Experimental and modelling liquid–liquid equilibrium for the system 2-ethyl-1-hexanol + glycerol

Abstract

This work presents experimental data on liquid–liquid equilibrium (LLE) for the system 2-ethyl-1-hexanol + glycerin. Equilibrium data were obtained through “cloud point” method, at temperatures of 298.15 K, 313.15 K, 333.15 K, 368.15 K, 383.15 K, 403.15 K, and 433.1 K. For the experimental data, a UNIQUAC model was used to describe the phase’s equilibrium performance. Posteriorly, a phase split stability test was done to validate the parameters found in this model. The system presented “upper critical solution temperature” (UCST), and the parameters of the UNIQUAC model were satisfactorily adjusted (1.27% standard deviation). The stability phase test (phase split) proved the validation of the tested model.