(179b) Measurement and Modeling of Vinyl Fluoride Solubility in Aqueous Lithium Bis(trifluoromethylsulfonyl)Imide Solutions

This presentation will highlight experimental (P-x) phase equilibrium results for the solubility of gaseous vinyl fluoride (VF) in lithium bis(trifluoromethylsulfonyl)imide (Li⁺Tf₂N^-) + water (H₂O) solutions at pressures up to 40 bar. Vinyl fluoride solubility will be explored as a function of pressure and temperature at constant Li⁺Tf₂N^- loadings (20.15, 40.0, and 80.0 wt.%) and as a function of pressure and salt composition at constant temperatures (10^oC, 30^oC, and 100^oC). The experimental results will demonstrate that VF is highly soluble in aqueous Li⁺Tf₂N^- salt solutions and that solubility is directly proportional to salt loading. A temperature dependent Peng-Robinson equation of state with a van der Waals 1-parameter mixing rule will be utilized to model the experimental results. In addition this presentation will highlight a few examples where Li⁺Tf₂N^- + H₂O solutions could be utilized as a new solvent for fluoromonomer polymerizations and as a new working fluid for absorption-cooling applications.