Effect of Temperature on the Physico-chemical Properties of Three Ionic Liquids Containing Choline Chloride

The eutectic-based ionic liquids containing choline chloride are known as a novel generation of ionic liquids suitable for use as media for metal electrodeposition. The density and dynamic viscosity of eutectic mixtures of choline chloride and urea, malonic acid or ethylene glycol were studied as a function of temperature at atmospheric pressure. From this variation with temperature the thermal expansion coefficients, the molar Gibbs energy of activation for viscous flow, the molar enthalpy of activation and the molar entropy of activation for viscous flow have been calculated.