Densities, conductivities, and viscosities of aqueous solutions of N-hexyl,methylpyrrolidinium bromide and N-butyl,methylpyrrolidinium bromide at different temperatures

The densities, conductivities, and viscosities were measured for ternary solutions of N-hexyl,methylpyrrolidinium bromide ([PP1,6]Br)- N-butyl,methylpyrrolidinium bromide ([PP1,4]Br)-H2O and its binary subsystems [PP1,6]Br-H2O and [PP1,4]Br-H2O at (298.15, 303.15, 308.15, and 313.15) K, respectively. The results were used to test the predictability of the simple equations established for the prediction of density, conductivity, and viscosity of the mixed electrolyte solutions. The results show that the examined simple equations can offer good predictions for density, conductivity, and viscosity of the mixed ionic liquid solutions in terms of the corresponding properties of its binary subsystems of equal ionic strength.

Graphical abstractThe figure shows the comparisons of the density, conductivity, and viscosity data of measured and predicted for ternary solutions of N-hexyl,methylpyrrolidinium bromide ([PP1,6]Br), N-butyl,methylpyrrolidinium bromide ([PP1,4]Br), and H2O. The prediction was based on the data of binary subsystems [PP1,6]Br–H2O and [PP1,4]Br–H2O at (298.15, 303.15, 308.15, and 313.15) K, and established by using the sample equations. The comparisons also used to test the predictability of the simple equations. The figure shows that the simple equations can predict the density, conductivity, and viscosity of mixed ionic liquid solutions well in terms of the corresponding properties of its binary subsystems of equal ionic strength.Figure optionsDownload full-size imageDownload as PowerPoint slide