Study on the capture of low pressure SO<sub>2</sub> by imidazole-based ternary deep eutectic solvents

DENG Xiaoxia; GONG Lei; LIU Xiaobang; DENG Dongshun

doi:10.11949/0438-1157.20191266

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Study on the capture of low pressure SO₂ by imidazole-based ternary deep eutectic solvents

Energy and environmental engineering | 更新时间：2026-07-24

- Study on the capture of low pressure SO₂ by imidazole-based ternary deep eutectic solvents
- CIESC Journal Vol. 71, Issue 1, Pages: 368-375(2020)
- 作者机构：
  
  浙江工业大学化学工程学院，浙江杭州 310014
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20191266
  CLC： TQ 028.8
- Received：24 October 2019，
  
  Revised：2019-10-29，
  
  Online First：12 August 2020，
  
  Published：05 January 2020
- 稿件说明：
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邓晓霞, 龚磊, 刘小棒, 邓东顺. 咪唑类三元低共熔溶剂捕集低压SO₂的实验研究[J]. 化工学报, 2020, 71(1): 368-375 DOI: 10.11949/0438-1157.20191266.

DENG Xiaoxia, GONG Lei, LIU Xiaobang, DENG Dongshun. Study on the capture of low pressure SO₂ by imidazole-based ternary deep eutectic solvents[J]. CIESC Journal, 2020, 71(1): 368-375 DOI: 10.11949/0438-1157.20191266.
邓晓霞, 龚磊, 刘小棒, 邓东顺. 咪唑类三元低共熔溶剂捕集低压SO₂的实验研究[J]. 化工学报, 2020, 71(1): 368-375 DOI: 10.11949/0438-1157.20191266. DOI：

DENG Xiaoxia, GONG Lei, LIU Xiaobang, DENG Dongshun. Study on the capture of low pressure SO₂ by imidazole-based ternary deep eutectic solvents[J]. CIESC Journal, 2020, 71(1): 368-375 DOI: 10.11949/0438-1157.20191266. DOI：

摘要

近几年来，以氢键受体（HBA）和氢键供体（HBD）组成的低共熔溶剂（DESs）以其类似于离子液体的性质被认为是一种有潜力的SO

吸附剂。为制备用于低压SO

吸收的容量大、价格合理、循环性能好的低共熔溶剂，选用咪唑(Im)作为功能化组分，以价格低廉的甘油(Gly)、PEG200和乙二醇(EG)作为第二HBD，与作为HBA的氯化胆碱(CC)构建CC-GIy-Im、CC-PEG200-Im、CC-EG-Im三元功能化低共熔溶剂，并用于低压SO

的捕集实验研究。着重考察了第二HBD种类、咪唑含量、温度等因素对DESs吸收SO

的性能影响。结果表明：在所选的第二HBD中，PEG200的性能最佳，其构建的低共熔溶剂密度、黏度适中，热稳定性好，吸收性好；CC-PEG200-Im（1∶2∶7）在40℃下，对1% SO

的吸收量达到0.236 g SO

/g DES；经5次吸收-解吸循环后，低共熔溶剂吸收性能仍然稳定；

H NMR谱图分析结果表明，CC-PEG200-Im对SO

的吸收机理为化学吸收。

Abstract

In recent years

DESs

which is composed of hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD)

is considered as a potential SO

adsorbent due to its properties similar to ionic liquids. To prepare the DESs with large absorption capacity for low pressure SO

reasonable price and good recycling performance

three ternary functionalized DESs of CC-Gly-Im

CC-PEG200-Im

CC-EG-Im were developed using choline chloride (CC) as HBA

imidazole (Im) as functional component

and cheap glycerol (Gly)

PEG200

ethylene glycol (EG) as second HBD. The obtained DESs were further applied for experimental study for low pressure SO

focusing on the type of second HBD

the content of imidazole

and temperature on the absorption performance of SO

. The results showed that PEG200 demonstrated the best property

and its DESs possessed moderate density and viscosity

satisfactory thermal stability and absorption capacity. The maximum absorption of CC-PEG200-Im (1∶2∶7) DESs for 1% SO

at 40℃ reached 0.236 g SO

/g DES. The DESs presented stable absorption performance for SO

after five absorption-desorption cycles. The CC-PEG200-Im could absorb SO

by chemical interactions at the experimental conditions under

H NMR spectrum investigation.

关键词

Keywords

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Study on the capture of low pressure SO2 by imidazole-based ternary deep eutectic solvents

DOI：10.11949/0438-1157.20191266

摘要

Abstract

关键词

Keywords

references

Study on the capture of low pressure SO₂ by imidazole-based ternary deep eutectic solvents