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Kinetic study of formic acid oxidation on carbon supported Pd electrocatalyst

✍ Scribed by Yujiao Wang; Bing Wu; Ying Gao; Yawen Tang; Tianhong Lu; Wei Xing; Changpeng Liu

Publisher
Elsevier Science
Year
2009
Tongue
English
Weight
504 KB
Volume
192
Category
Article
ISSN
0378-7753

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✦ Synopsis

The oxidation of formic acid at the Pd/C catalyst electrode is a completely irreversible kinetic process with the reaction order of 1.0. The oxidation rate of formic acid is increased with increasing the concentration of formic acid and is decreased with increasing H + concentration. The apparent negative reaction order with respect to H + is about -0.18 or -0.04 in H 2 SO 4 or HClO 4 solution respectively, because bisulfate anions would inhibit formic acid oxidation at some extent. The kinetic parameters, charge transfer coefficient and the diffusion coefficient of formic acid were obtained under the quasi steady-state conditions.

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