Sulfur dioxide absorption by PEG-based functionalized ionic liquids

CHEN Ying; WANG Jianying; LIU Chao; JIANG Haichao; LIU Yumin; HU Yongqi

doi:10.11949/j.issn.0438-1157.20141935

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Sulfur dioxide absorption by PEG-based functionalized ionic liquids

更新时间：2025-12-10

- Sulfur dioxide absorption by PEG-based functionalized ionic liquids
- CIESC Journal Issue S1, Pages: 332-337(2015)
- 作者机构：
  
  河北科技大学化学与制药工程学院,河北,石家庄,050018
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20141935
  CLC： 647.32
- Online First：30 June 2015，
  
  Published：30 June 2015
- 稿件说明：
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CHEN Ying, WANG Jianying, LIU Chao, et al. Sulfur dioxide absorption by PEG-based functionalized ionic liquids[J]. CIESC Journal, 2015, (S1): 332-337.
DOI：

CHEN Ying, WANG Jianying, LIU Chao, et al. Sulfur dioxide absorption by PEG-based functionalized ionic liquids[J]. CIESC Journal, 2015, (S1): 332-337. DOI： 10.11949/j.issn.0438-1157.20141935.

摘要

合成一系列含有长醚链的PEG基咪唑对甲苯磺酸盐(PEG基功能化离子液体)

检测其脱硫与再生性能

并测定其脱硫过程中物性(密度、黏度和表面张力)变化。结果表明

PEG基功能化离子液体具有良好的脱硫与再生性能

而且该离子液体的脱硫性能随醚链增长而增强

20℃时SO2与离子液体摩尔比达到5.51以上

吸收的SO2在80℃条件下可彻底解吸。由1H NMR图谱和Raman光谱分析结果表明

PEG基咪唑功能化离子液体对SO2的吸收为物理吸收。脱硫后的PEG基功能化离子液体密度增大

表面张力减小

黏度较脱硫之前显著降低。

Abstract

A series of PEG-based imidazolium toluenesulfonates (PEG-based functionalized ionic liquids) with long ether chain were synthesized and their ability to reversibly absorb gaseous sulfur dioxide was investigated. Physical properties (densities

surface tensions and viscosities) of the ILs had been measured during absorption process. All the ILs showed good absorption and regeneration capacity. The absorption capacity of ILs increased with increasing length of ether chain on the cation. The absorption capacity achieved more than 5.51 mole SO2 per mole IL at 20℃

and the absorbed SO2 gas can be readily and completely desorbed from the ILs at 80℃. The new ILs could absorb SO2 by physical interactions at the experimental conditions under 1H NMR and Raman spectrum investigation. Densities of the ILs increased when the ILs absorbed SO2 and turned to be saturated

at same time

surface tensions decreased and viscosities lowered sharply.

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