ABSTRACT

Vapor-liquid equilibrium of aqueous [C6H11N2][HSO4] and LiBr systems and the ternary ([C6H11N2][HSO4] + LiBr + H2O) system are studied at T = 298.15 K. Isopiestic method applied to obtain the water activity, osmotic coefficient, activity coefficient and vapor pressure. For binary mixtures, the different models such as Pitzer, Pitzer Archer and Modified- Pitzer models are fitted to the osmotic coefficients data, and for the studied ternary system, we used the Scatchard s natural electrolyte model to correlate the osmotic coefficients values at T = 298.15 K. The effect of [C6H11N2][HSO4] on volumetric properties of aqueous LiBr solutions is considered. Limiting apparent molar expansibilities are obtained and McMillan-Meyer parameters are evaluated.

Compounds

#	Formula	Name
1	C6H12N2O4S	1-ethyl-3-methylimidazolium hydrogen sulfate
2	BrLi	lithium bromide
3	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	3 1	(Relative) activity - 3 ; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 1; Liquid	Temperature, K; Liquid	Liquid	isopiestic	15
POMD	3 1	Vapor or sublimation pressure, kPa ; Gas	Molality, mol/kg - 1; Liquid	Temperature, K; Gas	Gas Liquid	isopiestic	15
POMD	3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	50
POMD	2 3	(Relative) activity - 3 ; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 2; Liquid	Temperature, K; Liquid	Liquid	isopiestic	15
POMD	2 3	Vapor or sublimation pressure, kPa ; Gas	Molality, mol/kg - 2; Liquid	Temperature, K; Gas	Gas Liquid	isopiestic	15
POMD	2 3 1	(Relative) activity - 3 ; Liquid	Pressure, kPa; Liquid Molality, mol/kg - 1; Liquid Molality, mol/kg - 2; Liquid	Temperature, K; Liquid	Liquid	isopiestic	60
POMD	2 3 1	Vapor or sublimation pressure, kPa ; Gas	Molality, mol/kg - 1; Liquid Molality, mol/kg - 2; Liquid	Temperature, K; Gas	Gas Liquid	isopiestic	60
POMD	2 3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 1; Liquid Solvent: Mass fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	150

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Vapor-liquid equilibria and volumetric properties for new working fluid ([C6H11N2][HSO4] + LiBr + H2O) and corresponding binary systems at different temperatures and ambient pressure

Rafiee, H. R.[Hamid Reza], Frouzesh, F.[Farshid]

ABSTRACT