ZrO2修饰Cu催化剂对甲醇吸附原位红外表征

doi:10.3866/PKU.WHXB201112062

Acta Phys. -Chim. Sin. ›› 2012, Vol. 28 ›› Issue (02): 433-436.doi: 10.3866/PKU.WHXB201112062

• CATALYSIS AND SURFACE SCIENCE • Previous Articles Next Articles

In situ Infrared Characterization of Methanol Adsorption on ZrO₂ Modified Cu Catalysts

WU Gui-Sheng¹, MAO Dong-Sen¹, LU Guan-Zhong¹, CAO Yong², FAN Kang-Nian²

1. Research Institute of Applied Catalysis, Academy of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, P. R. China;
2. Department of Chemistry, Fudan University, Shanghai 200433, P. R. China

Received:2011-10-17 Revised:2011-11-25 Published:2012-01-11
Contact: WU Gui-Sheng, LU Guan-Zhong E-mail:gzhlu@ecust.edu.cn; gswu@sit.edu.cn
Supported by:
The project was supported by the Shanghai Leading Academic Discipline Project, China (J51503) and Key Laboratory Project of Shanghai Molecular Catalysis and Function Materials, China (2009KF06).

Abstract

Abstract: The adsorption and reaction of methanol on Cu and ZrO₂/Cu were investigated using in situ infrared diffuse reflectance spectroscopy, in which the catalysts were reduced at different temperatures in order to change the content of surface oxygen species and investigate the change trends of methanol adsorption and reaction over the catalysts with the oxygen species content. The results show that methanol is adsorbed on the surface of Cu to produce CO₂ via the intermediate of adsorbed formaldehyde, while the intermediate of formate is formed on the surface of ZrO₂/Cu. The production rate of CO₂ via the intermediate becomes slower with the rise of the reduction temperature of the catalysts, illustrating that the content of oxygen species on the surface of the catalysts determines the formation of the intermediate and the reaction rate.

Key words: Methanol adsorption, In situ infrared diffuse reflectance, Cu, ZrO₂/Cu

MSC2000:

O643

WU Gui-Sheng, MAO Dong-Sen, LU Guan-Zhong, CAO Yong, FAN Kang-Nian. In situ Infrared Characterization of Methanol Adsorption on ZrO₂ Modified Cu Catalysts[J].Acta Phys. -Chim. Sin., 2012, 28(02): 433-436.

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