Lai Stanley C S, Koper Marc T M
Leiden Institute of Chemistry, Leiden University, PO Box 9502, RA Leiden 2300, The Netherlands.
Faraday Discuss. 2008;140:399-416; discussion 417-37. doi: 10.1039/b803711f.
The electrochemical oxidation of ethanol and acetaldehyde in sulfuric acid and perchloric acid were studied at Pt (111), Pt (110), and a number of Pt [n(l11)x(111)] single-crystal electrodes. The oxidation of ethanol shows a marked dependence on the surface structure, roughly increasing as the surface step density increases. The oxidation of acetaldehyde shows a reversed correlation, the activity decreasing with increasing step density. Based on the results obtained here and reported earlier in electrochemical and ultrahigh vacuum literature, a detailed reaction scheme for the ethanol oxidation mechanism is suggested.
在铂（111）、铂（110）以及多个铂[n(111)x(111)]单晶电极上，研究了乙醇和乙醛在硫酸和高氯酸中的电化学氧化。乙醇的氧化表现出对表面结构的显著依赖性，大致随着表面台阶密度的增加而增加。乙醛的氧化呈现出相反的相关性，活性随着台阶密度的增加而降低。基于此处获得的结果以及先前在电化学和超高真空文献中报道的结果，提出了乙醇氧化机理的详细反应方案。
