[C_nmim]Br/FeCl_3型离子液体萃取脱除二苯并噻吩  

Extraction desulfurization of dibenzothiophene with [C_(3-8)mim]Br/FeCl_3 ionic liquids

作　　者：张娟[1] 李俊盼[1] 任腾杰[1] 胡颜荟[1] 赵地顺[1] 

机构地区：[1]河北科技大学化学与制药工程学院,河北石家庄050018

出　　处：《化工学报》2013年第10期3647-3651,共5页CIESC Journal

基　　金：国家自然科学基金项目(21106032)~~

摘　　要：合成了6种咪唑型离子液体[C3—8mim]Br/FeCl3,采用红外光谱和拉曼光谱对其进行表征,并考察了离子液体对二苯并噻吩的萃取脱除效果。结果发现,[C3mim]Br/FeCl3的萃取脱硫效果最佳,升高温度和增大剂油比均有利于脱硫率的提高,剂油比1∶1(体积比)时,萃取时间达到12min就可使脱硫率高达92%。且萃取反应完成后,离子液体不做处理继续重复使用,重复使用5次,脱硫率可以达到60%。Six sorts of [-C3 8mim]Br/FeC13 ionic liquids were synthesized, and characterized with FT-IR and Raman spectroscopy. The extraction performance of ionic liquids during the removal of dibenzothiophene （DBT） was investigated. The extraction of DBT with [-C3mim] Br/FeC13 was the best. An increase of volume ratio of ionic liquid to oil and a higher temperature benefited the desulfurization performance. The removal ratio of DBT was up to 920//00 in 12 min and with volume ratio of ionic liquid to oil 1 ： 1. Reacted ionic liquid without treatment was used again for 5 times, and the removal ratio of DBT decreased gradually to 60%.

关 键 词：[Cnmim]Br FeCl3离子液体 二苯并噻吩 萃取 脱硫率 

分 类 号：TE624[石油与天然气工程—油气加工工程]