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Electrochemical reduction of carbon dioxide : ウィキペディア英語版
Electrochemical reduction of carbon dioxide
The electrochemical reduction of carbon dioxide (ERC) is the conversion of carbon dioxide to more reduced chemical species using electrical energy. The first examples of electrochemical reduction of carbon dioxide are from the 19th century, when carbon dioxide was reduced to formic acid using a zinc cathode. Research in this field intensified in the 1980s following the oil embargoes of the 1970s. Electrochemical reduction of carbon dioxide represents a possible means of producing chemicals or fuels, converting carbon dioxide (CO2) to organic feedstocks such as formic acid (HCOOH), methanol (CH3OH), ethylene (C2H4), methane (CH4), and carbon monoxide (CO).〔Gabriele Centi, Siglinda Perathoner "Opportunities and prospects in the chemical recycling of carbon dioxide to fuels" Catalysis Today 148 (2009) 191–205.〕〔J. Qiao, et al., (A review of catalysts for the electroreduction of carbon dioxide to produce low-carbon fuels ), Chem.Soc.Rev., 2014, 43 , 631-675.〕〔Appel, A. M. et al. "Frontiers, Opportunities, and Challenges in Biochemical and Chemical Catalysis of CO2 Fixation", Chem. Rev. 2013, vol. 113, 6621-6658. 〕
== Chemicals from carbon dioxide ==
In carbon fixation plants convert carbon dioxide into sugars, from which most many biosynthetic pathways originate. The catalyst responsible for this conversion, RuBisCo, is the most common protein on earth. Some anaerobic organisms employ enzymes to convert CO2 to carbon monoxide, from which fatty acids can be made.〔1. J. C. Fontecilla-Camps, P. Amara, C. Cavazza, Y. Nicolet and A. Volbeda, "Structure-function relationships of anaerobic gas-processing metalloenzymes", Nature 2009, volume 460, p. 814-822.〕
In industry, a few products are made from CO2. These include urea, salicylic acid, methanol, and certain inorganic and organic carbonates.〔Susan Topham, "Carbon Dioxide" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. 〕 In the laboratory, carbon dioxide is sometimes used to prepare carboxylic acids.

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