(382af) Volumetric Properties of Sucrose in Aqueous 1-Butyl-3-Methylimidazolium Hydrogen Sulfate Ionic Liquid Solution at Different Temperatures

Saccharides and their derivatives represent the most abundant class of biochemistry and are receptors of biologically active compounds (enzymes, drugs, etc.) having many biological function such as structural, protective, metabolic and recognition [1]. In this present study, we report new experimental density data of aqueous solutions of 1-butyl-3-methylimidazolium hydrogen sulfate ionic liquid containing sucrose, at different temperatures and composition. The concentration of sucrose were from 0.015 to 1.7 mol∙kg^-1 in water and (0.025; 0.050; 0.075 and 0.1 mol∙kg^-1) in aqueous ionic liquid at temperatures of T = (283.15, 288.15, 293.15, 298.15 and 303.15) K. Density of solutions have been determined by using a vibrating-tube densimeter manufactured by Anton Paar (Model 4500). From these experimental results, corresponding apparent molar volumes, apparent molar volumes at infinite dilution and partial molar transfer volumes of sucrose from water to aqueous ionic liquid solutions have been determined. The negative values of the molar transfer volume lead to believe that possible hydrophilic-ionic interactions among the hydrophilic groups (-OH, -O-) of the sucrose and the ions of ionic liquid can be predominant in the system containing sucrose.

References

[1] P.K. Banipal, A.K. Chahal, T.S. Banipal, J. Chem. Thermodyn., 41 (2009) 452-483.