ABSTRACT

For the measurement of limiting activity coefficients different techniques are available. In this work the activity coefficients at infinite dilution i of alkanes and alkenes in the ionic liquids 1-butyl-3-methylimidazolium tetrafluoroborate [BMIM]+[BF4]. and 1-hexyl-3-methylimidazolium tetrafluoroborate [HMIM]+[BF4]. from 303.15K to 353.15K were measured with the help of the dilutor technique. The new data were compared with already published experimental data measured by using gas.liquid chromatography. Furthermore, the selectivities S ij = i / j at infinite dilution for the separation problems hexane.1-hexene and octane.1-octene were determined from the experimental i data in the investigated ionic liquids and compared with the values obtained for other ionic liquids and conventional selective solvents.

Compounds

#	Formula	Name
1	C6H14	hexane
2	C7H16	heptane
3	C8H18	octane
4	C9H20	nonane
5	C10H22	decane
6	C6H12	hex-1-ene
7	C7H14	1-heptene
8	C8H16	oct-1-ene
9	C10H20	1-decene
10	C8H15BF4N2	1-butyl-3-methylimidazolium tetrafluoroborate
11	C10H19BF4N2	1-hexyl-3-methylimidazolium tetrafluoroborate

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 10	Activity coefficient - 1 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 1; Liquid	Liquid	dilutor technique	4
POMD	2 10	Activity coefficient - 2 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 2; Liquid	Liquid	dilutor technique	5
POMD	3 10	Activity coefficient - 3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 3; Liquid	Liquid	dilutor technique	5
POMD	4 10	Activity coefficient - 4 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 4; Liquid	Liquid	dilutor technique	3
POMD	5 10	Activity coefficient - 5 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 5; Liquid	Liquid	dilutor technique	3
POMD	6 10	Activity coefficient - 6 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 6; Liquid	Liquid	dilutor technique	4
POMD	7 10	Activity coefficient - 7 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 7; Liquid	Liquid	dilutor technique	4
POMD	8 10	Activity coefficient - 8 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 8; Liquid	Liquid	dilutor technique	4
POMD	9 10	Activity coefficient - 9 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 9; Liquid	Liquid	dilutor technique	4
POMD	2 11	Activity coefficient - 2 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 2; Liquid	Liquid	dilutor technique	5
POMD	3 11	Activity coefficient - 3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 3; Liquid	Liquid	dilutor technique	5
POMD	4 11	Activity coefficient - 4 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 4; Liquid	Liquid	dilutor technique	4
POMD	5 11	Activity coefficient - 5 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 5; Liquid	Liquid	dilutor technique	4
POMD	6 11	Activity coefficient - 6 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 6; Liquid	Liquid	dilutor technique	4
POMD	7 11	Activity coefficient - 7 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 7; Liquid	Liquid	dilutor technique	4
POMD	8 11	Activity coefficient - 8 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 8; Liquid	Liquid	dilutor technique	4
POMD	9 11	Activity coefficient - 9 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid Mole fraction - 9; Liquid	Liquid	dilutor technique	3

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Activity coefficients at infinite dilution of alkanes and alkenes in 1-alkyl-3-methylimidazolium tetrafluoroborate

Bahlmann, M.[Matthias], Nebig, S.[Silke], Gmehling, J.[Jurgen]

ABSTRACT