Measurements of different thermodynamic properties of systems containing ionic liquids and correlation of these properties using modified UNIFAC (Dortmund)

Activity coefficients at infinite dilution (γ∞), vapor–liquid equilibria (VLE) and excess enthalpies (HE) for different alkanes and alkenes with the ionic liquids 1-butyl-3-methylimidazolium trifluoromethanesulfonate [BMIM]+[OTF]−, 1-hexyl-3-methylimidazolium trifluoromethanesulfonate [HMIM]+[OTF]− and 1-octyl-3-methylimidazolium trifluoromethanesulfonate [OMIM]+[OTF]− have been measured. The new data were used to revise and extend the group interaction parameter matrix of modified UNIFAC (Dortmund).