Absorption of CO<sub>2</sub> in a novel ternary deep eutectic solvent

LI Guihua; SHAN Haifang; AI Ning; DENG Dongshun

doi:10.11949/j.issn.0438-1157.20141835

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Absorption of CO₂ in a novel ternary deep eutectic solvent

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- Absorption of CO₂ in a novel ternary deep eutectic solvent
- CIESC Journal Issue S1, Pages: 25-31(2015)
- 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/j.issn.0438-1157.20141835
  CLC： Q420.9
- Online First：30 June 2015，
  
  Published：30 June 2015
- 稿件说明：
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LI Guihua, SHAN Haifang, AI Ning, et al. Absorption of CO₂ in a novel ternary deep eutectic solvent[J]. CIESC Journal, 2015, (S1): 25-31. DOI: 10.11949/j.issn.0438-1157.20141835.
DOI：

LI Guihua, SHAN Haifang, AI Ning, et al. Absorption of CO₂ in a novel ternary deep eutectic solvent[J]. CIESC Journal, 2015, (S1): 25-31. DOI: 10.11949/j.issn.0438-1157.20141835. DOI：

摘要

由N

N-二甲基乙酰胺、氯化胆碱、乙二醇或丙三醇以不同的摩尔比(1:1:3

1:1:4)合成了一系列三元低共熔离子液体(nDMA:nCC:nethylene glycol=1:1:3

1:1:4

nDMA:nCC:nglycerol=1:1:3

1:1:4)。在293.15～323.15 K温度下

间隔10℃

0～600.0 kPa压力范围内

用等温饱和法测量了CO2在三元体系中的溶解度。CO2在体系中的溶解度随压力增大呈线性增大趋势

随温度升高而减小。计算了亨利常数

结果表明

CO2在由N

N-二甲基乙酰胺

氯化胆碱

乙二醇以摩尔比1:1:3合成的三元体系

温度为293.15 K下

亨利常数最小

最小值为2.174 MPa·kg·mol-1。报道了关于CO2吸收的热动力学性质

包括焓变、熵变、Gibbs自由能变。其中

焓变为负值

说明此吸收为放热过程。

Abstract

A series of novel ternary deep eutectic solvents (TDESs) were synthesized from N

N-dimethyl acetamide (DMA)

choline chloride (CC) and ethylene glycol or glycerol with different mole ratios (nDMA:nCC:nethylene glycol=1:1:3

1:1:4

nDMA:nCC:nglycerol=1:1:3

1:1:4). Solubilities of CO2 in TDESs were determined in the temperature range T=293.15—323.15 K with 10℃ intervals under pressure ranging from 0 to 600.0 kPa using the isochoric saturation method. The solubility of CO2 in the liquids increased linearly with increasing pressure and decreased with increasing temperature. Henry's constants were calculated

while TDES obtained from DMA

CC and ethylene glycol with mole ratio 1:1:3 showing the lowest value of 2.174 MPa·kg·mol-1 at 293.15 K. Thermodynamics of CO2 absorption were also calculated

including enthalpy

entropy

Gibbs free energy. The negative enthalpy demonstrated that the process was exothermic.

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Absorption of CO2 in a novel ternary deep eutectic solvent

DOI：10.11949/j.issn.0438-1157.20141835

摘要

Abstract

关键词

Keywords

references

Absorption of CO₂ in a novel ternary deep eutectic solvent