Molecular Catalysts for CO2 Fixation/Reduction
Society is currently confronted with the continuing environmental problems of global warming and ocean acidification related to increasing CO2 emission from anthropogenic sources. These environmental issues are also connected to the inevitable energy supply shortage due to the eventual depletion of...
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fttriple:oai:gotriple.eu:20.500.12854/73764 2023-05-15T17:51:47+02:00 Molecular Catalysts for CO2 Fixation/Reduction Ishida, Hitoshi Machan, Charles Robert, Marc Iwasawa, Nobuharu 2020-01-01 https://directory.doabooks.org/handle/20.500.12854/73764 https://hdl.handle.net/20.500.12854/73764 other unknown 20.500.12854/73764 https://directory.doabooks.org/handle/20.500.12854/73764 undefined Directory of Open Access Books envir geo Book https://vocabularies.coar-repositories.org/resource_types/c_2f33/ 2020 fttriple https://doi.org/20.500.12854/73764 2023-01-22T18:27:45Z Society is currently confronted with the continuing environmental problems of global warming and ocean acidification related to increasing CO2 emission from anthropogenic sources. These environmental issues are also connected to the inevitable energy supply shortage due to the eventual depletion of fossil fuel sources. As a solution, the technology of recycling CO2 into useful organic materials continues to attract attention. This methodology can be categorized into two main parts: CO2 fixation and CO2 reduction. For both reactions, molecular catalysts based on transition metal coordination complexes and organometallic compounds have been developed and examined. Molecular catalysts can be characterized and iteratively improved at the molecular level through spectroscopic experiments and the isolation of intermediate species, which is particularly advantageous in comparison to heterogeneous catalysts. The fixation of CO2 into organic compounds to form a carbon-carbon bond by using organometallic catalysts is a direct methodology for CO2 utilization and represents the potential reversible storage of electrochemical energy in chemical bonds. The resultant carboxylic acid-containing compounds formed as the initial products can be subsequently converted into other organic materials, even products with new chiral centers. The reduction of CO2 by two electrons (often with a proton donor as a co-substrate) yields carbon monoxide (CO) and formic acid (HCOOH), which can be further converted to useful chemicals. Reduction reactions involving more than two electrons and two protons can produce formaldehyde (HCHO), methanol (CH3OH), and methane (CH4), which are also desirable as chemicals and fuels. For molecular electrocatalysts, more negative potentials than the equilibrium ones for CO2 reduction are generally required; the difficulty is that the equilibrium potentials for CO2 reduction are generally negative of the equilibrium potential for proton reduction to produce H2, representing a competing thermodynamically favored ... Book Ocean acidification Unknown |
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Society is currently confronted with the continuing environmental problems of global warming and ocean acidification related to increasing CO2 emission from anthropogenic sources. These environmental issues are also connected to the inevitable energy supply shortage due to the eventual depletion of fossil fuel sources. As a solution, the technology of recycling CO2 into useful organic materials continues to attract attention. This methodology can be categorized into two main parts: CO2 fixation and CO2 reduction. For both reactions, molecular catalysts based on transition metal coordination complexes and organometallic compounds have been developed and examined. Molecular catalysts can be characterized and iteratively improved at the molecular level through spectroscopic experiments and the isolation of intermediate species, which is particularly advantageous in comparison to heterogeneous catalysts. The fixation of CO2 into organic compounds to form a carbon-carbon bond by using organometallic catalysts is a direct methodology for CO2 utilization and represents the potential reversible storage of electrochemical energy in chemical bonds. The resultant carboxylic acid-containing compounds formed as the initial products can be subsequently converted into other organic materials, even products with new chiral centers. The reduction of CO2 by two electrons (often with a proton donor as a co-substrate) yields carbon monoxide (CO) and formic acid (HCOOH), which can be further converted to useful chemicals. Reduction reactions involving more than two electrons and two protons can produce formaldehyde (HCHO), methanol (CH3OH), and methane (CH4), which are also desirable as chemicals and fuels. For molecular electrocatalysts, more negative potentials than the equilibrium ones for CO2 reduction are generally required; the difficulty is that the equilibrium potentials for CO2 reduction are generally negative of the equilibrium potential for proton reduction to produce H2, representing a competing thermodynamically favored ... |
author2 |
Ishida, Hitoshi Machan, Charles Robert, Marc Iwasawa, Nobuharu |
format |
Book |
title |
Molecular Catalysts for CO2 Fixation/Reduction |
title_short |
Molecular Catalysts for CO2 Fixation/Reduction |
title_full |
Molecular Catalysts for CO2 Fixation/Reduction |
title_fullStr |
Molecular Catalysts for CO2 Fixation/Reduction |
title_full_unstemmed |
Molecular Catalysts for CO2 Fixation/Reduction |
title_sort |
molecular catalysts for co2 fixation/reduction |
publishDate |
2020 |
url |
https://directory.doabooks.org/handle/20.500.12854/73764 https://hdl.handle.net/20.500.12854/73764 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Directory of Open Access Books |
op_relation |
20.500.12854/73764 https://directory.doabooks.org/handle/20.500.12854/73764 |
op_rights |
undefined |
op_doi |
https://doi.org/20.500.12854/73764 |
_version_ |
1766159045077499904 |