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Citation: WANG Xiuyan, ZHAO Xueping, MA Shuhua. Preparation of Silicotungstic Acid Modified Carbon Supported Pd Catalyst by Impregnation Method and Its Electrocatalytic Performance for Formic Acid Oxidation[J]. Chinese Journal of Applied Chemistry, ;2013, 30(12): 1470-1475. doi: 10.3724/SP.J.1095.2013.30158 shu

Preparation of Silicotungstic Acid Modified Carbon Supported Pd Catalyst by Impregnation Method and Its Electrocatalytic Performance for Formic Acid Oxidation

a. Department of Chemical Engineering, Chengde Petroleum College, Chengde 067000, China;
b. Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China

Received Date: 1 April 2013
Revised Date: 21 May 2013

The silicotungstic acid (SiWA) modified carbon supported Pd (Pd/C-SiWA) catalyst was prepared with immersing method. The chronoamperometric experiment shows that the current density are 0.013 A/mg and 0.082 A/mg at 3000 s for the Pd/C and Pd/C-SiWA catalysts,which are the 2.5% and 14.1% of that at 10 s,respectively. The result suggests that the electrocatalytic activity and stability of the Pd/C-SiWA catalyst for formic acid oxidation are much better than that of the Pd/C catalyst. This is attributed to that the Pd/C-SiWA catalyst inhibits the decomposition of formic acid leading to the decrease in the poisoning effect of CO. Thus,the electrocatalytic stability of the Pd/C catalyst for formic acid oxidation is improved.
- direct formic acid fuel cell,
- carbon supported Pd catalyst,
- silicotungstic acid modification,
- formic acid oxidation,
- formic acid decomposition
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