Activity coefficients at infinite dilution of hydrocarbons in glycols: Experimental data and thermodynamic modeling with the GCA-EoS
GONZÁLEZ PRIETO, MARIANA; WILLIAMS-WYNN, MARK D.; BAHADUR, INDRA; SÁNCHEZ, FRANCISCO A.; MOHAMMADI, AMIR H.; PEREDA, SELVA; RAMJUGERNATH, DERESH
JOURNAL OF CHEMICAL THERMODYNAMICS
ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD
Año: 2017 vol. 105 p. 226 - 237
The infinite dilution activity coefficients for 12 non-polar hydrocarbon solutes in the solvents, monoethylene and diethylene glycol, were measured using the gas-liquid chromatography technique. Pre-saturation of the carrier gas was required to avoid solvent loss from the chromatographic column during the measurements that were carried out at T = (303.15, 313.15 and 323.15) K for monoethylene glycol and at T = (304.15, 313.15 and 323.15) K for diethylene glycol. The solutes investigated include n-alkanes, 1-alkenes, and cycloalkanes. The new data are compared with the highly scattered data that is available in the open literature. Finally, these highly non-ideal systems are modeled with the GCA-EoS.