The study of volumetric, acoustic and transport properties of ionic liquid, 1-butyl-3-methyl imidazolium chloride [Bmim][C1] in aqueous lithium bromide solutions at T=298.15-318.15 K

摘要

We studied the effect of ionic liquid, 1-butyl-3-methyl imidazolium chloride on thermodynamic and transport properties of aqueous lithium bromide solutions. In this work, densities, speed of sound and viscosity of these systems at 298.15,303.15,308.15,313.15, and 318.15 K have been measured. The apparent molar volume, isentropic compressibility, apparent isentropic compressibility and relative viscosity values have been evaluated from the experimental density, speed of sound and viscosity data. Redlich-Mayer equation has been applied for correlating the apparent molar volumes and apparent molar isentropic compressibility values in dilute region. Viscosity data in the whole concentration range were correlated to a semi-empirical equation. The viscosity B-coefficients were obtained by fitting viscosity data to Jones-Dole equation. It is well established that viscosity B-coefficient is a measure of solute-solvent interactions, and is directly dependent on the size, shape and charge of the solute molecules.