Al-MCM-41介孔分子筛催化对甲酚叔丁基化反应的研究  

Tert-butylation of p-cresol catalyzed by Al-MCM-41 mesoporous molecular sieves

作　　者：于心玉[1] 刘彩华[1] 程文萍[1] 杨建国[1] 何鸣元[1] 

机构地区：[1]华东师范大学化学系上海市绿色化学与化工过程绿色化重点实验室,上海200062

出　　处：《燃料化学学报》2006年第6期757-760,共4页Journal of Fuel Chemistry and Technology

基　　金：上海科学技术发展基金(03DJ14005)

摘　　要：Mesoporous molecular sieves Al-MCM-41 with n（SiO2）/n（Al2O3） ratio being 20,50 and 100 were prepared.As proved by X-ray diffraction（XRD） patterns and the N2 physical sorption,the as-synthesized Al-MCM-41 exhibited typical hexagonal structure,large surface areas and narrow pore distribution.The performance of HAl-MCM-41 as catalyst for tert-butylation of p-cresol with methyl tert-butyl-ether（MTBE） was then investigated.The effects of temperature,weight hourly space velocity（WHSV） and the feed ratio n（MTBE）/n（p-cresol） on p-cresol conversion and product selectivity were examined.The results showed that mesoporous HAl-MCM-41 molecular sieves（n（SiO2）/n（Al2O3） = 20） is an efficient catalyst with high activity,selectivity and stability for the synthesis of 2-tert-butyl-p-cresol from p-cresol and MTBE by tert-butylation.Mesoporous molecular sieves Al-MCM-41 with n（ SiO2 ）/n（ Al2O3 ） ratio being 20, 50 and 100 were prepared. As proved by X-ray diffraction （XRD） patterns and the N2 physical sorption, the as-synthesized Al- MCM-41 exhibited typical hexagonal structure, large surface areas and narrow pore distribution. The performance of HAl-MCM-41 as catalyst for tert-butylation of p-cresol with methyl tea-butyl-ether （MTBE） was then investigated. The effects of temperature, weight hourly space velocity （WHSV） and the feed ratio n（MTBE）/n （p-cresol） on p-cresol conversion and product selectivity were examined. The results showed that mesoporous HAl-MCM-41 molecular sieves （ n（ SiO2 ）/n（ Al2O3 ） = 20） is an efficient catalyst with high activity, selectivity and stability for the synthesis of 2-tert-butyl-p -cresol from p -cresol and MTBE by tert-butylation.

关 键 词：HAl-MCM-4介孔分子筛 对甲酚 甲基叔丁基醚 2-叔丁基对甲酚 催化 

分 类 号：TQ225.51[化学工程—有机化工]