高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (4): 580.

• 论文 • 上一篇    下一篇

CO2加H2合成甲醇Cu－Zn－O催化剂表面化学态研究

许勇, 卢冠忠, 汪仁   

  1. 华东理工大学工业催化研究所, 上海, 200237
  • 收稿日期:1993-06-07 修回日期:1993-09-16 出版日期:1994-04-24 发布日期:1994-04-24
  • 通讯作者: 许勇,男,28岁,博士.
  • 作者简介:许勇,男,28岁,博士.

Studies on the Surface Chemical State of Cu-Zn-O Catalyst for Methanol Synthesis from Carbon Dioxide with Hydrogen

XU Yong, LU Guan-Zhong, WANG Ren   

  1. Research Institutc of Industrial Catalysis, East China University of Science and Technology, Shanghai, 200237
  • Received:1993-06-07 Revised:1993-09-16 Online:1994-04-24 Published:1994-04-24

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摘要： 应用XRD、ESR、URDS、XPS及XAES等手段研究了CO2加H2合成甲醇Cu-Zn-O催化剂在还原后和反应状态下的表面化学状态,结果表明,在还原及反应状态下,催化剂表面仅能检测到Cu0,而未发现稳定的Cu2+和Cu+存在;ZnO被部分还原产生低价锌Zn2-δ(0<δ<2).关联活性测试结果认为,Cu0/Zn(2-δ)+O构成CO2加H2合成甲醇反应的活性中心。

关键词: CO2+H2, 合成甲醇, Cu－Zn－O催化剂, 活性中心

Abstract: XRD,ESR,UDRS,XPS and XAES have been used to examine the surface chemical state of Cu-Zn-Ocatalyst for methanol synthesis from carbon dioxide and hydrogen after the reduction and under the reaction conditions.The results show that only Cu0 on surface of the catalyst was found, no stable Cu2+ and Cu+ exist; a part of ZnO is reduced to produce lower valence Zn(2-δ)+(0<δ<2).And Cu0 and Zn(2-δ)+ is thought to be the active center of methanol synthesis reaction from carbon dioxide and hydrogen according to the activity measurement results.

Key words: CO2+H2, Methanol synthesis, Copper-zinc-oxygen catalyst, Active center

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