ABSTRACT

Selection of a suitable solvent is the key for the extraction process. In this work, four ionic liquids were selected as solvent for extracting butanol, the ternary liquid-liquid equilibria (LLE) data for systems of heptane + butanol + {[HMIM][BF4] (1-Hexyl-3-methylimidazolium tetrafluoroborate), [OMIM][BF4] (1-Octyl-3-methylimidazolium tetrafluoroborate), [HMIM][OTf] (1-Hexyl-3-methylimidazolium trifluoromethansulfonate), [HMIM][NTf2] (1-Hexyl-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide)} were measured at 298.15 K and atmospheric pressure. The extraction capacity of four ILs in the separation of butanol from heptane + butanol mixture was estimated by the selectivity (S) and solute distribution ratio (a), and the influence of the structure and anion of IL on the extraction efficiency was investigated. The experimental LLE data were correlated by using NRTL and UNIQUAC models.

Compounds

#	Formula	Name
1	C7H16	heptane
2	C4H10O	butan-1-ol
3	C10H19BF4N2	1-hexyl-3-methylimidazolium tetrafluoroborate
4	C12H23BF4N2	1-methyl-3-octylimidazolium tetrafluoroborate
5	C12H19F6N3O4S2	1-hexyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide
6	C11H19F3N2O3S	1-hexyl-3-methylimidazolium trifluoromethanesulfonate

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	1 2 3	Mole fraction - 1 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 1 Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	1 2 3	Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 2	Mole fraction - 2; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	8
POMD	1 2 4	Mole fraction - 1 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 1 Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	1 2 4	Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	6
POMD	1 2 5	Mole fraction - 1 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 1 Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1
POMD	1 2 5	Mole fraction - 1 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 2	Mole fraction - 2; Liquid mixture 1	Temperature, K; Liquid mixture 2 Pressure, kPa; Liquid mixture 2	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	6
POMD	1 2 6	Mole fraction - 1 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 1 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 2	Liquid mixture 2 Liquid mixture 1	Chromatography Chromatography Chromatography	9
POMD	1 2 6	Mole fraction - 1 ; Liquid mixture 1	Mole fraction - 2; Liquid mixture 1 Pressure, kPa; Liquid mixture 1 Temperature, K; Liquid mixture 1		Liquid mixture 1 Liquid mixture 2	Titration method	1

Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Liquid-Liquid Extraction of Butanol from Heptane + Butanol Mixture by Ionic Liquids

Wen, Guilin, Zhang, Xia, Geng, Xueli, Ma, Yixin, Gao, Jun, Wang, Yinglong, Zhu, Zhaoyou

ABSTRACT