物理化学学报 >> 1985, Vol. 1 >> Issue (01): 22-31.doi: 10.3866/PKU.WHXB19850104

研究论文 上一篇    下一篇

镍基催化剂上CO和H2O的吸附与反应的红外光谱研究

李锡青; 伏义路; 黄志刚   

  1. 中国科技大学近代化学系表面与催化研究室
  • 收稿日期:1984-06-12 修回日期:1984-10-09 发布日期:1985-02-15

INFRARED STUDY OF ADSORPTION AND REACTION OF CO AND H2O ON Ni CATALYST

Li Xiqing; Fu Yilu Huang; Zhigang   

  1. Department of Modern Chemistry; China University of Science and Technology
  • Received:1984-06-12 Revised:1984-10-09 Published:1985-02-15

PDF

2236

赞

摘要： 本文运用红外光谱研究了CO和H_2O在Ni基催化剂上的吸附和反应规律。证实了H_2O在催化剂上是解离吸附, 以OH的形式吸附在催化剂上, 在OH之间可能有氢键形成。CO有两种吸附态: 线式和桥式。预吸附H_2O使CO线式吸附态几乎消失, 桥式吸附峰红移了约30 cm~(-1)。在不同温度时, 对比了CO或表面碳与H_2O的反应, 发现表面碳更容易同水反应生成甲烷。

Abstract: The adsorption and reaction of CO and H_2O on Ni catalyst were studied using infrared spectroscopy. Some valuable results were obtained.
1. Adsorption of H_2O and CO
Two types of adsorbed CO on Ni catalyst were identified by IR spectroscopy, the linear state (2060 cm~(-1)) and bridged state (1960 cm~(-1)). Above 200 ℃, disproportionation reaction of CO could occur, forming CO_2 and surface carbon.
A wide absorption band at 3600—3100 cm~(-1) was observed when H_2O was adsorbed on the catalyst. The band belongs...