Vapour—liquid equilibrium at elevated pressures from the perturbation theory. II. Binary systems |
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Authors: | Jan Pavlíček Tomáš Boublík |
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Institution: | J. Heyrovský Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, 121 38 Prague 2 Czechoslovakia;Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6 Czechoslovakia |
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Abstract: | Vapour—liquid equilibria in binary systems of non-polar non-spherical molecule compounds were studied theoretically by combining the perturbation theory of convex molecule fluids with a new variant of the conformal solution theory. The recently proposed equation of state of hard convex body mixtures and the corresponding expressions for the contact values of distribution functions were employed to determine the reference thermodynamic functions and the perturbation terms. Ten binary systems, i.e. ArCH4, N2CH4, N2C2H4, N2C2H6, CH4C2H4, CH4C2H6, C2H4C2H6, CO2C2H4, CO2C2H6, and ArCO2 were studied at constant temperatures. Comparison of theoretical predictions with experimental data is given. |
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