Activity coefficients at infinite dilution of hydrocarbons in glycols: experimental data and thermodynamic modeling with the GCA-EoS

MARIANA GONZÁLEZ PRIETO; MARK D. WILLIAMS-WYNN; INDRA BAHADUR; FRANCISCO A. SÁNCHEZ; AMIR H. MOHAMMADI; SELVA PEREDA; DERESH RAMJUGERNATH

JOURNAL OF CHEMICAL THERMODYNAMICS

ACADEMIC PRESS LTD-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2017 vol. 105 p. 226 - 237

0021-9614

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.