Abstract (EN):
In this paper, we report experimental densities, dynamic viscosities, and refractive indices and their
derived properties of the ternary system (1-butyl-3-methylimidazolium methylsulphate + ethanol
+ water) at T = 298.15 K and of its binary systems 1-butyl-3-methylimidazolium methylsulphate with
ethanol and with water at several temperatures T = (298.15, 313.15, 328.15) K. These physical properties
have been measured over the whole composition range and at 0.1 MPa. Excess molar volumes, viscosity
deviations, and excess free energy of activation for the binary systems at the abovementioned temperatures,
were calculated and fitted to the Redlich–Kister equation to determine the fitting parameters and
the root-mean-square deviations and for the ternary systems were calculated and fitted to Cibulka, Singh
et al., and Nagata and Sakura equations. The ternary excess properties were predicted from binary contributions
using geometrical solution models. Refractive indices were measured from T = 298.15 K over
the whole composition range for the binary and ternary systems. The results were used to calculate deviations
in the refractive index.
Language:
English
Type (Professor's evaluation):
Scientific