Isobaric phase equilibrium of morpholine + 1-decanol, volumetric properties and molar refractivity from 293.15 to 333.15 K of morpholine + 1-decanol and 1-octanol + toluene system with applications of Prigogine–Flory–Patterson theory

Abstract

Morpholine, having its applications in process industries is also used as an anticancer agent as well as a building block in the preparation of linezolid antibiotic. 1-decanol can be used as a suitable solvent for recovery of morpholine from its aqueous stream. The present study involves VLE studies and volumetric properties of the morpholine+1-decanol, at 13.32, 39.99, 66.66 and 94.90kPa. Wilson, NRTL, and UNIFAC models were used to correlate and predict the experimental VLE data. Further, thermodynamic properties such as excess molar volume (VmE), and deviation in molar refractivity (ΔR). Partial molar volume (V¯i), apparent molar volume (Vϕi)and excess partial molar volume (V¯iE)were also estimated. Moreover, all the above thermodynamic properties have also been estimated for the 1-octanol+toluene mixture at different temperatures. The applicability of Prigogine–Flory–Patterson theory and different mixing rules were tested for the excess molar volumes and refractive indices, respectively.