磷酸基咪唑离子液体脱除煤焦油柴油馏分中的氮化物

doi:10.16085/j.issn.1000-6613.2016.04.018

化工进展 ›› 2016, Vol. 35 ›› Issue (04): 1081-1086.DOI: 10.16085/j.issn.1000-6613.2016.04.018

磷酸基咪唑离子液体脱除煤焦油柴油馏分中的氮化物

苏晓琳, 宋军, 杨敬一, 徐心茹

华东理工大学化工学院, 上海 200237

收稿日期:2015-09-14 修回日期:2015-11-02 出版日期:2016-04-05 发布日期:2016-04-05
通讯作者: 杨敬一,副教授,研究方向为化学工艺、石油与能源化工.E-mail:jyyang@ecust.edu.cn.
作者简介:苏晓琳(1989-),女,硕士研究生,研究方向为化学工艺、石油与能源化工.E-mail:xiaolin_su@163.com.

Extractive denitrification of coal tar diesel fraction using phosphate-based alkylimidazolium ionic liquids

SU Xiaolin, SONG Jun, YANG Jingyi, XU Xinru

School of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China

Received:2015-09-14 Revised:2015-11-02 Online:2016-04-05 Published:2016-04-05

摘要/Abstract

摘要： 研究了不同磷酸基咪唑离子液体对煤焦油柴油馏分中氮化物的脱除效果.分别以磷酸酯和磷酸二氢根为阴离子合成了烷基碳链长度不同的咪唑磷酸酯和咪唑磷酸二氢盐离子液体,考察了不同条件下离子液体对煤焦油柴油馏分的脱氮效果.结果表明,酸性咪唑磷酸二氢盐离子液体脱氮效果优于咪唑磷酸酯离子液体,1-丁基-3-甲基咪唑磷酸二氢盐([BMim]H₂PO₄)离子液体的脱氮效果最佳.在剂油质量比为0.2、反应温度为40℃、反应时间和静置时间均为30min的条件下,[BMim]H₂PO₄对煤焦油柴油馏分的脱氮率为92.3%,循环使用5次后仍具有稳定的脱氮效果.

关键词: 磷酸基, 离子液体, 煤焦油柴油馏分, 脱氮

Abstract: Two series phosphate-based alkylimidazolium ionic liquids (ILs), dialkyl and dihydrogen phosphate alkylimidazolium ILs were prepared and used to remove nitrogen compounds in the coal tar diesel fraction by extraction. The denitrification effect were studied under different conditions. The results indicate that dihydrogen phosphate alkylimidazolium ILs have a higher denitrification rate for both basic and non-basic nitrogen compounds than dialkyl phosphate alkylimidazolium ILs due to the complexation. The best denitrification rate can reach 92.3% using 1-butyl-3-methylimidazolium dihydrogen phosphate ([BMim]H₂PO₄) ILs as the extraction agent under the optimum conditions, with which the mass ratio of ILs to oil is 0.2, temperature is 40℃, reaction and stratification time are both 30min. [BMim]H₂PO₄ ILs performed stably in nitrogen removal of coal tar diesel fraction, and the denitrification rate remained almost no change even after five times reuse.

Key words: phosphate, ionic liquids, coal tar diesel fraction, denitrification

中图分类号:

TE664

苏晓琳, 宋军, 杨敬一, 徐心茹. 磷酸基咪唑离子液体脱除煤焦油柴油馏分中的氮化物[J]. 化工进展, 2016, 35(04): 1081-1086.

SU Xiaolin, SONG Jun, YANG Jingyi, XU Xinru. Extractive denitrification of coal tar diesel fraction using phosphate-based alkylimidazolium ionic liquids[J]. Chemical Industry and Engineering Progree, 2016, 35(04): 1081-1086.

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磷酸基咪唑离子液体脱除煤焦油柴油馏分中的氮化物

Extractive denitrification of coal tar diesel fraction using phosphate-based alkylimidazolium ionic liquids

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