Phase equilibrium data for mixtures involving 1,1,2,3,3,3-hexafluoro-1-propene with either propane or n-butane between 312 and 343 K

Abstract

Isothermal vapour–liquid equilibrium data are presented for binary mixtures of 1,1,2,3,3,3-hexafluoro-1-propene with either propane or n-butane in the (312–343)K temperature range. The experimental phase equilibrium data were measured using an apparatus based on the “static-analytic” method. The experimental data were correlated with a thermodynamic model comprising of the Peng–Robinson equation of state with the Mathias–Copeman alpha function, the Wong–Sandler mixing rule, and Non-Random Two-Liquid activity coefficient model. The model provided a very satisfactory correlation of the experimental data for both binary systems.