新型填料式固体酸SO_4^(2-)/Al_2O_3-Al催化合成乙酸乙酯  

STUDY ON NOVEL STRUCTURED SOLID ACIDS SO_4^(2-)/Al_2O_3-Al PACKING FOR CATALYTIC SYNTHESIS OF ETHYL ACETATE

作　　者：杜长海[1] 秦永宁[1] 石秀敏[2] 贺岩峰[2] 马智[1] 

机构地区：[1]天津大学化工学院催化科学与工程系,天津300072 [2]长春工业大学化工系,长春130012

出　　处：《精细石油化工》2004年第1期25-28,共4页Speciality Petrochemicals

基　　金：吉林省科技厅自然科学基金项目 ( 19990 5 5 7)

摘　　要：为了制备催化精馏用填料式催化剂 ,采用铝阳极氧化法和浸渍法制备了新型填料式SO2 -4/Al2 O3 Al固体酸催化剂 ,并用于催化乙醇和乙酸的酯化反应。最佳反应条件为 :醇酸摩尔比 1∶8,催化剂 2 .0 g ,反应温度90～ 10 0℃ ,反应时间 6 .0h ,酯化率 90 .4 0 % ,选择性 10 0 % 。In order to prepare structured catalyst packing for catalytic distillation, a novel solid acid catalyst was prepared by supporting SO 2- 4 onto a thin alumina film that had been formed by anodic oxidation of high-purity aluminium foils. It was used as catalyst to synthesize ethyl acetate. The optimum synthesis conditions were investigated. The molar ratio of the alcohol and acid was 1∶8. The mass of the catalyst was 2.0 g. The reaction time was 6.0 h at reflux temperature. The yield of the ester could reach 90.40%, and the selectivity for the esterification was 100%. The catalyst can be reused directly for 5 times.

关 键 词：固体酸 SO4^2-/Al2O3-Al 催化合成工艺 乙酸乙酯 阳极氧化反应 催化精馏技术 酯化率 

分 类 号：TQ225.24[化学工程—有机化工]