二氧化碳电还原制草酸研究进展

近年来, 二氧化碳过量排放所引发的全球变暖等气候问题引起了全世界的广泛关注, 碳减排已成为人类社会可持续发展面临的共同挑战. 利用电化学方法将二氧化碳转化为高附加值化学品是实现碳减排和二氧化碳高附加值利用的理想途径之一, 但仍面临能耗高、 二氧化碳转化率低、 产物选择性差和难分离等问题. 本文以电还原二氧化碳制草酸为例, 从反应机理、 催化剂、 电解液、 催化电极及反应器等方面介绍该反应的研究进展, 对当前二氧化碳电还原制草酸存在的关键问题进行了分析, 并对其未来研究方向进行了展望.

Progress of CO2 Electroreduction to Oxalic Acid

In recent years， climate issues such as global warming caused by excessive carbon dioxide emissions have attracted wide attention around the world. And carbon emission reduction has become a common challenge to the sustainable development of human society. The conversion of carbon dioxide into high value-added chemicals by electrochemical methods is one of the ideal ways to achieve emission reduction and high value-added utilization of carbon dioxide. However， there are still many problems such as high energy consumption， low carbon dioxide conversion， poor product selectivity and difficult separation. In this paper， we take the electroreduction of carbon dioxide to oxalic acid as an example， comprehensively introduce the research progress from the aspects of reaction mechanism， catalysts， electrolyte， electrode and reactor. The key problems in the production of oxalic acid by carbon dioxide electroreduction are discussed and some valuable suggestions are put forward for the future research of carbon dioxide electroreduction to oxalic acid.