6533b7defe1ef96bd1275b1d

RESEARCH PRODUCT

Study of liquid–liquid equilibria at different temperatures of water + ethanol + 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ternary system

Javier De La TorreEstela LladosaAmparo CháferSonia Loras

subject

UNIQUACAqueous solutionEthanolTernary numeral system010405 organic chemistryGeneral Chemical EngineeringInorganic chemistryGeneral Physics and Astronomy02 engineering and technology01 natural sciences0104 chemical sciencesSolventchemistry.chemical_compound020401 chemical engineeringchemistryIonic liquidNon-random two-liquid modelPhysical chemistry0204 chemical engineeringPhysical and Theoretical ChemistryImide

description

Abstract The experimental liquid–liquid equilibria (LLE) data of the water + ethanol + 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ([bmp][Tf2N]) system has been measured at different temperatures in this work. The LLE of the system has been measured at between 283 and 333 K. The UNIQUAC and NRTL models were used to correlate the LLE data and good results were obtained in both cases, however UNIQUAC gave a more accurate correlation. In order to apply the UNIQUAC model the volume and surface parameters for [bmp][Tf2N] (r, q) were determined. Finally, in order to obtain ethanol from the aqueous mixture, the solvent capability of the ionic liquid was checked and compared with others from the literature.

https://doi.org/10.1016/j.fluid.2016.02.003