Journal
JOURNAL OF CHEMICAL AND ENGINEERING DATA
Volume 59, Issue 3, Pages 844-849Publisher
AMER CHEMICAL SOC
DOI: 10.1021/je400985u
Keywords
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Funding
- National Natural Science Foundation of China [NSFC 21306088]
- State Key Laboratory of Chemical Engineering (Tsinghua University, China) [SKL-ChE-13A01]
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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.
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