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Citation: Chen Ping, Zhu Bo, Zhong Yijun, Luo Mengfei, Li Shaohua, Wu Hongli. Promoter Action of Ag on Cr-Ag/γ-Al₂O₃ Catalyst for CO Oxidation[J]. Chinese Journal of Applied Chemistry, ;1996, 13(4): 89-91. shu

Promoter Action of Ag on Cr-Ag/γ-Al₂O₃ Catalyst for CO Oxidation

Chen Ping ¹ ,
Zhu Bo ¹ ,
Zhong Yijun ¹ ,
Luo Mengfei ¹ ,
Li Shaohua ¹ ,
Wu Hongli ²

1.
1. Catalysis Institute, Hangzhou University, Hangzhou 310028;
2.
2. Central Laboratory, Hangzhou University, Hangzhou 310028

Received Date: 30 October 1995
Available Online: 1 April 1996

A series of γ-Al₂O₃-supported Cr-Ag bimetallic and individual mono-metallic catalysts was prepared by wetness impregnation method.The oxidation activity of CO was determined in a gas flow system. The effect of promoter Ag was studied by BET, XRD and TPR. The activity of Cr/γ-Al₂O₃ catalyst for CO oxidation was relatively poor. As the silver loading increased, the temperature of 100% coversion of CO over Ag/γ-Al₂O₃ catalysts decreased rapidly. The oxidation activity of catalyst was evidently enhanced by the addition of Ag, and increased with the content of Ag. The result of TPR showed that Ag could substantially change the reducibility of catalyst, T_M decreased about 75℃,and the oxidation activity of catalyst was promoted.
- chromic oxide,
- silver oxide,
- alumina,
- supported catalyst,
- reducibility,
- CO,
- oxidation activity
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Promoter Action of Ag on Cr-Ag/γ-Al2O3 Catalyst for CO Oxidation

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Promoter Action of Ag on Cr-Ag/γ-Al₂O₃ Catalyst for CO Oxidation