高等学校化学学报 ›› 1992, Vol. 13 ›› Issue (3): 371.

• 论文 • 上一篇    下一篇

CO在负载铂催化剂上的催化氧化、TPD及TPSR研究

杜少斌1, 王瑾2   

  1. 1. 浙江大学化学系, 杭州;
    2. 杭州大学化学系, 杭州, 310028
  • 收稿日期:1991-03-11 出版日期:1992-03-24 发布日期:1992-03-24
  • 通讯作者: 王瑾

Studies on the Catalytic Activity, TPD and TPSR of CO over Supported Platinum Catalysts

DU Shao-bin1, WANG Jin2   

  1. 1. Department of Chemistry, Zhejiang University, Hangzhou;
    2. Department of Chemistry, Hangzkou University, Hangzhou, 310028
  • Received:1991-03-11 Online:1992-03-24 Published:1992-03-24

摘要: 研究了Pt/MeM(Me=H,Cu,Ce)系列催化剂对CO的催化氧化活性,用热导-气相色谱同步跟踪CO在MeM和Pt/MeM上的TPD,发现CO2脱附量大小及峰温次序与对CO的催化氧化活性一致。CO吸附达稳态后的TPSR(CO2)研究表明CO2的脱附峰温较TPD低,且其脱附量大小、峰温次序亦与对CO的催化氧化活性次序一致。

关键词: 丝光沸石, 程序升温脱附, 程序升温表面反应

Abstract: The catalytic activity for the oxidation of COon the supported Pt/MeM(Me = H, Cu, Ce) catalysts was investigated.CO-TPDon MeM and Pt/MeM was monitored by TC-GCtechnique.It was found that the peak temperatures of desorbed CO2 were in agreement with the catalytic activities.The results of TPSR(CO2) after a steady-state adsorption of COshow that the peak temperatures of the desorbed CO2 were lower than those of the desorbed CO2 of CO-TPD and the desorbed amount of CO2 and the order of peak temperature well agreed with their activities.Furthermore, the probable mechanism of oxidation of CO over Pt/MeM catalysts was also proposed.

Key words: Mordenite, Temperature programmed desorption, Temperature programmed surface reaction

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