Blending of a CO₂ Absorber (Morpholine) with Some Organic Solvents (Benzyl Alcohol, Benzylamine, and Aniline): Transport, Acoustic, and Volumetric Approach

Abstract

Experimental values of density (ρ), speed of sound (u), and viscosity (η) of binary liquid mixtures comprising morpholine with benzylamine, benzyl alcohol, and aniline in the temperature range from 293.15 to 323.15 K with an interval of 5 K at 0.1 MPa pressure have been reported in the present communication. Making use of this experimental data, thermodynamic parameters such as excess molar volume (V m E ), isentropic compressibility (κ s ), deviation in isentropic compressibility (Δκ s ), deviation in viscosity (Δη), and excess Gibbs free energy of activation of viscous flow (ΔG E ) have been calculated. Investigations regarding the influence of intermolecular force, molecular stacking, and other factors present in these liquid mixtures on the excess and deviation properties have been carried out in terms of the sign and magnitude of these parameters. Strong intermolecular interactions have been observed for all the investigated mixtures. Correlation of the excess and deviation properties of binary liquid mixtures with composition has been done with the help of a Redlich−Kister-type polynomial.