Cu-Zn-Ti催化剂上顺酐气相催化加氢制备γ-丁内酯  

Gas-phase hydrogenation of maleic anhydride to γ-butyrolactone over Cu-Zn-Ti catalysts

作　　者：胡童杰[1] 张瑞超[1] 沈玉堂[1] 殷恒波[1] 姜廷顺[1] 张锡凤[1] 

机构地区：[1]江苏大学化学化工学院,江苏镇江212013

出　　处：《工业催化》2006年第9期41-45,共5页Industrial Catalysis

基　　金：教育部教育基金项目(2003406);江苏省教育基金资助项目(200470)

摘　　要：通过共沉淀法制备了Cu-Zn-Ti系列催化剂,并对还原前后的样品进行了XRD、XPS、TPR以及BET等表征分析。结果表明,Cu-Zn-Ti催化剂催化顺酐加氢制备γ-丁内酯的活性与选择性和催化剂的原子配比有关。铜含量较低时,CuO与ZnO及TiO2之间存在强的相互作用。铜含量较高时,存在游离的CuO。催化剂还原后,铜以Cu0形式存在。当CuO以表面结合形态存在时,还原得到的Cu0有利于顺酐深加氢反应的进行。Cu-Zn-Ti catalysts were prepared by coprecipitation method. The calcined and reduced Cu- Zn-Ti catalysts were characterized by X-ray diffraction （XRD）, X-ray photoelectron spectroscopy （XPS）, temperature-programmed reduction （TPR） and BET . It was shown that there was an optimum composition of Cu-Zn-Ti for catalyzing hydrogenation of maleic anhydride to γ-butyrolactone, with satisfactory activity and selectivity. At lower copper content, there existed strong interaction between CuO species and ZnO and TiO2 ; at higher copper content, there existed bulk CuO species. Copper existed in metallic copper （Cu°） in all Cu-Zn-Ti catalysts after reduction. When CuO existed in surface-bonding state, Cu°produced by reduction favored deep hydrogenation of maleic anhydride.

关 键 词：顺酐 Γ-丁内酯 加氢 铜系催化剂 二氧化钛 

分 类 号：TQ426.94[化学工程] TQ245.23