γ-Al_2O_3催化间甲酚和丙烯烷基化合成百里香酚  

SYNTHESIS OF THYMOL FROMm-CRESOL AND PROPYLENE WITHγ-Al_2O_3 CATALYSTS

作　　者：何媛媛[1] 张伟[1] 鲁墨弘[1] 李明时[1] 单玉华[1] 

机构地区：[1]常州大学石油化工学院,江苏常州213164

出　　处：《精细石油化工》2014年第3期5-10,共6页Speciality Petrochemicals

基　　金：国家自然科学基金(20976076;21307009)

摘　　要：采用固定床反应装置,以γ-Al2O3为催化剂,以间甲酚和丙烯为原料合成了3-甲基-6异丙基苯酚,实验考察了催化剂孔径、原料空速、反应温度等对反应性能的影响。确定的最佳反应条件为:以平均孔径为7.48nm的大孔γ-Al2O3为催化剂,反应温度为250℃,间甲酚与丙烯的摩尔比为1∶2,空速为0.87mL/(g·h),在此条件下,间甲酚转化率为78.8%,产物选择性为92.6%,收率为73.0%。Synthesis of thymol from m-cresol and propylene over γ-Al2O3 catalysts was investigated in a fixed bed reactor.The influences of the pore size of catalysts,space velocity and reaction temperature on catalytic performance were investigated.The result showed that the optimized reaction conditions were as follows：γ-Al2O3 with average pore size of 7.48 nm was used as catalyst,m-cresol and propylene were used as raw materials with the molar ratio of 1 ∶ 2,space velocity of m-cresol was 0.87 mL/（g · h） and the reaction temperature was 250 ℃.Under these conditions,the conversion of mcresol was 78.8％ with the selectivity of thymol of 92.6％,resulted in the yield of thymol of 73.0％.

关 键 词：氧化铝 间甲酚 丙烯 百里香酚 

分 类 号：TQ243.12[化学工程—有机化工]