Effect of dissolved CO2 on the conductivity of the ionic liquid [bmim][PF6]

Abstract

This work conducts the first study on the effect of compressed CO2 on the electric conductivity of ionic liquids (ILs), and the CO2/1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]) system is investigated at 40.0 °C and 50.0 °C, and at pressures up to 130 bar. It is found that the conductivity increases with increasing pressure of CO2 in the pressure range studied, although CO2 is a non-polar compound.