On the thermodynamic properties of solutions containing 2-hydroxy ethylammonium formate ionic liquid

Publication date: 15 January 2019Source: Journal of Molecular Liquids, Volume 274Author(s): M.M. Alavianmehr, O. Mehrayin, J. MoghadasiAbstractSpeeds of sound and densities for a set of binary mixtures including ionic liquid, 2-hydroxy ethyl ammonium formate (2-HEAF), with benzyl alcohol, 2-butanol and 1,2-butanediol, that are new in literature, were measured over the entire composition range and at six temperatures from 298.15 K to 323.15 K and atmospheric pressure by means of vibrating tube densitometer DSA 5000. From the experimental data, the excess molar properties consisting of excess molar volume, the excess thermal expansion coefficients, and the excess partial molar volumes, the excess partial molar volumes at infinite dilution, and deviation in isentropic compressibility, were calculated and correlated with the third-order Redlich–Kister equation. The results have been used to discuss the nature and strength of intermolecular interactions in these mixtures. Finally, it has been checked how the calculated values of densities using the Tao-Mason (TM) equation of state passes through the measured ones.
Source: Journal of Molecular Liquids - Category: Molecular Biology Source Type: research