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电化学  2014 

Pt电极上甲酸电催化氧化机理研究进展

DOI: 10.13208/j.electrochem.130891, PP. 333-342

Keywords: 甲酸氧化,铂电极,双途径机理,间接途径,直接途径,甲酸根途径

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Abstract:

本文综述了甲酸在铂电极上电催化氧化机理的实验和理论研究进展.铂电极甲酸的电化学氧化主要有两种途径:1)间接途径,甲酸经由CO中间物氧化为最终产物CO2,室温下该途径对总电流贡献不超过1%;2)直接途径,甲酸直接氧化生成CO2.作者课题组对文献中桥式吸附甲酸根是否是甲酸氧化反应直接途径的反应中间物的争论进行了详细的分析和探讨,认为桥式吸附的甲酸根不是间接途径中生成CO的前驱体,也不是甲酸直接氧化途径的中间物.作者课题组还指出了支持甲酸根是甲酸直接氧化途径的反应中间物的推论的问题所在.

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