Effect of Relative Humidity on Catalytic Combustion of Toluene over Copper Based Catalysts with Different Supports

方健才; 陈晓; 夏启斌; 奚红霞; 李忠

doi:10.1016/S1004-9541(08)60275-X

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Effect of Relative Humidity on Catalytic Combustion of Toluene over Copper Based Catalysts with Different Supports

Updated：2026-01-06

- Effect of Relative Humidity on Catalytic Combustion of Toluene over Copper Based Catalysts with Different Supports
- Chinese Journal of Chemical Engineering Vol. 17, Issue 5, Pages: 767-772(2009)
- Affiliations：
  
  State Key Lab of Subtropical Building Science, Institute of Chemical Engineering, South China University of Technology,Guangzhou,China,510640
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(08)60275-X
  CLC：
- Published：2009
- Accepted：
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FANG Jiancai, CHEN Xiao, XIA Qibin, XI Hongxia, LI Zhong. Effect of Relative Humidity on Catalytic Combustion of Toluene over Copper Based Catalysts with Different Supports[J]. , 2009, 17(5): 767-772.
DOI：

FANG Jiancai, CHEN Xiao, XIA Qibin, XI Hongxia, LI Zhong. Effect of Relative Humidity on Catalytic Combustion of Toluene over Copper Based Catalysts with Different Supports[J]. , 2009, 17(5): 767-772. DOI： 10.1016/S1004-9541(08)60275-X.

摘要

Abstract

The copper based catalysts

CuO/γ-Al

-cordierite(Cord) and CuO/Cord

were prepared by impregnation method.The catalytic activity of the catalysts was tested in absence and presence of water vapor

and the catalysts were characterized.Temperature program desorption (TPD) experiments of toluene and water on the catalysts were carried out.The influence of water vapor on the activity of the catalysts was discussed.Results showed that addition of the water vapor has a significant negative effect on the catalytic activity of the catalysts.The higher the concentration of the water vapor in feed steam was

the lower the catalytic activity of the copper based catalysts became

which could be mainly ascribed to the competition of water molecules with toluene molecules for adsorption on the catalyst surfaces.TPD experiments showed that the strength of the interaction between water molecules and three catalysts followed the order:CuO/γ-Al

CuO/γ-Al

-CordCuO/Cord.As a consequence of that

the degree of degradation in the catalytic activity of these three catalysts by the water vapor followed the order:CuO/γ-Al

CuO/γ-AAl

-CordCuO/Cord.However

the negative effect of the water vapor was reversible.

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