| 促进型Pt/C类催化剂对甲醇的电氧化作用 |
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| 引用本文： | 廖世军,叶立炎.促进型Pt/C类催化剂对甲醇的电氧化作用[J].华南理工大学学报(自然科学版),2005,33(7):1-5. |
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| 作者姓名： | 廖世军 叶立炎 |
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| 作者单位： | 华南理工大学,化学科学学院,广东,广州,510640;华南理工大学,化学科学学院,广东,广州,510640 |
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| 基金项目： | 广东省自然科学基金重点资助项目(036555) |
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| 摘 要： | 研究了硅钼酸、磷钨酸促进型Pt／C类催化剂对甲醇的电氧化作用．采用循环伏安法和线性伏安法考察了催化剂的制备方法、添加剂、甲醇浓度、反应温度等因素对催化剂活性的影响，并用XRD和EDS技术对催化剂进行表征．结果表明：Mo含量(质量分数)为7．87％的Pt—Ru—Mo／C催化剂的活性为Pt—Ru／C商品催化剂(E—TEK)活性的1．65倍；添加硅钼酸和磷钨酸可以使得活性组分的分散度提高，从而显著提高催化剂的活性和抗毒性能．
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| 关 键 词： | 催化剂 甲醇 电氧化 钼 钨 燃料电池 |
| 文章编号： | 1000-565X(2005)07-0001-05 |
| 修稿时间： | 2004年7月27日 |
Electrocatalytic Oxidation of Methanol on Promoted Pt/C Catalysts |
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| LIAO Shi-jun,YE Li-yan.Electrocatalytic Oxidation of Methanol on Promoted Pt/C Catalysts[J].Journal of South China University of Technology(Natural Science Edition),2005,33(7):1-5. |
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| Authors: | LIAO Shi-jun YE Li-yan |
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| Abstract: | The electrocatalytic oxidation of methanol on promoted Pt/C catalysts, which were prepared using silicomolybedic acid or phosphotungstic acid as the promoter, was investigated. The effects of preparation methods, additives, methanol concentration and reaction temperature on the catalytic activity were then studied by linear scan and cyclic scan methods, and the catalysts were characterized by XRD and EDS. The results show that the Pt-Ru-Mo/C catalyst with the mass fraction of Mo of 7.87% has 65% higher activity than the commercial catalyst Pt-Ru/C manufactured by E-TEK Company, and that the addition of silicomolybdic acid and phosphotungstic acid improves the dispersion of active components, thus significantly enhancing the catalytic activity and CO tolerance of the catalysts. |
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| Keywords: | catalyst methanol electrocatalytic oxidation molybdenum tungsten fuel cell |
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