Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

The electrical conductivities of binary systems of caprolactam tetrabutylammonium bromide ionic liquid + solvent (solvent = water, ethanol, 2-propanol, 1-butanol) systems were measured at ionic liquid mole fractions from (3.60*10-4 to 6.82*10-2) and temperatures from (290.55 to 342.25) K. The conductivities of the mixtures increase with increasing temperature, increasing concentration of ionic liquid, and decreasing caprolactam/tetrabutylammonium bromide mole ratio in the ionic liquid. The conductivity values of the binary systems (ionic liquid + solvent) decrease with the solvent in the following order: water greater than ethanol greater than 2-propanol greater than 1-butanol.