The vapor-liquid phase equilibria of the binary system of CO2-C2H5OH were measured for four isotherms between 60 degreesC and 180 degreesC under the pressure range of 5.0 MPa to 14.5 MPa, The measurements were carried out in a cylindrical autoclave with a moveable piston and a window allowing observation. The compositions, densities and molar volumes of the two coexisting phases are presented. The critical values T-c, p(c), x(c) were predicted. We have correlated phase equilibrium data with the Peng-Robinson equation of state and the Wong-Sandle mixture combination rule for this system. The calculated results agree fairly with the experimental data.
Acta Physico-Chimica Sinica