Ce^(4+)-S_2O_8^(2-)-SBA-15催化剂合成乙酸正丁酯  

Synthesis of n-Butyl Acetate Catalyzed by Ce^(4+)-S_2O_8^(2-)-SBA-15

作　　者：尹燕磊[1] 田志茗[1] 邓启刚[1] 丁坤鹏[1] 

机构地区：[1]齐齐哈尔大学化学与化工学院,黑龙江齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2008年第1期4-7,共4页Journal of Qiqihar University(Natural Science Edition)

摘　　要：本文采用无溶剂法将Ce(SO4)2、(NH4)2S2O8与煅烧的主体材料SBA-15分子筛进行人工研磨混合后焙烧,制备了Ce4+-S2O82--SBA-15催化剂。将催化剂应用于冰乙酸与正丁醇反应合成乙酸正丁酯的酯化反应中,采用正交实验确定较优的工艺条件为:反应时间120min,n冰乙酸∶n正丁醇=1∶1.2,催化剂用量为0.0375g(相当于冰乙酸质量的5%),在此条件下乙酸正丁酯反应产率在95.13%。实验表明所合成的固体酸催化剂具有良好的催化性能,具有可重复使用性能。In this paper, Ce^4＋-S2O8^2--SBA-15 composite material was prepared by a solvent-free method ,in the method, Ce^4＋ and S2O8^2- were highly dispersed in SBA-15 by manually grinding the corresponding precursor salts and the host.n-Butyl acetate was synthetized from acetic acid and n-butanol, using Ce^4＋-S2O8^2--SBA-15 as the catalyst. The optimum conditions were determined by orthogonal experiments,which were molar ratio of acetic acid to n-butanol 1：1.2,amount of catalyst 5%,and reaction time 2h.The yield of n-butyl acetate could reach 95.13%. The results showed that the solid acid had higher catalytic activity. The catalyst could be reused for many times.

关 键 词：介孔分子筛Ce^4+-S2O8^2--SBA-15催化酯化反应乙酸正丁酯 

分 类 号：TQ316.33[化学工程—高聚物工业]