Thermodynamic validation of double bond comprised ionic liquids for CO2 capture

A new kind of ionic liquids has been synthesized which comprised double bonds in the structure of anions (DB-ILs). Their physical properties, including densities, viscosities, activation energies and diffusion coefficients were determined. Temperature-dependent Krichevsky-Kasarnovsky (K-K) was used to deal with the data of solubility of CO2 in DB-ILs, thermo-properties including solve enthalpy (Delta H-sol), entropy (Delta S-sol) and Gibbs free energy (Delta G(sol)) were obtained. The research shows that DB-ILs perform well at the capturing CO2 and can be regenerated four times.