高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (6): 895.

• 论文 • 上一篇    下一篇

氧化铈在非贵金属氧化物催化剂中的作用(Ⅴ)─热环境对Cu－Mn－Ce－O催化剂性能的影响

卢冠忠, 王幸宜, 汪仁, 吴善良   

  1. 华东理工大学工业催化研究所, 上海, 200237
  • 收稿日期:1993-07-15 修回日期:1993-11-28 出版日期:1994-06-24 发布日期:1994-06-24
  • 通讯作者: 卢冠忠,男,36岁,博士,教授.
  • 作者简介:卢冠忠,男,36岁,博士,教授.

Role of Ceria in Non-precious Metal Oxide Catalysts(Ⅴ)─The Effect of Environmental Temperature on the Properties of Cu-Mn-Ce-O catalyst

LU Guan-Zhong, WANG Xing-Yi, WNAG Ren, WU Shan-Liang   

  1. Research Institute of Industrial Catalysis, East China University of Science and Technology, Shangai, 200237
  • Received:1993-07-15 Revised:1993-11-28 Online:1994-06-24 Published:1994-06-24

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摘要： 研究了热环境对Cu-Mn-Ce-O催化剂表面积、结构、氧性能及对甲苯催化氧化活性的影响。发现CeO2作为助催化剂,对延缓氧化铝载体的表面收缩几乎没有作用,但能阻止催化剂中CuMn2O4尖晶石的生成,防止无定型活性相在高温环境中的烧结,提高催化剂水热稳定性能,尤其在温度高于800℃时,效果尤佳,合适的Ce/Cu原子比为0.38～0.44.

关键词: 氢化铈, 氧化铜, 氧化锰, 催化剂, 热稳定性

Abstract: In this paper, the effects of an environmental temperature on the surface area, solid structures, oxygen properties and catalytic actlvities of Cu-Mn-Ce-Osupported on alumina have been studied.The results indicate that as a promoter, CeO2 can not inhibit the reduction of surface area of the supporter at high temperature, but can inhibit the crystal growth of CuMn2O4 spinel in the catalyst and avoid the sinter of the amorphus active solidcompounds in catalysts, and increase the thermostability of the catalysts.In particular, over temperature 800℃ the promoting effect of CeO2 in the catalyst is more obvious, in which the atom ratio of Ce/Cu is 0.38-0.44.

Key words: Cerium oxide, Copper oxide, Manganese oxide, Catalyst, Thermostability

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