ABSTRACT

The liquid liquid equilibria data of water (1) + 2-propanol (2) + [bmim][Tf2N] (3) and water (1) + 2- propanol (2) + [bmp][Tf2N] (3) at 283.2, 303.2 and 323.2 K and atmospheric pressure were measured with the objective of understanding the behavior of these two systems and to try to improve the extraction of 2-propanol from water from economical and environmental points of view. The thermodynamic parameters were determined using the non-random two-liquid (NRTL) and universal quasichemical (UNIQUAC) models, and excellent results were achieved in both cases (the maximum root-mean-square deviation was 0.433%). Lastly, the capability of the two ionic liquids to separate 2-propanol from the aqueous mixture was studied and compared with the capabilities of other bis(trifluoromethylsulfonyl)imide-based ionic liquids from the literature.

Compounds

#	Formula	Name
1	H2O	water
2	C3H8O	propan-2-ol
3	C10H15F6N3O4S2	1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide
4	C11H20F6N2O4S2	1-butyl-1-methylpyrrolidinium bis[(trifluoromethyl)sulfonyl]imide

Datasets

The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type	Compound-#	Property	Variable	Constraint	Phase	Method	#Points
POMD	2 1 3	Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mole fraction - 1; Liquid mixture 2	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	23
POMD	2 1 4	Mole fraction - 2 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1 Mole fraction - 1; Liquid mixture 2	Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	24
POMD	1 3	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography	3
POMD	1 4	Mole fraction - 1 ; Liquid mixture 1	Temperature, K; Liquid mixture 1	Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography	3

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Study of separation of water + 2-propanol mixture using different ionic liquids: 1-Butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide or 1-butyl-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide

Cumplido, Ma Pilar, Chafer, Amparo, de la Torre, Javier, Monton, J.B.

ABSTRACT