Vapor-liquid and liquid-liquid equilibrium for aqueous solutions containing of Choline-based Deep Eutectic Solvent and PPG400 at 298.15 K

Deep eutectic solvents (DES) have emerged in the past few years as a new class of solvents withpromising applications in several fields [1]. For designing of industrial processes, it is essential to obtainvapor pressure data for these solvents especially in water media. From this view point, in this work wefocused our attention on the study of vapor-liquid equilibria (VLE) of ternary {Choline Chloride/sucrose+ PPG400 + water} system at 298.15 K [2,3]. From this study water activity has been obtained using theimproved isopiestic method. This investigation shows that PPG is able to form an aqueous biphasicsystem with DES above a certain concentration. This is indeed what we observed experimentally bystudying liquid-liquid equilibrium [4].

Keywords:

Deep Eutectic Solvents , Sucrose , Water Activity , Vapor-Liquid Equilibria , Liquid-Lliquid Equilibria