KOH/甲醇溶液中Pb电极上电化学还原CO2Electrochemical Reduction of CO2 on a Pb Electrode in KOH-Methanol Solution
宋爽,何志桥,叶杰旭,陈建孟
摘要(Abstract)：
化学转化CO2为更有价值的物质对于缓解大气中的温室气体极为重要。以Pb片为工作电极,石墨电极为对电极,银-氯化银电极为参比电极,研究了0.1mol?L?1KOH/甲醇电解液中电化学还原CO2的行为。结果表明,在所考察的范围内,常压下CO和甲酸生成的法拉第效率在258K时最大,分别为9.62%和78.74%,常温加压条件下,CO2压力为1.2MPa时CO和甲酸生成的法拉第效率最大,分别为13.93%和24.00%。进一步进行电极反应的动力学研究,得CO2电化学还原生成CO和甲酸的反应级数分别为0.573和0.671。
关键词(KeyWords)： 二氧化碳;电化学;Pb电极;KOH/甲醇电解液;动力学
基金项目(Foundation): 国家自然科学基金(50408024);; 浙江省自然科学基金(M203034,Y505036)。
作者(Author): 宋爽,何志桥,叶杰旭,陈建孟
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