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The Effect of ZnO and BaO on the Thermal Stability of CuO/γ-Al_2O_3 Catalyst

Xu Jinsong (Department of Chemical and Petroleum Industry, Jiangsu Province, Nanjing 210024)Wang Ren(Research Institute of Industrial Catalysis, East China Institute of Chemical Technology, Shanghai 200237)  
The effect of ZnO and BaO additives on the thermal stability of CuO/γ-Al_2O_3 catalyst was studied, using XRD, BET and SEM. The results indicated that ZnO and BaO could improve the thermal stability of the catalyst to some extent. ZnAl_2O_4 produced from ZnO with γ-Al_2O_3 prevented the solid-reaction of CuO with the carrier γ-Al_2O_3 and inhibited the heat-shrink of the carrier, while BaO dispersed the actire component CuO, and suppressed the sintering of CuO.
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