High capacity absorption of SO<sub>2</sub> using imidazole ionic liquid mixtures

ZHANG Yating; XIONG Wenjie; ZHAO Tianxiang; YAO Chenfei; DING Yucheng; ZHANG Xiaomin; WU Youting; HU Xingbang

doi:10.11949/0438-1157.20200790

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High capacity absorption of SO₂ using imidazole ionic liquid mixtures

Celebration Column for School of Chemistry and Chemical Engineering\, Nanjing University | 更新时间：2026-07-24

- High capacity absorption of SO₂ using imidazole ionic liquid mixtures
- CIESC Journal Vol. 71, Issue 11, Pages: 5035-5042(2020)
- 作者机构：
  
  1.南京大学化学化工学院，江苏南京 210023
  2.贵州大学化学与化工学院，贵州贵阳 550025
  3.贵州大学绿色化工与清洁能源技术重点实验室，贵州贵阳 550025
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200790
  CLC： O 69;TQ 424.3
- Received：22 June 2020，
  
  Revised：2020-09-11，
  
  Online First：03 November 2020，
  
  Published：05 November 2020
- 稿件说明：
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张雅婷, 熊文杰, 赵天翔, 姚晨飞, 丁宇宬, 张效敏, 吴有庭, 胡兴邦. 咪唑类离子液体混合物用于二氧化硫高效吸收[J]. 化工学报, 2020, 71(11): 5035-5042

ZHANG Yating, XIONG Wenjie, ZHAO Tianxiang, YAO Chenfei, DING Yucheng, ZHANG Xiaomin, WU Youting, HU Xingbang. High capacity absorption of SO₂ using imidazole ionic liquid mixtures[J]. CIESC Journal, 2020, 71(11): 5035-5042 DOI: 10.11949/0438-1157.20200790.
张雅婷, 熊文杰, 赵天翔, 姚晨飞, 丁宇宬, 张效敏, 吴有庭, 胡兴邦. 咪唑类离子液体混合物用于二氧化硫高效吸收[J]. 化工学报, 2020, 71(11): 5035-5042 DOI： 10.11949/0438-1157.20200790.

ZHANG Yating, XIONG Wenjie, ZHAO Tianxiang, YAO Chenfei, DING Yucheng, ZHANG Xiaomin, WU Youting, HU Xingbang. High capacity absorption of SO₂ using imidazole ionic liquid mixtures[J]. CIESC Journal, 2020, 71(11): 5035-5042 DOI: 10.11949/0438-1157.20200790. DOI：

摘要

开发易制备、价格便宜、面向SO

气体高效分离的离子液体（ILs），是当前ILs从实验探索迈向工业应用的难点与重大挑战。合成了不同摩尔比（3∶1、2∶1、1∶1、1∶2和1∶3）的1-乙基-3-甲基咪唑氯盐（[Emim

]

[Cl

]

）和1-乙基-3-甲基咪唑乙酸盐（[Emim

]

[OAc

]

）的离子液体混合物[Emim

]

[Cl

]

[OAc

]

，在测定其密度、黏度、热稳定性等基本物性数据的基础上，研究了[Emim

]

[Cl

]

[OAc

]

混合物在不同温度和SO

分压下的SO

吸收能力。结果表明，[Emim

]

[Cl

]

[OAc

]

能够有效地捕获SO

。[Emim

]

[Cl

]

与[Emim

]

[OAc

]

之间存在协同促进作用，有利于实现SO

高效吸收。[Emim

]

[Cl

]

0.33

[OAc

]

0.66

混合液在1.0和0.2 atm（1 atm=101325 Pa）下捕获SO

量分别为（1.34±0.08）和（0.74±0.05） g/g，与现有结果相比，混合物在SO

捕获方面有明显优势。此外，这些离子液体混合物对二氧化硫的吸收和解吸具有良好的可逆性。

Abstract

The capture of sulfur dioxide (SO

) with readily available and cost-effective ionic liquids (ILs) is one of the challenges for the application of ILs. Here

we synthesized the ILs mixtures with different molar ratios (3∶1

2∶1

1∶1

1∶2

and 3∶1) of 1-ethyl-3-methylimidazolium chloride ([Emim

]

[Cl

]

) and 1-ethyl-3-methylimidazolium acetate ([Emim

]

[OAc

]

) to study their SO

absorption capacities. The SO

solubilities in these mixtures were investigated under different conditions. The SO

absorption capacities of [Emim

]

[Cl

]

[OAc

]

at different temperatures and SO

partial pressure were measured. The results show that ILs can effectively capture SO

. There exists a synergistic promotion effect between [Emim

]

[Cl

]

and [Emim

]

[OAc

]

resulting in quite high SO

absorption capacity. The [Emim

]

[Cl

]

0.33

[OAc

]

0.66

mixture can capture SO

(1.34±0.08) and (0.74±0.05) g/g at 1.0 and 0.2 atm(1 atm=101325 Pa)

respectively. Comparing with the reported data

[Emim

]

[Cl

]

[OAc

]

mixtures show obvious advantage for SO

capture. In addition

these ionic liquid mixtures have good reversibility for the absorption and desorption of sulfur dioxide.

关键词

Keywords

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⁰

High capacity absorption of SO2 using imidazole ionic liquid mixtures

DOI：10.11949/0438-1157.20200790

摘要

Abstract

关键词

Keywords

references

High capacity absorption of SO₂ using imidazole ionic liquid mixtures