Propiedades volumétricas de las mezclas binarias del líquido iónico [Bmim][CF3SO3] con etanol, con 1-propanol y con agua a diferentes temperaturas

Abstract

Densities for binary mixtures of ionic liquid (LI) 1-butyl-3-methylimidazolium trifluoromethanesulfonate with ethanol, 1-propanol and water in the whole concentration range, at temperatures between 283K and 308 K were determined using vibrating tube densimeter Anton Paar DMA 5000 model. The excess molar volume was determined at different concentration of the IL, finding positive and negative values. Apparent molar volumes and apparent limiting molar volumes were also determined. After applying the criterion of Hepler, the IL in ethanol and water were found to have solvophobic solvation (lacking affinity for the water solvent) while in 1-propanol was found to have solvophilic solvation (having affinity for the water solvent).