Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

ABSTRACT

Vapour-liquid equilibrium (VLE) data are reported for five binary systems involving aromatic hydrocarbons (toluene, ethylbenzene, o-xylene, m-xylene, and p-xylene) and tripropylene glycol (2-[2-(2- hydroxypropoxy)propoxy]propan-1-ol). VLE data was determined by using a static method for the binary mixtures at temperatures within 305.15 K to 496.15 K. The p-T-x experimental data obtained were correlated using the NRTL model, in order to obtain the binary interaction parameters for each mixture. We compared the T-x-y diagrams determined based on the NRTL resulted parameters with the diagrams calculated using the UNIFAC predictive model and IDEAL model.We observed differences between the Tx curves calculated with the NRTL model that includes the binary interaction parameters resulting from the experimental VLE data and the T-x curves calculated with UNIFAC predictive model and IDEAL model