Journal
ELECTROCHEMICAL AND SOLID STATE LETTERS
Volume 7, Issue 6, Pages A148-A150Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/1.1707027
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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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