高等学校化学学报 ›› 2001, Vol. 22 ›› Issue (2): 276.

• 研究论文 • 上一篇    下一篇

原位红外光谱研究镧对负载钯催化剂上甲醇车尾气氧化机理的影响

万颖, 王幸宜, 卢冠忠   

  1. 华东理工大学工业催化研究所, 上海 200237
  • 收稿日期:2000-03-08 出版日期:2001-02-24 发布日期:2001-02-24
  • 通讯作者: 王幸宜(1958年出生),女,副教授,从事催化新材料与新技术研究.E-mail:xy.wang@1234.sina.com E-mail:xy.wang@1234.sina.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

In Situ FTIR Study of Effect of La on CH3OH Automobile Exhaust Oxidation Mechanism on Supported Palladium Catalyst

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

  1. Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, China
  • Received:2000-03-08 Online:2001-02-24 Published:2001-02-24

摘要: 在色谱微反装置上考察了负载Pd催化剂的甲醇深度氧化性能.结果表明,在γ氧化铝载体中,添加镧对负载Pd催化剂催化活性和选择性影响较大,甲醇氧化含氧中间物含量大大降低.利用insituFTIR技术测定了镧改性后的负载Pd催化剂表面的吸附物种和表面的程序升温反应,对负载Pd催化剂甲醇深度氧化反应机理进行了探讨.

关键词: 负载钯催化剂, 甲醇氧化, 镧, In-situ FTIR

Abstract: The performance of deep oxidation of methanol on 0.1% Pd supported on alumina was studied by a chromatograph-micro-reactor. The results showed that the addition of La intoγ-Al2O3 could affect the performance of Pd catalyst greatly. Although the presence of La could not lower the light-off temperature of methanol oxidation, the partial oxidation products disappeared. By usingin-situ FTIR, it is shown that La changed the adsorbed species and the methanol deep oxidation mechanism on Pd catalyst.

Key words: Supported palladium catalyst, Methanol oxidation, Lanthanum, In-situ FTIR

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