ABSTRACT

Water activity and vapor pressure for aqueous {ionic liquid, 1-butyl-3-methyl imidazolium chloride + sucrose or D-fructose } solutions have been determined using the improved isopiestic method at T = 298.15 K. The reliability of local composition models of NRTL, NRF-NRTL, modified NRTL, Wilson, and UNIQUAC in the fitting the water activity values for the studied systems has been examined. For saccharides in aqueous and aqueous ionic liquid solutions and for ionic liquids in aqueous solutions, the unsymmetrical molal activity coefficients were computed. The interactions present in these systems were interpreted by the comparison of the molal activity coefficients of these saccharides in aqueous and aqueous ionic liquid solutions. Furthermore, salt effect of ionic liquid, 1-butyl-3-methyl imidazolium chloride has been compared with two previously studied ionic liquids 1-butyl-3-methyl imidazolium bromide and 1-hexyl-3-methyl imidazolium chloride. In this study, the effects of chain length and anion type of ionic liquids on interactions present in these systems were also investigated.

Compounds

#	Formula	Name
1	C8H15ClN2	1-butyl-3-methylimidazolium chloride
2	C6H12O6	D-fructose
3	C12H22O11	D-sucrose
4	H2O	water

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 4	(Relative) activity - 4 ; Liquid	Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	ISOPIE	12
POMD	2 1 4	(Relative) activity - 4 ; Liquid	Molality, mol/kg - 1; Liquid Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	ISOPIE	32
POMD	3 1 4	(Relative) activity - 4 ; Liquid	Molality, mol/kg - 1; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	ISOPIE	28
POMD	2 4	(Relative) activity - 4 ; Liquid	Molality, mol/kg - 2; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	ISOPIE	8
POMD	3 4	(Relative) activity - 4 ; Liquid	Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	ISOPIE	7

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

Salting-out Effect of Ionic Liquid, 1-Butyl-3-methyl Imidazolium Chloride on Aqueous d-Fructose or Sucrose Solutions at T = 298.15 K: Vapor-Liquid Equilibrium Study

Zafarani-Moattar, Mohammed Taghi, Shekaari, Hemayat, Agha, Elnaz Mazaher Haji

ABSTRACT