ABSTRACT

(Liquid + liquid) equilibrium data are presented for four ternary systems of an alkane, or aromatic compound and ethyl(2- hydroxyethyl)dimethylammonium bis{(trifluomethyl)sulfonyl}imide (C2NTf2) at 298.15 K: [hexane + benzene +C2NTf2], [hexane + pxylene +C2NTf2], and [hexane, or octane +m-xylene +C2NTf2]. The separation of aromatic hydrocarbons (benzene, or p-xylene, or m-xylene) from aliphatic hydrocarbons (hexane, or octane) is investigated by extraction with the ammonium ionic liquid. Selectivities and distribution ratios are discussed for these mixtures at constant temperature. The data were analysed and compared to those previously reported for other ionic liquids and especially for the system {hexane + benzene + [EMIM][NTf2]}. The nonrandom two liquid NRTL model was successfully used to correlate the experimental tie-lines and to calculate the phase compositions of the ternary systems. The data presented indicate the suitability of C2NTf2 as a good solvent for the separation of aromatic and aliphatic hydrocarbons using solvent extraction.

Compounds

#	Formula	Name
1	C8H16F6N2O5S2	ethyl(2-hydroxyethyl)dimethylammonium bis{(trifluomethyl)sulfonyl}imide
2	C6H6	benzene
3	C8H10	1,4-dimethylbenzene
4	C6H14	hexane
5	C8H18	octane
6	C8H10	1,3-dimethylbenzene

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	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	4	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	5	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	6	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
POMD	2 4 1	Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 4 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 2	Mole fraction - 4; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Proton NMR Proton NMR Proton NMR	9
POMD	3 4 1	Mole fraction - 4 ; Liquid mixture 2 Mole fraction - 4 ; Liquid mixture 1 Mole fraction - 3 ; Liquid mixture 1	Mole fraction - 3; Liquid mixture 2	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 2 Liquid mixture 1	Proton NMR Proton NMR Proton NMR	8
POMD	6 4 1	Mole fraction - 4 ; Liquid mixture 1 Mole fraction - 4 ; Liquid mixture 2 Mole fraction - 6 ; Liquid mixture 2	Mole fraction - 6; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Proton NMR Proton NMR Proton NMR	10
POMD	6 5 1	Mole fraction - 5 ; Liquid mixture 1 Mole fraction - 5 ; Liquid mixture 2 Mole fraction - 6 ; Liquid mixture 2	Mole fraction - 6; Liquid mixture 1	Temperature, K; Liquid mixture 1 Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Proton NMR Proton NMR Proton NMR	11

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Separation of aromatic hydrocarbons from alkanes using ammonium ionic liquid C2NTf2 at T = 298.15K

Domanska, U.[Urszula], Pobudkowska, A.[Aneta], Krolikowski, M.[Marek]

ABSTRACT