Experimental study of the separation of propane/propylene mixtures by supported ionic liquid membranes containing Ag+-RTILs as carrier

► C3H6/C3H8 separation using supported ionic liquid membranes containing silver ions. ► Analysis of the influence of the different operating variables at room temperature. ► Experimental permeabilities, solubility and diffusivities obtained for C3H6 and C3H8. ► Study of the liquid membrane stability in medium-term gas permeation experiments.