Solubility of carbon dioxide in binary mixtures of dimethyl sulfoxide and ethylene glycol: LFER analysis

被引：13

作者：

Harifi-Mood, Ali Reza ^{[1
]}

机构：

[1] Kharazmi Univ, Fac Chem, Dept Phys Chem, Tehran, Iran

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2020年 / 141卷

关键词：

Carbon dioxide; Solubility; Henry's constant; Linear free energy relationship; POSTCOMBUSTION CO2 CAPTURE; GAS SOLUBILITY; PRECIPITATION; PRESSURE;

D O I：

10.1016/j.jct.2019.105968

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The solubility of carbon dioxide was determined in dimethyl sulfoxide, ethylene glycol, and their binary mixtures at the temperatures ranging from 298.15 Kto 328.15 K and the pressures ranging from (0 to 6) bar (0 to 0.6 MPa). It was shown that the solubility of CO2 increased with the increasing of pressure while decreased with the increasing of temperature. The Henry's constants and thermodynamic properties of solution were calculated from the solubility data. The solubility and Henry's constant of CO2 in the solvent mixtures increased with increasing the mole fraction of dimethyl sulfoxide. Finally, the dependence of CO2 solubility on solvent properties was investigated using the linear Gibbs energy relationship method. Results showed that solute-solvent interactions in the scale of polarity/polarizability and hydrogen bond acceptor ability of the solvent were the main parameters which control the solubility of CO2 in the solvents. (C) 2019 Elsevier Ltd.

引用

页数：7

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