Solubility of methane and carbon dioxide in ethylene glycol at pressures up to 14 MPa and temperatures ranging from (303 to 423) K

• Published in: The Journal of chemical thermodynamics Vol. 42; no. 5; pp. 684 - 688
• Main Authors: Galvão, A.C., Francesconi, A.Z.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.05.2010; Elsevier
• Subjects: Carbon dioxide; Chemistry; Entropy; Ethylene glycol; Exact sciences and technology; Gas solubility; General and physical chemistry; Henry’s constant; Mathematical analysis; Methane; Saturation; Solubility; Solutions; Solvents; Methane; Ethylene glycol; Gas solubility; Henry’s constant; Carbon dioxide; Gas absorption; Organic solvent; Thermodynamics; Henry constant; Solubility; Physicochemical properties; Henry's constant
• ISSN: 0021-9614; 1096-3626
• DOI: 10.1016/j.jct.2009.12.009

This work reports solubility data of methane and carbon dioxide in ethylene glycol and the Henry’s law constant of each solute in the studied solvent at saturation pressure. The measurements were performed at (303, 323, 373, 398, and 423.15) K and pressures up to 6.3 MPa for mixtures containing carbon dioxide and pressures up to 13.7 MPa for mixtures containing methane. The experiments were performed in an autoclave type phase equilibrium apparatus using the total pressure method (synthetic method). All investigated systems show an increase of gas solubility with the increase of pressure. A decrease of carbon dioxide solubility with the increase of temperature and an increase of methane solubility with the increase of temperature was observed. From the variation of solubility with temperature, the partial molar enthalpy, and entropy change are calculated.