高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (4): 715.

• 研究简报 • 上一篇    下一篇

Rh2CO2/Al2O3上H2吸附及CO和H2共吸附

陈耀强, 龚茂初, 祝小红, 明虹, 唐水花   

  1. 四川大学化学学院, 成都 610064
  • 收稿日期:2001-03-09 出版日期:2002-04-24 发布日期:2002-04-24
  • 通讯作者: 陈耀强(1953年出生),男,博士,教授,博士生导师,从事吸附态化学及动态学、新催化材料、甲烷的活化与转化和汽车尾气净化催化剂等研究.E-mail:nic7501@sun450.scu.edu.cn E-mail:nic7501@sun450.scu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号:29273117)资助.

Chemisorption of H2 and Coadsorption of H2 and CO on Rh2Co2/Al2O3

CHEN Yao-Qiang, GONG Mao-Chu, ZHU Xiao-Hong, MING Hong, TANG Shui-Hua   

  1. Department of Chemistry, Sichuan University, Chengdu 610064, China
  • Received:2001-03-09 Online:2002-04-24 Published:2002-04-24

关键词: Rh2Co2/Al2O3催化剂, H2吸附, CO和H2的共吸附, 羰基氢化物, FTIR

Abstract: The adsorption of H2 as well as coadsorption of H2 and COon Rh2Co2/Al2O3 catalyst has beenstudied using in situ FTIR dynamic method.The band at 1959 cm-1 for Rh-H vibration on Rh2Co2/Al2O3 (w=3%) was observed and increased in intensity without shift to low wavenumber as H2 coverageincrease.In the dynamic process of CO adsorption on Rh2Co/Al2O3 preadsorbing H2-TP(in H2 and CO),the bands for the gem-dicarbonyl species, the linear COspecies and the bridge carbonyl species were lostand the bands for carbonyl hydrides were observed at 293 K.At about 473 K, the C-O bond of rhodiumcarbonyl hydrides starts to break down and CO hydrogenation reaction occurs.It can be concluded that thescission of C-O bond under the conditions of CO hydrogenation is via rhodium carbonyl hydrides.

Key words: Rh2Co2/Al2O3 catalyst, Adsorption of H2, Coadsorption of CO and H2, Carbonyl hydride, FTIR

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