Thermodynamics of mixtures containing unsaturated hydrocarbons by quasichemical group contributions

The quasichemical group surface interaction method was tested for its ability to correlate and predict vapor-liquid equilibrium (VLE) and molar excess enthalpy (H^E) in binary systems 1-octyne-1-propanol, 1-nonyne-1-propanol, 1-nonyne-1-butanol, 1-butylcyclopentene-nonane, 1-butylcyclopentene-1-butanol and 3-ethylcyclopentene-1-butanol. All computations involve using the few sets of group parameters obtained for CHC/OH by a change of the number of H^E experimental points and the minimization function. For alkylcyclopentene systems, acyclic C=C group parameter as well as those of cyclic C=C and special cyclopentene groups have been used. The results have been compared with those obtained previously by the Wilson and UNIFAC methods.Communicated at the Festsymposium celebrating Dr. Henry V. Kehiaian's 60^th birthday, Clermont-Ferrand, France, 17–18 May 1990