Kinetic study of methanol oxidation on Pt2Ru3/C catalyst in the alkaline media

被引：9
|
作者：
Tripkovic, A. V. [1 ]
Popovic, K. DJ. [1 ]
Lovic, J. D. [1 ]
机构：
[1] Univ Belgrade, ICTM Inst Electrochem, Belgrade 11000, Serbia
来源：
JOURNAL OF THE SERBIAN CHEMICAL SOCIETY | 2007年 / 72卷 / 11期
关键词：
platinum-ruthenium alloy; supported nanocatalyst; XRD analysis; methanol; oxidation; alkaline solution;
D O I：
10.2298/JSC0711095T
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The electrochemical oxidation of methanol in NaOH Solution Was examined on a thin film Pt2Ru3/C electrode. The XRD pattern revealed that the Pt2Ru3 alloy consisted of a solid solution of Ru in Pt and a small amount of Ru or a solid solution of Pt in Ru. It was shown that in alkaline Solution, the difference in activity between Pt/C and Pt2Ru3/C is significantly smaller than in acid solution. It is proposed that the reaction follows a quasi bifunctional mechanism. The kinetic parameters indicated that the chemical reaction between adsorbed COad and OHad species could be the rate limiting step.
引用
收藏
页码：1095 / 1101
页数：7
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