ABSTRACT

The evaluation of using 1-butyl-3-methylimidazolium hexaflurophosphate ionic liquid, [bmim][PF6], as a solvent for the extraction of propylbenzene from aliphatic compounds was studied. The (liquid + liquid) equilibrium (LLE) for two ternary systems comprising {dodecane or tetradecane + propylbenzene + [bmim][PF6]} were analysed at atmospheric pressure and two temperatures, (313 and 333) K. The consistency of the experimental tie line data was ascertained by applying the Othmer-Tobias correlation. The effect of temperature, n-alkane chain length and solvent to feed ratio upon solubility, distribution ratio, selectivity, and per cent removal of the aromatic were investigated. The experimental LLE data were correlated using the UNIQAC and NRTL models for the activity coefficient with estimation of new interaction parameters, using the simplex minimization method and a composition based objective function. The calculated results from both methods are considered satisfactory.

Compounds

#	Formula	Name
1	C8H15F6N2P	1-butyl-3-methylimidazolium hexafluorophosphate
2	C9H12	propylbenzene
3	C12H26	dodecane
4	C14H30	tetradecane

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	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid		Liquid	Standard Abbe refractometry	1
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	2 3 1	Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 3 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 2	Temperature, K; Liquid mixture 1 Mole fraction - 3; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	22
POMD	2 4 1	Mole fraction - 2 ; Liquid mixture 1 Mole fraction - 4 ; Liquid mixture 2 Mole fraction - 2 ; Liquid mixture 2	Temperature, K; Liquid mixture 1 Mole fraction - 4; Liquid mixture 1	Pressure, kPa; Liquid mixture 1	Liquid mixture 1 Liquid mixture 2	Chromatography Chromatography Chromatography	22

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Evaluation of [bmim][PF6] as an ionic solvent for the extraction of propylbenzene from aliphatic compounds

Fandary, M. S.[Mohamed S.], Alkhaldi, K. H. A. E.[Khalid H. A. E.], Al-Jimaz, A. S.[Adel S.], Al-Rashed, M. H.[Mohsen H.], AlTuwaim, M. S.[Mohammad S.]

ABSTRACT