| 热处理对多元醇法制备的PtRu/C电催化剂的影响 |
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| 引用本文： | 闫世友,孙公权,齐静,高妍,辛勤. 热处理对多元醇法制备的PtRu/C电催化剂的影响[J]. 催化学报, 2009, 30(11) |
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| 作者姓名： | 闫世友 孙公权 齐静 高妍 辛勤 |
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| 作者单位： | 中国科学院大连化学物理研究所,辽宁大连,116023;中国科学院研究生院,北京,100049;中国科学院大连化学物理研究所,辽宁大连,116023;中国科学院大连化学物理研究所,辽宁大连,116023;中国科学院大连化学物理研究所催化基础国家重点实验室,辽宁大连,116023 |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划 |
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| 摘 要： | 采用热重、在线质谱、X射线衍射和透射电镜等技术研究了热处理对多元醇法制备的PtRu/C电催化剂催化活性的影响.结果表明,热处理前电催化剂表面吸附较多残余物种,在惰性气氛中200℃下热处理2h可以去除部分吸附物种.虽然热处理后电催化剂的平均粒径比热处理前稍有增大,但电催化剂颗粒的分散度仍较高.热处理后电催化剂催化甲醇电氧化反应的活性明显提高.
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| 关 键 词： | 铂 钌 热处理 多元醇法 甲醇电化学氧化 直接甲醇燃料电池 |
Effect of Heat Treatment on the PtRu/C Electrocatalyst Prepared by the Polyol Method |
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| YAN Shiyou,SUN Gongquan,QI Jing,GAO Yan,XIN Qin. Effect of Heat Treatment on the PtRu/C Electrocatalyst Prepared by the Polyol Method[J]. Chinese Journal of Catalysis, 2009, 30(11) |
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| Authors: | YAN Shiyou SUN Gongquan QI Jing GAO Yan XIN Qin |
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| Affiliation: | YAN Shiyou1,2,SUN Gongquan1,QI Jing1,GAO Yan1,XIN Qin1,3 1Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,Liaoning,China 2Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,China |
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| Abstract: | The effect of heat treatment on catalytic activity of a PtRu/C electrocatalyst synthesized by the polyol method was investigated by thermogravimetry, on-line mass spectroscopy, X-ray diffraction, and transmission electron microscopy. The results indicate that abundant species adsorbs on the electrocatalyst surface, which can be effectively removed by heat-treating at 200 oC under inert atmosphere for 2 h. The particle size of the electrocatalyst increases slightly after heat treatment, but the particles rem... |
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| Keywords: | platinum ruthenium heat treatment polyol method methanol electrooxidation direct methanol fuel cell |
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