Coupling Process of 1,4-Butanediol Dehydrogenation and Maleic Anhydride Hydrogenation over Cu-Zn-Al Catalyst
ZHAO Xiao-jing,LIU Zong-zhang,JIANG Hao-xi,ZHANG Min-hua(Key Lab for Green Chemical Technology of State Education Ministry,Tianjin R&D Center for Petrochemical Technology,Tianjin University,Tianjin 300072,China)
(Key Lab for Green Chemical Technology of State Education Ministry,Tianjin R&D Center for Petrochemical Technology,Tianjin University,Tianjin 300072,China
Abstract：
The catalyst of Cu-Zn-Al composite oxide system was prepared by co-precipitation.XRD and TPR were used to characterize the catalyst,the influence of catalyst composition,such as Al content,Cu/Zn ratio,on catalytic performance for the coupling process was analyzed,and the optimal composition was obtained.The experiment showed that the catalyst with 20% Al and n(Cu/Zn)=0.5—2.0 have good catalytic performances.The CuO species and its occupation on the catalyst surface were the determining factors for the catalyst activity.Results of XRD,TPR and BET showed that n(Cu/Zn) is responsible for the dispersion of CuO and the surface area of catalyst.The suitable n(Cu/Zn) can improve the selectivity of catalysts.
ZHAO Xiao-jing,LIU Zong-zhang,JIANG Hao-xi,ZHANG Min-hua.Coupling Process of 1,4-Butanediol Dehydrogenation and Maleic Anhydride Hydrogenation over Cu-Zn-Al Catalyst[J]. Chemcial Industry and Engineering, 2008,25(5): 382-385
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2008, Vol. 25 
