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Photoelectrochemical Fixation of carbon dioxide by metal complexes

金属配合物光电化学固定二氧化碳

基本信息

批准号：
02805092
负责人：
MIZUNO Takayuki
金额：
$ 0.96万
依托单位：
Mie University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1991
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02805092/
关键词：
Carbon diooxide Reductive Fixation Mediated electrode Non-aqueous Solvent Liquid carbon dioxide 非水容媒

项目摘要

1. Object : In this report, we study on electrochemical reduction of CO_2 with mediated electrodes in aqueous solutions and with a copper electrode in non-aqueous solvents and liquid CO_2, aiming at search for suggestion as to efficient reduction process of CO_2.2. Resuts(1) Formation of methanol with a mediated electrode : We found Hexacyanoruthenium was effective as a mediator for reduction of CO_2 to methanol, in studying electrochemical reduction performance of hexacyanates mediator. Ferrous complex of Tiron, Nitroso-R salt and O-phenanthroline were effective as a catalyser of the reduction.(2) Electrochemical reduction in non-aqueous electrolytes : In amine solutions which are used as a separating solvent of CO_2 from flue gas, CO_<> were not reduced electrochemically, because amines combine with CO_2 to form a compound. Secondly we sdudied on methanol which is used also as one of the solvent. In the case of methanol with small amount of water, CO_2 was electrochemically reduced to form CO, H_2, CH_2CH_2 and CH_4 in the order of their magnitude.(3) Reduction in liquid CO_2 : We found electrochemical reduction occurred in liguid CO_2 solution containing methanol with Benzalkonium Chloride. Reduction products were H_2, CH_4 and CO in the order of their magnitude.

1. 目的：本文研究了介质电极和铜电极在非水溶剂和液体CO_2中对CO_2的电化学还原，探讨了CO_2的高效还原工艺。结果(1)以六氰酸酯为介质的电极生成甲醇：在研究六氰酸酯为介质的电化学还原性能时，我们发现六氰酸盐是将CO_2还原为甲醇的有效介质。亚铁配合物、亚硝基r盐和邻菲罗啉是有效的催化剂。(2)非水电解质的电化学还原：用胺溶液作为烟气中CO_2的分离溶剂，由于胺与CO_2结合形成化合物，CO_<>不能被电化学还原。其次，我们对甲醇进行了研究，甲醇也被用作溶剂之一。在甲醇中加入少量水的情况下，CO_2被电化学还原成CO、H_2、CH_2CH_2和CH_4。(3)液态CO_2的还原：我们发现在含甲醇的液态CO_2溶液中，苯扎氯铵发生了电化学还原。还原产物依次为H_2、CH_4和CO。