HZSM-5催化乙酸环己酯水解反应  

Hydrolyzation of Cyclohexyl Acetate Over HZSM-5Catalyst

作　　者：靳敬敬 李芳[1] 杨丽红[1] 张东升[1] 薛伟[1] 王延吉[1] 

机构地区：[1]河北工业大学化工学院河北省绿色化工与高效节能重点实验室,天津300130

出　　处：《石油学报（石油加工）》2014年第1期169-174,共6页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(21236001;21176056;21106031);河北省自然科学基金项目(B2011202139);河北省重大技术创新项目(12275603Z)资助

摘　　要：考察了不同反应条件下加入酸性离子液体[HSO3bmim]HSO4前后HZSM-5催化乙酸环己酯水解制备环己醇反应。结果表明,未加入[HSO3bmim]HSO4时,因乙酸环己酯热分解而生成的副产物环己烯选择性可达73.0%;加入[HSO3bmim]HSO4后,目的产物环己醇选择性增加,在适宜条件下,乙酸环己酯转化率为81.6%,环己醇选择性为79.7%。[HSO3bmim]HSO4的加入抑制了HZSM-5表面积炭的生成,提高了催化剂的重复使用性能。Hydrolyzation of cyclohexyl acetate to cyclohexanol over HZSM-5 catalyst was studied under different conditions before and after adding acidic ionic liquid [HSO3bmim] HSO4.It was found that cyclohexene,which came from the pyrolysis of cyclohexyl acetate,was the main sideproduct and the selectivity to cyclohexene was up to 73.0% in cyclohexyl acetate hydrolyzation over HZSM-5 catalyst without adding [HSO3bmim]HSO4.The addition of [HSO3bmim]HSO4 to the reaction could increase the selectivity to the target product cyclohexanol.Under the optimized conditions,cyclohexyl acetate conversion was 81.6% with 79.7% cyclohexanol selectivity.Moreover,the addition of [HSO3 bmim] HSO4 restricted the formation of deposited coke on HZSM-5 and then increased its stability for repeated use.

关 键 词：环己醇 乙酸环己酯 水解 环己烯 离子液体 

分 类 号：O643.3[理学—物理化学] TQ233.1[理学—化学]