ABSTRACT

Excess enthalpy measurements on four ionic liquid (1-ethyl-3-methylimidazolium thiocyanate, 1-ethyl-3-methylimidazolium diethylphosphate, ethyl(tributyl)phosphonium diethylphosphate, and 1-hexyl-3-methylimidazolium trifluoromethanesulfonate) + water mixtures are reported. Heat capacities and densities of seven pure ionic liquids were measured. These measurements of imidazolium- and phosphonium-based ionic liquids are compared to our previous physical property measurements.

Compounds

#	Formula	Name
1	C8H11F3N2O3	1-(2-hydroxyethyl)-3-methyl-1H-imidazolium 2,2,2-trifluoroacetate
2	C6H12N2O4S	1-ethyl-3-methylimidazolium hydrogen sulfate
3	C7H14N2O4S	1-ethyl-3-methylimidazolium methylsulfate
4	C7H14N2O3S	1-ethyl-3-methylimidazolium methanesulfonate
5	C7H11N3S	1-ethyl-3-methylimidazolium thiocyanate
6	C10H21N2O4P	1-ethyl-3-methylimidazolium diethyl phosphate
7	C18H42O4P2	tributylethylphosphonium diethylphosphate
8	C11H19F3N2O3S	1-hexyl-3-methylimidazolium trifluoromethanesulfonate
9	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	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	7
POMD	2	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	7
POMD	3	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	7
POMD	4	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	7
POMD	5	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	7
POMD	6	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	6	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	7
POMD	7	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	7	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	VIBTUB:UFactor:8	7
POMD	8	Molar heat capacity at constant pressure, J/K/mol ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Small sample (50 mg) DSC	7
POMD	9 5	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Temperature, K; Liquid Mole fraction - 9; Liquid	Pressure, kPa; Liquid	Liquid	Calvet calorimetry	30
POMD	9 6	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Temperature, K; Liquid Mole fraction - 9; Liquid	Pressure, kPa; Liquid	Liquid	Calvet calorimetry	18
POMD	9 7	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Temperature, K; Liquid Mole fraction - 9; Liquid	Pressure, kPa; Liquid	Liquid	Calvet calorimetry	18
POMD	9 8	Excess molar enthalpy (molar enthalpy of mixing), kJ/mol ; Liquid	Temperature, K; Liquid Mole fraction - 9; Liquid	Pressure, kPa; Liquid	Liquid	Calvet calorimetry	18

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

Thermodynamic and Thermophysical Properties of Ionic Liquid + Water Systems

Ficke, L. E.[Lindsay E.], Novak, R.[Robert], Brennecke, J. F.[Joan F.]

ABSTRACT