SO_4^(2-)/SnO_2-CeO_2固体超强酸催化合成乙酸松油酯  

Synthesis of Terpinyl Acetate over SO_4^(2-)/SnO_2-CeO_2 Solid Superacid Catalyst

作　　者：郭海福[1] 朱正峰[1] 闫鹏[1] 吴燕妮[1] 李淑敏[1] 王兰英[1] 

机构地区：[1]肇庆学院轻工化学系,广东肇庆526061

出　　处：《石油化工》2007年第6期565-569,共5页Petrochemical Technology

基　　金：广东省高校自然科学研究项目(Z03084);广东省科技厅资助项目(2005B40703004)

摘　　要：采用溶胶-凝胶法制备了SO42-/SnO2-CeO2固体超强酸催化剂,采用X射线衍射和热重-差热分析方法对催化剂进行了表征。用SO42-/SnO2-CeO2固体超强酸催化剂催化松油醇与乙酸酐进行酯化反应合成乙酸松油酯,考察了松油醇与乙酸酐的摩尔比、反应温度、反应时间和催化剂用量对酯化反应的影响。实验结果表明,适宜的反应条件为:松油醇与乙酸酐的摩尔比1.0∶1.2,反应温度50℃,反应时间3.5h,催化剂用量(以松油醇的质量计)3%。在该条件下,松油醇转化率达到98%以上,乙酸松油酯选择性为82.4%。SO42-/SnO2-CeO2固体超强酸催化剂具有较好的再生性能。Terpinyl acetate, a traditional essence, was synthesized from terpineol and acetic anhydride over SO4^2-/SnO2-CeO2 solid superacid catalyst. The catalyst was prepared by sol - gel method, and was characterized by means of XRD and TG - DTA. Influences of mole ratio of terpineol to acetic anhydride, reaction temperature, reaction time and catalyst dosage on reaction were investigated. Under optimal conditions： mole ratio of terpineol to acetic anhydride 1.0 ： 1.2, reaction temperature 50 ℃, reaction time 3.5 h and catalyst mass fraction in terpineol 3 %, conversion of terpineol is more than 98% and selectivity to terpinyl acetate reaches 82.4%. Reusability of SO4^2-/SnO2-CeO2 solid superacid catalyst is promising.

关 键 词：氧化锡 氧化铈 固体超强酸催化剂 乙酸酐 松油醇 乙酸松油酯 

分 类 号：TQ426.8[化学工程]