Abstract
In this paper, the phase behavior of the systems composed of [Cnmim]Cl/Br (n = 2, 4, 6, 8), Rb2SO4/Cs2SO4 and H2O was investigated at 298.2 K and 308.2 K. Some systems were solid – liquid equilibrium and some were liquid – liquid equilibrium because of the effect of the inorganic salts and the cation and anion of the ionic liquids. For solid – liquid equilibrium systems, the solubility, density and refractive index of the saturated solution were determined. For liquid – liquid equilibrium systems, the binodal curves were measured. The experimental solubility, density and refractive index were fitted using an empirical equation. The binodal curves data of liquid – liquid equilibrium systems were correlated using Merchuk equation. Moreover, the effect of inorganic salts, ionic liquids, and temperature on the phase behavior of the studied systems was discussed in detail.
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