Solid - liquid and liquid - liquid equilibrium of the systems composed of [C(n)mim]Cl/Br (n=2, 4, 6, 8) + Rb2SO4/Cs2SO4 + H2O

In this paper, the phase behavior of the systems composed of [C(n)mim]Cl/Br (n = 2, 4, 6, 8), Rb2SO4/Cs2SO4 and H2O was investigated at 2982 K and 3082 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. (C) 2018 Elsevier B.V. All rights reserved.