高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (9): 1470.

• 研究简报 • 上一篇    下一篇

稀土对甲醇车尾气净化银催化剂性能影响的研究

王幸宜, 万颖, 卢冠忠   

  1. 华东理工大学工业催化研究所, 上海 200237
  • 收稿日期:1999-09-24 出版日期:2000-09-24 发布日期:2000-09-24
  • 通讯作者: 王幸宜(1958年出生),女,硕士,副教授,从事催化新材料与新技术研究.E-mail:Wangxy102@21cn.com. E-mail:Wangxy102@21cn.com.
  • 基金资助:

    上海市高等学校青年教师学术基金(批准号:96JG05051)资助

Effects of Rare Earth on Methanol Fuel Exhaust Deep Oxidation over Ag Catalyst

WANG Xing-Yi, WAN Ying, LU Guan-Zhong   

  1. Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
  • Received:1999-09-24 Online:2000-09-24 Published:2000-09-24

关键词: 负载银催化剂, 甲醇氧化, 镧,

Abstract: The performance of deep oxidation of methanol on supported Ag catalysts was examined by a chromatograph-micro-reactor. The research results showed that La and/or Ce added into γ-alumina support affected greatly the activity and selectivity of methanol oxidation on Ag catalyst. La could lower light-off temperature of methanol oxidation and decreased the content of intermediate containing oxygen, but at low temperature HCOOCH3 formed. Ce had an unfavorable role. The addition of La and Ce into catalyst could cause the effects of these elements to offset. By XPStechnique, it was showed that La and Ce could change the chemical valence of Ag inversely, which corresponded to the modifications of catalytic performance.

Key words: Supported Ag catalyst, Methanol oxidation, Lanthanum, Cerium

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