A new algorithm, based on the solution of groups model, is proposed to predict liquid-phase activity coefficients. This method is not an extension of the so-called ASOGmodel but is rather a simple application of the solution of groups model. The molecular activity coefficients of solid-liquid equilibria were calculated directly from the correlated vapor-liquid equilibria of the other component pairs, which consisted of the same group as solid-liquid equilibria. This method was successfully used for predicting the solid-liquid equilibria of binary systems which included naphthalene as one component.
Summary:The group Wilson parameters to predict liquid phase activity coefficients by the Analytical Solutions of Groups model for the systems consisting of CH2 groups and OH groups were determined using isothermal vapor-liquid equilibrium data of the alcohol-water and alcoholdicted by the parameters of Tochigi and Kojima, and Derr and Deal, respectively, for comparing the predicted results with those of our work.Also, solid-liquid equilibria were well predicted by the extended use of the Analytical Solutions of Groups model utilizing the same parameters for predicting isobaric vapor-liquid equilibria.
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