ionic liquids and carbon dioxide (as a subcritical and supercritical liquid), including enzymatic, homogeneous, and heterogeneous catalysis, electrocatalysis and organocatalysis. As well as the catalysis community, the book will also be of interest to postgraduates, postdoctoral workers and researchers in academia and industry working in organic synthesis, new materials synthesis, renewable sources of energy and electrochemistry. Written by leading experts in the field, this is the reference source to find about catalysis in ionic liquids.
Download or read book CO2 Hydrogenation Catalysis written by Yuichiro Himeda and published by John Wiley & Sons. This book was released on 2021-06-28 with total page 322 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.
Download or read book Heterogeneous and Homogeneous Nickel based Electrocatalysts for Oxygen Evolution and Carbon Dioxide Reduction written by Meili Sheng and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrolysis of water to form H2 and O2 and electrocatalytic reduction of CO2 to CO have attracted increasing attention these years. To realize a large-scale production of H2 and CO, it is critical to develop efficient and earth-abundant catalysts that could overcome the slow kinetics of the O2 evolution reaction in water splitting and selectively reduce CO2 over the competing H2 evolution reaction. This thesis describes the synthesis, characterization, and evaluation of nickel-based heterogeneous and homogeneous (molecular) electrocatalysts for water oxidation and CO2 reduction, respectively. The first project describes the Fe incorporated ultrathin Ni(OH)2 nanosheets which exhibit dramatically enhanced performance in electrocatalytic O2 evolution. The second project focus on a molecular Ni complex with a pyridyl biscarbene ligand for electrocatalytic CO2 reduction. Compared to those typical Ni complexes with cyclam-derivatized and/or -analogous tetradentate ligands, our Ni complex showed high selectivity for CO2 reduction over the competing H2 evolution reaction.
Download or read book Electrochemical and Electrocatalytic Reactions of Carbon Dioxide written by B.P. Sullivan and published by Elsevier. This book was released on 2012-12-02 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt: The recycling of atmospheric molecules for use as fuels and chemicals is a goal which can only be achieved through a deeper understanding of catalytic processes, particularly electrocatalysis whereby redox transformations can be interfaced with solar or nuclear energy input. Carbon dioxide is a prototypical small molecule in many regards since it is chemically inert. In addition, because of the likely role of carbon dioxide in global temperature cycles, it will be imperative in the future to regulate the output from industrial processes. The purpose of this book is to present a unified discussion of the carbon dioxide chemistry which is necessary for the understanding and design of electrochemically-driven processes for the reduction of carbon dioxide and to provide an impetus for the further development of electrocatalytic carbon dioxide chemistry.
Download or read book Modern Aspects of Electrochemistry 42 written by Constantinos G. Vayenas and published by Springer Science & Business Media. This book was released on 2008-03-08 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume analyzes and summarizes recent developments in several key interfacial electrochemical systems in the areas of fuel cell electrocatatalysis, electrosynthesis and electrodeposition. The six Chapters are written by internationally recognized experts in these areas and address both fundamental and practical aspects of several existing or emerging key electrochemical technologies. The Chapter by R. Adzic, N. Marinkovic and M. Vukmirovic provides a lucid and authoritative treatment of the electrochemistry and electrocatalysis of Ruthenium, a key element for the devel- ment of efficient electrodes for polymer electrolyte (PEM) fuel cells. Starting from fundamental surface science studies and interfacial considerations, this up-to-date review by some of the pioneers in this field, provides a deep insight in the complex catalytic-electrocatalytic phenomena occurring at the interfaces of PEM fuel cell electrodes and a comprehensive treatment of recent developments in this extremely important field. Several recent breakthroughs in the design of solid oxide fuel cell (SOFC) anodes and cathodes are described in the Chapter of H. Uchida and M. Watanabe. The authors, who have pioneered several of these developments, provide a lucid presentation d- cribing how careful fundamental investigations of interfacial electrocatalytic anode and cathode phenomena lead to novel electrode compositions and microstructures and to significant practical advances of SOFC anode and cathode stability and enhanced electrocatalysis.
