Study on performance and mechanism of triethylene glycol dimethyl ether for capturing low concentration SO<sub>2</sub>

YANG Xiaoqing; LIAO Quanfei; YI Yun; YANG Chunliang; ZHAO Tianxiang; HU Xingbang; LIU Fei

doi:10.11949/0438-1157.20200884

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Study on performance and mechanism of triethylene glycol dimethyl ether for capturing low concentration SO₂

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

- Study on performance and mechanism of triethylene glycol dimethyl ether for capturing low concentration SO₂
- CIESC Journal Vol. 71, Issue 11, Pages: 5052-5058(2020)
- 作者机构：
  
  1.贵州大学化学与化工学院，贵州贵阳 550025
  2.绿色化工与清洁能源技术重点实验室，贵州贵阳 550025
  3.南京大学化学化工学院，江苏南京 210023
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20200884
  CLC： TQ 028.8
- Received：03 July 2020，
  
  Revised：2020-08-16，
  
  Online First：03 November 2020，
  
  Published：05 November 2020
- 稿件说明：
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杨小青, 廖泉飞, 易芸, 杨春亮, 赵天翔, 胡兴邦, 刘飞. 三乙二醇二甲醚吸收低浓度SO₂性能及机理研究[J]. 化工学报, 2020, 71(11): 5052-5058 DOI: 10.11949/0438-1157.20200884.

YANG Xiaoqing, LIAO Quanfei, YI Yun, YANG Chunliang, ZHAO Tianxiang, HU Xingbang, LIU Fei. Study on performance and mechanism of triethylene glycol dimethyl ether for capturing low concentration SO₂[J]. CIESC Journal, 2020, 71(11): 5052-5058 DOI: 10.11949/0438-1157.20200884.
杨小青, 廖泉飞, 易芸, 杨春亮, 赵天翔, 胡兴邦, 刘飞. 三乙二醇二甲醚吸收低浓度SO₂性能及机理研究[J]. 化工学报, 2020, 71(11): 5052-5058 DOI: 10.11949/0438-1157.20200884. DOI：

YANG Xiaoqing, LIAO Quanfei, YI Yun, YANG Chunliang, ZHAO Tianxiang, HU Xingbang, LIU Fei. Study on performance and mechanism of triethylene glycol dimethyl ether for capturing low concentration SO₂[J]. CIESC Journal, 2020, 71(11): 5052-5058 DOI: 10.11949/0438-1157.20200884. DOI：

摘要

多羟基醇如丙三醇、乙二醇、聚乙二醇等富含氢键位点，通过氢键相互作用能循环捕集SO

气体。然而，羟基比例更高的丙三醇和乙二醇对SO

的吸收能力远弱于聚乙二醇，这表明除氢键作用之外，可能还存在SO

与醚氧原子间的电荷转移作用。为了证实SO

与醚氧原子间的电荷转移作用，实验选择沸点较高的三乙二醇二甲醚作为SO

的吸收剂。首先采用气体动态单循环法测定了低浓度SO

（体积分数为2010 × 10

-6

）在122.7 kPa和293.15~313.15 K下的汽液相平衡数据，并且基于汽液平衡数据，计算了SO

吸收过程的热力学参数，包括亨利常数、熵变、焓变和Gibbs自由能等。此外，基于紫外光谱、红外光谱和核磁波谱的实验结果，证实了SO

和三乙二醇二甲醚之间的O…S电荷转移相互作用。

Abstract

Polyhydric alcohols such as glycerol

ethylene glycol

polyethylene glycol

etc

are rich in hydrogen bonded sites and can trap SO

gas cyclically through hydrogen bond interactions. Although both glycerol and ethylene glycol have more hydroxyl groups than polyethylene glycol

the absorption capacity of SO

is lower than that of polyethylene glycol

which indicates that in addition to the hydrogen bonding effect

there may be a charge transfer effect between SO

and ether oxy

gen atoms of polyethylene glycol. Herein

to clarify the charge transfer effect between SO

and ether oxygen atoms

triethylene glycol dimethyl ether with a higher boiling point was selected as SO

absorbent. First

the gas-liquid equilibrium data of diluted SO

(2010 × 10

-6

) at 122.7 kPa and 293.15 to 313.15 K were measured by a gas dynamic single cycle method. Then the thermodynamic parameters of the absorption process were calculated based on the SO

solubility data

including Henry

􀆳

s constant

entropy change

enthalpy change and Gibbs free energy. In addition

the O…S charge transfer interaction between SO

and triethylene glycol dimethyl ether was confirmed by using UV-Vis

FTIR and NMR spectroscopy.

关键词

Keywords

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⁰

Study on performance and mechanism of triethylene glycol dimethyl ether for capturing low concentration SO2

DOI：10.11949/0438-1157.20200884

摘要

Abstract

关键词

Keywords

references

Study on performance and mechanism of triethylene glycol dimethyl ether for capturing low concentration SO₂