Electrical conductivities for four ternary electrolyte aqueous solutions with one or two ionic liquid components at ambient temperatures and pressure

This work provides a method to explore the transport property of the electrolyte aqueous solutions with one or two ionic liquids, especially focus on their electrical conductivity. The conductivities were measured for the ternary systems NaCl–[C6mim][Cl] (1-hexyl-3-methylimidazolium chloride)–H2O, [C6mim][BF4]–[C6mim][Cl]–H2O, NaNO3–[C6mim][BF4](1-hexyl-3-methylimidazolium tetrafluoroborate)–H2O, and [C4mim][BF4] (1-butyl-3-methylimidazolium tetrafluoroborate)–[C6mim][BF4]–H2O, and their binary subsystems NaNO3–H2O, NaCl–H2O, [C6mim][BF4]–H2O, [C6mim][Cl]–H2O, and [C4mim][BF4]–H2O, respectively. The conductivities of the ternary systems were also determined using generalized Young's rule and semi-ideal solution theory in terms of the data of their binary solutions. The comparison showed that the two simple equations provide good predictions for conductivity of mixed electrolyte solutions and the mixed ionic liquid solutions based on the conductivity of their binary subsystems.

Graphical AbstractAs illustrated in the figures, it could be seen that the comparisons of the experimental data and the predications are almost in agreement with the measured values. Therefore, the results also obviously indicated that the generalized Young's rule [Eq. (1)] and the semi-ideal solution theory [Eq. (2)] are suitable to predict the conductivities of the ternary electrolyte solutions from the data of their binary subsystems.Figure optionsDownload full-size imageDownload as PowerPoint slide