Thermodynamics of organic mixtures containing amines. VIII. Systems with quinoline

Abstract

(Solid + liquid) equilibrium temperatures for mixtures containing quinoline and 1-dodecanol, 1-hexadecanol, or 1-octadecanol have been measured using a dynamic method. (Quinoline + benzene, +alkane, or +1-alkanol) systems were investigated using DISQUAC. The corresponding interaction parameters are reported. The model yields a good representation of molar excess Gibbs free energies, G E, molar excess enthalpies, H E, and of the (solid + liquid) equilibria, SLE. Interactional and structural effects were analysed comparing H E and the molar excess internal energy at constant volume, U V E . It was encountered that structural effects are very important in systems involving alkanes or 1-alkanols. Interactions between amine molecules are stronger in mixtures with quinoline than in those containing pyridine, which was ascribed to the higher polarizability of quinoline.