物理化学学报 >> 1995, Vol. 11 >> Issue (04): 315-319.doi: 10.3866/PKU.WHXB19950406

研究论文 上一篇    下一篇

ZrO2改性对Pt/Al2O3催化剂上CO氧化性能的影响

周仁贤,郑小明   

  1. 杭州大学催化研究所|杭州 310028
  • 收稿日期:1994-03-17 修回日期:1994-07-16 发布日期:1995-04-15
  • 通讯作者: 周仁贤

Effect of ZrO2 on the Oxidation of CO on Pt/Al2O3

Zhou Ren-Xian,Zheng Xiao-Ming   

  1. Research Institute of Catalysis,Hangzhou University,Hangzhou 310028
  • Received:1994-03-17 Revised:1994-07-16 Published:1995-04-15
  • Contact: Zhou Ren-Xian

摘要:

用流动反应法、TPR和TPD-MS等技术研究了Pt/Al2O3催化剂掺杂ZrO2体系上CO的催化氧化反应、氧物种的还原及脱出-恢复行为.结果表明,掺杂ZrO2有利于催化剂上氧物种的脱出-恢复,从而促进CO氧化活性及表面活泼氧物种与氢的反应.并用催化剂集团结构适应理论对结果作出了解释.

关键词: 催化剂, 氧化, ZrO2, Pt

Abstract:

The catalytic activity for the oxidation of CO, reduction and desorptionrenewal properties of oxygen species on Pt/Al2O3 catalyst system doped with ZrO2 were studied by TPR, TPD-MS and flowing reaction methods. It was shown that ZrO2 could promote the desorption-renewal of oxygen species on catalysts and thus increase the oxidation activity of CO and H2-O2 reaction on such catalysts. These results were interpreted by the model of catalyst group structure correspondence.

Key words: Catalyst, Oxidation, ZrO2, Pt