Kinetic study of CO tolerance during electro-oxidation of formic acid on spontaneously deposited Pt/Pd and Pt/Ru nanoparticles

被引：23

作者：

Larsen, R ^{[1
]}

Masel, RI ^{[1
]}

机构：

[1] Univ Illinois, Dept Chem Engn, Urbana, IL 61801 USA

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 06期

关键词：

D O I：

10.1149/1.1707027

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Pt/Pd is unusually active for formic acid electro-oxidation. While the oxidation of formic acid on Pt and Pt/Ru is poisoned by CO, the electro-oxidation of formic acid on Pt/Pd is not greatly inhibited by adsorbed CO. We examined CO stripping in the presence of formic acid and observed that the formic acid provides a continuous source of CO on Pt, Pt/Pd, and PtRu. CO stripping is slower on Pt/Pd than on the other catalysts even though Pt/Pd is unusually CO tolerant. Therefore, it is suggested that formic acid electro-oxidation occurs on a reaction site that is not inhibited by CO. (C) 2004 The Electrochemical Society.

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页码：A148 / A150

页数：3

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