高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (12): 1921.

• 论文 • 上一篇    下一篇

添加Ag对Cu/γ-Al2O3催化剂

朱波1, 罗孟飞1, 仲逸芬1, 李斌峰1, 袁贤鑫1, 陈平2, 吴红丽3   

  1. 1. 杭州大学催化研究所, 杭州, 310028;
    2. 杭州大学化学系;
    3. 杭州大学中心实验室
  • 收稿日期:1994-12-26 修回日期:1995-03-23 出版日期:1995-12-24 发布日期:1995-12-24
  • 通讯作者: 朱波,男,28岁,硕士,讲师.
  • 作者简介:朱波,男,28岁,硕士,讲师.
  • 基金资助:

    浙江省教育委员会基金

Effect of the Performance of Cu/γ-Al2O3Catalyst with the Addition of Ag

ZHU Bo1, LUO Meng-Fei1, ZHONG Yi-Fen1, LI Bin-Feng1, YUAN Xian-Xin1, CHEN Ping2, WU Hong-Li3   

  1. 1. Institute of Catalysis, Hangzhou University, Hangzhou, 310028;
    2. Department of Chemistry, Hangzhou University;
    3. Central Laboratory, Hangzhou Univeristy
  • Received:1994-12-26 Revised:1995-03-23 Online:1995-12-24 Published:1995-12-24

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摘要： 运用BET、XRD、TPR及苯和丙酮氧化活性测定等方法研究了Cu/γ-Al2O3和Cu-Ag/γ-Al2O3催化剂的还原性能和对有机物的催化活性。结果表明:不同金属负载量的Cu/γ-Al2O3催化剂的还原性能有明显差异,反映出催化剂表面存在着不同种类的铜物种。Ag的添加使催化剂的TPR峰位发生明显位移,提高了催化剂对有机物的催化氧化活性。同时还发现,热处理温度对催化剂中铜物种的存在形式、催化还原特性及催化活性有明显影响。Ag在一定程度上提高了催化剂的热稳定性。

关键词: Cu/&gamma, -Al2O3催化剂, 添加Ag, 还原特性, 氧化活性

Abstract: The BET, XRD, TPRtechniques and the measurement of catalytic activity for benzene and acetone oxidation were used to study the reducibility and activity of Cu/γ-Al2O3, Cu-Ag/γ-Al2O3catalysts.It is found that different TPRprofiles are produced with different metal contents, and different copper species are present on the surface of catalysts.With addition of Ag, there is an obvious displacement between the TPRprofiles of γ-Al2O3-supported Cu-Ag and Cu catalysts, and the activity of catalyst for benzene and acetone oxidation is enhanced. The results showed that the forms of copper species,the reducibility and the catalytic activity of catalysts are affected by the variation of treatment temperature.The addition of Ag, to some extent, can improve the thermal stability of catalyst.

Key words: Cu/γ-Al2O3catalyst, Addition of Ag, Reducibility, Oxidation activity

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