Comparison of Solution Behaviors of Two Structurally Related Ionic Liquids in Water and in Acetonitrile as Studied by Volumetric and Acoustic Properties

摘要: Interactions of 1-butyl-1-methylpyrrolidinium tetrafluoroborate (BMPYBF4) and 1-butyl-1-methylpiperidinium (BMPIBF4) with water acetonitrile (AN) were studied in a comparative manner through the measurements density speed sound at 288.15, 293.15, 298.15, 303.15 308.15 K. The measured densities speeds used calculation apparent molar volumes isentropic compressions two ionic liquids (ILs) AN. Infinite dilution values quantities obtained by extrapolation. Then, these properties evaluated terms IL–water IL–AN interactions. effect presence an additional cyclic –CH2– group structure BMPIBF4, compared to that BMPYBF4, on volumetric acoustic has been examined both solvent, H2O or AN, solution behaviors ILs is discussed, based transfer from Apparent isobaric expansions infinite dilutions determined. Temperature effects AN are discussed variation temperature.