Solid–liquid equilibrium, excess molar volume, and deviations in the molar refractivity for the binary and ternary mixtures of Alamine 304-1 with 1-octanol, 2-octanol, and 1-decanol

Abstract

The solid–liquid equilibrium (SLE) of binary systems containing Alamine 304-1 (tri-dodecylamine), which used as a selective solvent in the extraction of molybdenum (Mo), was measured at atmospheric pressure by the visual method. The experimental SLE data for mixtures of Alamine 304-1+1-octanol, Alamine 304-1+2-octanol, and Alamine 304-1+1-decanol were then correlated to the non-random two-liquid (NRTL) and universal quasi-chemical (UNIQUAC) equations. We correlated the excess molar volume (VE) and deviations in molar refractivity (ΔR) of the aforementioned binary mixtures at 298.15K using the Redlich–Kister equation. The VE and ΔR of the ternary mixtures Alamine 304-1+1-octanol+2-octanol, Alamine 304-1+1-octanol+1-decanol, Alamine 304-1+2-octanol+1-decanol, and 1-octanol+2-octanol+1-decanol were predicted by the Radojkovič equation using the correlated binary Redlich–Kister parameters.