高等学校化学学报 ›› 2009, Vol. 30 ›› Issue (5): 945.

• 研究论文 • 上一篇    下一篇

Pt/Ce0.6Zr0.4O2催化剂在水煤气变换反应中的电导研究

毕亚东, 徐恒泳, 李文钊   

  1. 中国科学院大连化学物理研究所, 大连 116023
  • 收稿日期:2008-10-28 出版日期:2009-05-10 发布日期:2009-05-10
  • 通讯作者: 徐恒泳, 男, 研究员, 博士生导师, 主要从事多相催化、氢能及膜分离研究, E-mail: xuhy@dicp.ac.cn
  • 基金资助:

    国家“九七三”计划(批准号: 2005CB221401)资助

Electrical Conductivity Study of Pt/Ce0.6Zr0.4O2 Catalyst in Water-gas Shift Reaction

BI Ya-Dong, XU Heng-Yong*, LI Wen-Zhao   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2008-10-28 Online:2009-05-10 Published:2009-05-10
  • Contact: XU Heng-Yong, E-mail: xuhy@dicp.ac.cn

摘要:

采用浸渍法制备了不同载体(Ce0.6Zr0.4O2,CeO2和ZrO2)负载的Pt基水煤气变换反应(WGSR)催化剂, 并对其进行了活性评价. 利用X射线衍射(XRD), 程序升温还原(TPR)和原位电导等技术对样品进行了表征. 结果表明, Ce0.6Zr0.4O2固溶体具有比CeO2更高的氧转移能力, 因此促进了Pt/Ce0.6Zr0.4O2催化剂的WGSR活性.

关键词: Pt/Ce0.6Zr0.4O2 催化剂, 水煤气变换反应, 程序升温还原, 电导

Abstract:

The catalytic activity for water-gas shift reaction was investigated over Pt catalysts supported on different supports, such as Ce0.6Zr0.4O2, CeO2 and ZrO2. The samples were characterized by XRD, temperature-programmed reduction(TPR) and in situ electrical conductivity to evaluate the structure and redox properties. It is concluded that Ce0.6Zr0.4O2 support was a single phase solid solution with high capacity of oxygen transfer, therefore enthanced the catalytic activity of Pt/Ce0.6Zr0.4O2 catalyst, for water-gas shift reaction.

Key words: Pt/Ce0.6Zr0.4O2 catalyst, Water-gas shift reaction, Temperature-programmed reduction, Electrical conductivity

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