Download or read book Novel Materials for Carbon Dioxide Mitigation Technology written by Bryan Morreale and published by Elsevier. This book was released on 2015-06-01 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials for Carbon Dioxide Mitigation Technology offers expert insight and experience from recognized authorities in advanced material development in carbon mitigation technology and constitutes a comprehensive guide to the selection and design of a wide range of solvent/sorbent/catalyst used by scientists globally. It appeals to chemical scientists, material scientists and engineers, energy researchers, and environmental scientists from academia, industry, and government in their research directed toward greener, more efficient carbon mitigation processes. Emphasizes material development for carbon mitigation technologies rather than regulations Provides a fundamental understanding of the underpinning science as well as technological approaches to implement carbon capture, utilization and storage technologies Introduces the driving force behind novel materials, their performance and applications for carbon dioxide mitigation Contains figures, tables and an abundance of examples clearly explaining the development, characterization and evaluation of novel carbon mitigation materials Includes hundreds of citations drawing on the most recent published works on the subject Provides a wealth of real-world examples, illustrating how to bridge nano-scale materials to bulk carbon mitigation properties
Download or read book Electrochemical Reduction of Carbon Dioxide written by Jinli Qiao and published by CRC Press. This book was released on 2016-07-06 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: For Researchers, Students, Industrial Professionals, and ManufacturersElectrochemical Reduction of Carbon Dioxide: Fundamentals and Technologies is your guide to improved catalytic performance in the electrochemical reduction of carbon dioxide (CO2). Written by electrochemical energy scientists actively involved in environmental research and develo
Download or read book Photo and Electro Catalytic Processes written by Jianmin Ma and published by John Wiley & Sons. This book was released on 2022-01-25 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explore green catalytic reactions with this reference from a renowned leader in the field Green reactions—like photo-, photoelectro-, and electro-catalytic reactions—offer viable technologies to solve difficult problems without significant damage to the environment. In particular, some gas-involved reactions are especially useful in the creation of liquid fuels and cost-effective products. In Photo- and Electro-Catalytic Processes: Water Splitting, N2 Fixing, CO2 Reduction, award-winning researcher Jianmin Ma delivers a comprehensive overview of photo-, electro-, and photoelectron-catalysts in a variety of processes, including O2 reduction, CO2 reduction, N2 reduction, H2 production, water oxidation, oxygen evolution, and hydrogen evolution. The book offers detailed information on the underlying mechanisms, costs, and synthetic methods of catalysts. Filled with authoritative and critical information on green catalytic processes that promise to answer many of our most pressing energy and environmental questions, this book also includes: Thorough introductions to electrocatalytic oxygen reduction and evolution reactions, as well as electrocatalytic hydrogen evolution reactions Comprehensive explorations of electrocatalytic water splitting, CO2 reduction, and N2 reduction Practical discussions of photoelectrocatalytic H2 production, water splitting, and CO2 reduction In-depth examinations of photoelectrochemical oxygen evolution and nitrogen reduction Perfect for catalytic chemists and photochemists, Photo- and Electro-Catalytic Processes: Water Splitting, N2 Fixing, CO2 Reduction also belongs in the libraries of materials scientists and inorganic chemists seeking a one-stop resource on the novel aspects of photo-, electro-, and photoelectro-catalytic reactions.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1991 with total page 1460 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book Photochemically and Electrochemically Driven Homogeneous Catalysts for Hydrogen Oxidation and Carbon Dioxide Reduction written by Mark Westwood and published by . This book was released on 2018 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Secondly, molecular catalysts for CO2 reduction are studied with the aim of understanding how catalytic activity is influenced by the nature of the monodentate ligands. Whether efficient catalysis requires the routinely employed but photolabile CO ligand is explored. The electrocatalytic reduction of CO2 by Ru-bipyridyl compounds is investigated and their visible-light photochemistry is also discussed.
Download or read book Carbon Dioxide Chemistry Capture and Oil Recovery written by Iyad Karamé and published by BoD – Books on Demand. This book was released on 2018-08-16 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fossil fuels still need to meet the growing demand of global economic development, yet they are often considered as one of the main sources of the CO2 release in the atmosphere. CO2, which is the primary greenhouse gas (GHG), is periodically exchanged among the land surface, ocean, and atmosphere where various creatures absorb and produce it daily. However, the balanced processes of producing and consuming the CO2 by nature are unfortunately faced by the anthropogenic release of CO2. Decreasing the emissions of these greenhouse gases is becoming more urgent. Therefore, carbon sequestration and storage (CSS) of CO2, its utilization in oil recovery, as well as its conversion into fuels and chemicals emerge as active options and potential strategies to mitigate CO2 emissions and climate change, energy crises, and challenges in the storage of energy.
Download or read book Electrochemical Reduction of Carbon Dioxide written by Jinli Qiao and published by CRC Press. This book was released on 2016-07-06 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt: For Researchers, Students, Industrial Professionals, and ManufacturersElectrochemical Reduction of Carbon Dioxide: Fundamentals and Technologies is your guide to improved catalytic performance in the electrochemical reduction of carbon dioxide (CO2). Written by electrochemical energy scientists actively involved in environmental research and develo
Download or read book Iron Porphyrins written by A. B. P. Lever and published by Wiley-VCH. This book was released on 1989-03-31 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Porphyrins play a vital role in many biological functions including oxygen transport, electron transfer and catalyzing the incorporation of oxygen into other molecules. This current survey discusses the use of modern physical techniques to probe porphyrin structure and function. The authors review the data available through a particular technique and show what can be learned therefrom about the (electronic) structure and function of biologically important porphyrins. The techniques include magnetic circular dichroism, X-ray absorption fine structure (EXAFS) and Mössbauer spectroscopies. All contributors are well known in their respective fields, enjoying world-wide reputation.
