高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (2): 270.

• 论文 • 上一篇    下一篇

ZrO2在Pd/Al2O3催化剂中的助剂作用

周仁贤1, 郑小明1, 葛玉平2   

  1. 1. 杭州大学催化研究所, 杭州 310028;
    2. 杭州大学化学系
  • 收稿日期:1994-04-05 修回日期:1994-09-08 出版日期:1995-02-24 发布日期:1995-02-24
  • 通讯作者: 郑小明
  • 作者简介:周仁贤,男,31岁,硕士,讲师
  • 基金资助:

    浙江省教育委员会基金

Studies on the Promoter Effect of ZrO2in Pd/Al2O3Catalysts

ZHOU Ren-Xian1, ZHENG Xiao-Ming1, GE Yu-Ping2   

  1. 1. Research Institute of Catalysis, Hangzhou University Hangzhou, 310028;
    2. Departmen of Chemistry, Hangzhou University, Hangzhou
  • Received:1994-04-05 Revised:1994-09-08 Online:1995-02-24 Published:1995-02-24

摘要: 用流动反应法考察了富氧或贫氧气氛中添加ZrO2的Pd/Al2O3催化剂上CO的催化氧化反应,并用XRD、TPR和TPD-MS等技术研究了助剂ZrO2与γ-Al2O3间的相互作用对催化剂上氧物种的还原和脱出-恢复行为的影响.结果表明,基质γ-Al2O3与ZrO2能发生相互作用,添加6%ZrO2的催化剂氧化活性最好,添加适量的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.

关键词: 催化氧化, 氧化锆,

Abstract: The catalytic activity of COoxidation on Pd/Al2O3catalysts doped with ZrO2was examined in different atomspheres.The interaction of Zr-Al,the effect of property of the desorption-renewal of oxygen specie,on the catalysts was investigated by XRD,TPR and TPD-MS techniques.The results showed that suitable amount of ZrO2would promote the desorption and renewal of oxygen species on catalysts.Thus,it increased the activities of COoxidation and the reaction between H2and O2on the catalysts.The catalyst doped with ZrO2showed the best reactivity.

Key words: Catalytic oxidation, ZrO2, Pd

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