Extraction desulfurization of dibenzothiophene with [C3—8mim]Br/FeCl3 ionic liquids

doi:10.3969/j.issn.0438-1157.2013.10.022

CIESC Journal ›› 2013, Vol. 64 ›› Issue (10): 3647-3651.DOI: 10.3969/j.issn.0438-1157.2013.10.022

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Extraction desulfurization of dibenzothiophene with [C_3—8mim]Br/FeCl₃ ionic liquids

ZHANG Juan, LI Junpan, REN Tengjie, HU Yanhui, ZHAO Dishun

School of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China

Received:2013-02-19 Revised:2013-05-03 Online:2013-10-05 Published:2013-10-05
Supported by:
supported by the National Natural Science Foundation of China(21106032).

[C_nmim]Br/FeCl₃型离子液体萃取脱除二苯并噻吩

张娟, 李俊盼, 任腾杰, 胡颜荟, 赵地顺

河北科技大学化学与制药工程学院, 河北石家庄 050018

通讯作者: 张娟(1974-),女,博士,副教授
作者简介:张娟(1974-),女,博士,副教授。
基金资助:
国家自然科学基金项目(21106032)

Abstract

Abstract: Six sorts of [C_3—8mim]Br/FeCl₃ 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/FeCl₃ 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 92% 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%.

Key words: [C_nmim]Br/FeCl₃ ionic liquids, dibenzothiophene, extraction, desulfurization ratio

摘要： 合成了6种咪唑型离子液体[C_3—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12 min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%。

关键词: [C_nmim]Br/FeCl₃离子液体, 二苯并噻吩, 萃取, 脱硫率

CLC Number:

TE624

ZHANG Juan, LI Junpan, REN Tengjie, HU Yanhui, ZHAO Dishun. Extraction desulfurization of dibenzothiophene with [C_3—8mim]Br/FeCl₃ ionic liquids[J]. CIESC Journal, 2013, 64(10): 3647-3651.

张娟, 李俊盼, 任腾杰, 胡颜荟, 赵地顺. [C_nmim]Br/FeCl₃型离子液体萃取脱除二苯并噻吩[J]. 化工学报, 2013, 64(10): 3647-3651.

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Extraction desulfurization of dibenzothiophene with [C_3—8mim]Br/FeCl₃ ionic liquids

[C_nmim]Br/FeCl₃型离子液体萃取脱除二苯并噻吩

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