Azeotropic states in the CO2–C2H6 mixture from the hard sphere Lennard-Jones quadrupolar molecular model

Abstract

Azeotropic states and phase equilibria for the CO2–C2H6 mixture are studied by the application of thermodynamic perturbation theory to the hard sphere Lennard-Jones quadrupolar molecular model. It is shown that theory can predict both phase equilibria and the azeotropic qualitative behavior observed in the real mixture.