催化学报

催化学报 ›› 2008, Vol. 29 ›› Issue (10): 1027-1031.

• 研究论文 • 上一篇    下一篇

醇在载钯碳化钨/碳纳米管催化剂上的氧化

胡西多1,曾志锋1,胡风平2,王敬国3,沈培康2   

  1. 1 东莞理工学院电子工程系, 广东东莞 523106; 2 中山大学光电材料与技术国家重点实验室, 物理科学与工程技术学院, 广东广州 510275; 3 东莞市迈科科技有限公司, 广东东莞 523700
  • 收稿日期:2008-10-25 出版日期:2008-10-25 发布日期:2008-10-25

Alcohol Oxidation on Pd Catalyst Supported on Tungsten Carbides/Carbon Nanotubes

HU Xiduo1, ZENG Zhifeng1, HU Fengping2, WANG Jingguo3, SHEN Peikang2*   

  1. 1 Department of Physics, Dongguan University of Technology, Dongguan 523106, Guangdong, China; 2 State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, Guangdong, China; 3 McNair Technology Co. Ltd, Dongguan 523700, Guangdong, China
  • Received:2008-10-25 Online:2008-10-25 Published:2008-10-25

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摘要： 用交替微波法制备了碳化钨与多壁碳纳米管复合材料(WC/MWCNT), 以该材料为载体制备了Pd基催化剂(Pd-WC/MWCNT), 并将催化剂用于醇的催化氧化反应. 结果表明, Pd-WC/MWCNT催化剂对乙醇的催化氧化活性是Pd/C催化剂的5倍. 交换电流密度测量和反应活化能计算表明, Pd-WC/MWCNT催化剂对乙醇催化氧化的交换电流密度比Pd/C大两个数量级,反应活化能低一倍以上. Pd-WC/MWCNT催化剂催化氧化乙醇性能的大幅度提高是碳化钨与Pd颗粒的协同效应和碳纳米管的结构效应共同作用的结果.

关键词: 碳纳米管, 碳化钨, 钯, 交替微波法, 乙醇氧化, 燃料电池

Abstract: Tungsten carbides on multiwalled carbon nanotubes (WC/MWCNT) were prepared by an intermittent microwave heating method and used as support to load Pd nanopartic les (Pd-WC/MWCNT) for alcohol oxidation. The catalyst activity was enhanced bec ause of the synergistic effect between Pd nanoparticles and the tungsten carbide s and the structure effect of the carbon nanotubes.

Key words: carbon nanotube, tungsten carbide, palladium, intermittent microwave heating, ethanol oxidation, fuel cell