ABSTRACT

Densities, isobaric thermal expansivities, and excess enthalpies were determined for the binary systems formed by ionic liquids with a common anion, 1-hexyl-3-methylimidazolium tetrafluoroborate + 1-ethyl-3-methylimidazolium tetrafluoroborate, and 1-hexyl-3-methylimidazolium tetrafluoroborate + 1-butyl-3-methylimidazolium tetrafluoroborate, and by those with a common cation, 1-butyl-3-methylimidazolium tetrafluoroborate + 1-butyl- 3-methylimidazolium methylsulfate and 1-butyl-3-methylimidazolium tetrafluoroborate + 1-butyl-3-methylimidazolium hexafluorophosphate. Volumetric properties were obtained by means of a vibrating tube densimeter, whereas Calvet microcalorimetry was used to determine the excess enthalpies. Due to the high viscosity of the samples, nonstandard experimental techniques had to be used to obtain the results. The experimental data are interpreted on the basis of the chemical structure of the ionic liquids.

Compounds

#	Formula	Name
1	C10H19BF4N2	1-hexyl-3-methylimidazolium tetrafluoroborate
2	C6H11BF4N2	1-ethyl-3-methylimidazolium tetrafluoroborate
3	C8H15BF4N2	1-butyl-3-methylimidazolium tetrafluoroborate
4	C9H18N2O4S	1-butyl-3-methylimidazolium methyl sulfate
5	C8H15F6N2P	1-butyl-3-methylimidazolium hexafluorophosphate

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	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	18
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	9
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	18
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:6	9
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	9
POMD	2 1	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	CALVET:UFactor:8	11
POMD	2 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	135
POMD	3 1	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	CALVET:UFactor:8	9
POMD	3 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	108
POMD	3 4	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	CALVET:UFactor:8	9
POMD	3 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:6	144
POMD	5 3	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Mole fraction - 5; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid	Liquid	CALVET:UFactor:8	10
POMD	5 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 5; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	126

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

Excess Magnitudes for Ionic Liquid Binary Mixtures with a Common Ion

Navia, P.[Paloma], Troncoso, J.[Jacobo], Romani, L.[Luis]

ABSTRACT