Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants

Jianwei Li; Xiang Li; Yan Liu; Jie Zhang

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Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants

Selected Papers from the International Chemical Separation Technology Conference (ICSTC) | Updated：2026-01-06

- Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants
- Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants
- 中国化学工程学报（英文版） 2017年25卷第2期页码：171-174
- Affiliations：
  
  State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology,Beijing,China,100029
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2017
- Accepted：
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Jianwei Li, Xiang Li, Yan Liu, 等. Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants[J]. 中国化学工程学报（英文版）, 2017,25(2):171-174.

Jianwei Li, Xiang Li, Yan Liu, Jie Zhang. Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants[J]. , 2017, 25(2): 171-174.
Jianwei Li, Xiang Li, Yan Liu, 等. Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants[J]. 中国化学工程学报（英文版）, 2017,25(2):171-174. DOI：

Jianwei Li, Xiang Li, Yan Liu, Jie Zhang. Removal of mercaptans from light oils using ionic liquid-NaOH aqueous solution as extractants[J]. , 2017, 25(2): 171-174. DOI：

摘要

Abstract

The application of ionic liquids as alternatives to conventional organic solvents in the extraction process has been investigated. In the present study

fourteen species of imidazolium-based ionic liquids were added into the NaOH (aq) to remove the mercaptans. The influences of anion species and cation alkyl chain length of the imidazolium-based ionic liquids on the performance of mercaptan removal from light oils have been discussed. The efficiency of extraction for mercaptans exhibited the order of [Ac

]

[OH

]

≈[Br

]

[BF

]

. The longer alkyl chain imidazolium-based ionic liquids contributed to enhance desulfurization rate of 1-butyl mercaptan. 100% desulfurization rate of 1-butyl mercaptan was achieved by the anion of Ac

ionic liquids and NaOH (aq) at a volume ratio of 40:1 (

(oil):

(ionic liquid)) and a short equilibrium time within 10 min.

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