Solid-liquid equilibria for a pyrrolidinium-based common-cation ternary ionic liquid system, and for a pyridinium-based ternary reciprocal ionic liquid system: an experimental study and a thermodynamic model.

The present paper describes an experimental study and a thermodynamic model for the phase diagrams of the common-cation ternary system [CMPyrr]Cl-[CMPyrr]Br-[CMPyrr]BF (where [CMPyrr] refers to 1-butyl-1-methyl-pyrrolidinium) and of the ternary reciprocal system [CPy], [CPy]‖Cl, Br (where [CPy] refers to 1-alkyl-pyridinium). Phase equilibria were measured by Differential Scanning Calorimetry (DSC) for two isoplethal sections in the common-cation pyrrolidinium-based ternary system. Phase diagram measurements were recently performed for the four common-ion binary subsystems and the two diagonal sections in the pyridinium-based ternary reciprocal system.

Mixtures of ionic liquids as more efficient media for cellulose dissolution.

The ability to dissolve cellulose, by using mixtures of ionic liquids, has been studied and compared with results obtained for the corresponding single ionic liquids. The ionic liquid mixtures tested were a 3:7mol/mol mixture of 1-ethyl-3-methylimidazolium chloride ([Cmim]Cl) and 1-ethyl-3-methylimidazolium acetate ([Cmim][OAc]), and the eutectic mixture (i.e.