| 浸渍法制备硅钨酸修饰的炭载钯催化剂电催化甲酸氧化 |
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| 引用本文： | 王秀艳 赵雪萍 马树华. 浸渍法制备硅钨酸修饰的炭载钯催化剂电催化甲酸氧化[J]. 应用化学, 2013, 30(12): 1470-1475. DOI: 10.3724/SP.J.1095.2013.30158 |
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| 作者姓名： | 王秀艳 赵雪萍 马树华 |
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| 作者单位： | (1.承德石油高等专科学校化学工程系 承德 067000；2.山东省氟化学化工材料重点实验室,济南大学化学化工学院 济南 250022) |
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| 摘 要： | 用浸渍的方法制备了硅钨酸（SiWA）修饰的炭载Pd(Pd/C-SiWA)催化剂。 计时电流曲线研究表明，在Pd/C和Pd/C-SiWA催化剂电极上，3000 s时的电流密度分别为0.013和0.082 A/mg，分别为10 s时电流密度的2.5%和14.1%。 结果表明，Pd/C-SiWA催化剂对甲酸氧化的电催化稳定性要远远优于Pd/C催化剂。 这是因为Pd/C催化剂上SiWA的修饰抑制了甲酸的自分解, 从而减小了CO的毒化作用，改进了Pd/C催化剂对甲酸氧化的电催化和稳定性。
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| 关 键 词： | 直接甲酸燃料电池 炭载钯催化剂 硅钨酸修饰 甲酸氧化 甲酸分解 |
| 收稿时间： | 2013-04-01 |
| 修稿时间： | 2013-05-20 |
Preparation of Silicotungstic Acid Modified Carbon Supported Pd Catalyst by Impregnation Method and Its Electrocatalytic Performance for Formic Acid Oxidation |
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| 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 |
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| Authors: | WANG Xiuyan ZHAO Xueping MA Shuhua |
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| Affiliation: | (1.Department of Chemical Engineering,Chengde Petroleum College,Chengde 067000,China;2.Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials,;School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,China) |
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| Abstract: | 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. |
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| Keywords: | direct formic acid fuel cell carbon supported Pd catalyst silicotungstic acid modification formic acid oxidation formic acid decomposition |
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