Modelling of volumetric properties of binary and ternary mixtures by CEOS, CEOS/Ge and empirical models

Although many cubic equations of state coupled with van der Waals-one fluid mixing rules including temperature dependent interaction parameters are suf- ficient for representing phase equilibria and excess properties (excess molar enthal- py H E , excess molar volume V E , etc.), difficulties appear in the correlation and pre- diction of thermodynamic properties of complex mixtures at various temperature and pressure ranges. Great progress has been made by a new approach based on CEOS/G E models. This paper reviews the last six-year of progress achieved in mo- delling of the volumetric properties for complex binary and ternary systems of non-ele- ctrolytes by the CEOS and CEOS/G E approaches. In addition, the vdW1 and TCBT models were used to estimate the excess molar volume V E of ternary systems me- thanol + chloroform + benzene and 1-propanol + chloroform + benzene, as well as the corresponding binaries methanol + chloroform, chloroform + benzene, 1-propa- nol + chloroform and 1-propanol + benzene at 288.15-313.15 K and atmospheric pressure. Also, prediction of V E for both ternaries by empirical models (Radojkovic, Kohler, Jackob-Fitzner, Colinet, Tsao-Smith, Toop, Scatchard, Rastogi) was performed.