Vaporization Thermodynamics of Pyrrolidinium, Pyridinium, and Imidazolium-Based Ionic Liquids Bearing the Bis(fluorosulfonyl)imide [FSI] and the Bis(trifluoromethylsulfonyl)imide [NTf2] Anions

Abstract New experimental vapor pressures in the range 407 K to 460 and vaporization enthalpy of ionic liquids (IL) N -alkyl- -methyl-pyrrolidinium bis(fluorosulfonyl)imide have been measured using quartz crystal microbalance. The absolute enthalpies were compared with analogous pyrrolidinium-based ILs bis(trifluoromethanesulfonyl)imide anion. evaluated difference anions allowed for estimation corresponding property a wide set results are relevant chemical engineering calculations processes involving as reaction separation media.