Liquid-Liquid Equilibria of Three Ternary Systems: {Glycerol plus Benzene plus Methanol}, {Glycerol plus Benzene plus Ethanol}, and {Glycerol plus Benzene+1-Propanol}

摘要

Liquid-liquid equilibria of three ternary systems, {glycerol + benzene + methanol}, {glycerol + benzene + ethanol}, and {glycerol + benzene + 1-propanol}, were measured at temperatures of (288.15, 298.15, and 308.15) K. The quality of the results was assured by the OthmerTobias and Hand equations with the linear correlation factor (R-2 > 0.98). The results were satisfactorily correlated with the UNIQUAC equation with total average deviations of 0.55 %, 0.69 %, and 0.42 %, respectively. Glycerol was demonstrated as a suitable solvent to separate the mixture of benzene and 1-propanol into each pure component, by combining two operations of conventional distillation and liquid extraction.