Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

ABSTRACT

In this paper densities, viscosities and refractive indices of four binary mixtures containing methyl ethyl ketone, at atmospheric pressure and in the temperature range from 288.15 K to 333.15 K are reported. From experimental measurements excess molar volumes, viscosity deviations and refractive index deviations are calculated and fitted to the Redlich-Kister equation. For the analysis of molecular interactions present in the mixtures, molar excess Gibbs free energies of activation of viscous flow are also calculated and fitted to the Redlich-Kister polynomial equation. Experimental viscosity data are modeled by friction theory, predictive UNIFAC-VISCO and ASOG-VISCO models and correlative Teja-Rice, Grunberg-Nissan, McAlister, Eyring-UNIQUAC and Eyring-NRTL models. The new CO-CH2O and CO-pyridine interaction parameters are determined for their application in the UNIFAC-VISCO and ASOG-VISCO models.