Thermodynamic parameters of SO2 dissolution in polar organic solvents at 295–323 K

The solubility of sulfur dioxide in N,N-dimethylformamide, dimethyl sulfoxide, N,N-dimethylacetamide, sulfolane, tributyl phosphate, and diethanolamine was measured in temperature range 295.15–323.15 K. Dissolution enthalpy and entropy were calculated from the solubility data. The interactions between solute and solvent are discussed. The obtained data are helpful for the development of sulfur dioxide removal technologies.