Vapor-Liquid Phase Equilibrium Data of CO2 in Some Physical Solvents from 285.19 K to 313.26 K

被引：36

作者：

Gui, Xia ^{[1
]}

Wang, Wei ^{[1
]}

Wang, Chen Wei ^{[1
]}

Zhang, Ling ^{[1
]}

Yun, Zhi ^{[1
]}

Tang, Zhg ^{[2
]}

机构：

[1] Nanjing Univ Technol, Coll Chem & Chem Engn, Nanjing 210009, Jiangsu, Peoples R China

[2] Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2014年 / 59卷 / 03期

基金：

中国国家自然科学基金;

关键词：

CARBON-DIOXIDE; SOLUBILITY; CAPTURE; PRESSURES; GAS;

D O I：

10.1021/je400985u

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The solubility of CO2 in polyethylene glycol dimethyl ether (NHD), octamethyl cyclotetrasiloxane (D4), and diethyl succinate (DS) was determined at the temperature variations from 285.19 K to 313.26 K up to 6 MPa by the constant-volume method. Then, Henry's law constant (H) based on mole fraction was obtained by linear fitting of the vapor liquid phase equilibrium data, and some thermodynamic properties of solutions were also calculated from the correlation of H. The values of H in NHD, D4, and DS vary from 2.5 MPa to 8 MPa and increase in the following order: DS < D4 < NHD, which is identical to the order of the solvents ability to dissolve CO2. Additionally, Henry's law constant increase to confirm the solubility of CO2 decrease in the corresponding solvents for the pressure range studied.

引用

页码：844 / 849

页数：6

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