Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Isobaric vapor-liquid Equilibrium (VLE) data for dimethyl oxalate + methanol and methanol + 1,2-butanediol binary systems, as well as the VLE for dimethyl oxalate + methanol + 1,2-butanediol ternary system have been determined using an Ellis Equilibrium distiller at 101.325 kPa. The thermodynamic consistency tests of the two binary experimental VLE data for dimethyl oxalate + methanol and methanol + 1,2-butanediol were performed according to a statistical method and Herington's method. The two binary experimental data were correlated by the Wilson, non-random two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) activity coefficient models integrated in the authorized Aspen Plus software with the maximum average absolute deviations of 1.23 K for temperature and 0.389 for vapor phase composition. And the binary component interaction parameters were also obtained by this regression. Based on these calculated results, the corresponding binary interaction