ABSTRACT

In this work, the systematic study of the physicochemical and excess properties of binary mixtures of carboxylic-based ionic liquids with water is presented. The ILs studied, 1-ethyl-1-methylpyrrolidinium acetate, [EMPYR][AcO], 1-ethyl-1-methylpyrrolidinium glycolate, [EMPYR][Gly] and 1-ethyl-1- methylmorpholinium glycolate, [EMMOR][Gly] were synthesized in our laboratory, and their structures confirmed by NMR technique. In addition, basic thermophysical characterization of pure ILs was determined using the DSC technique. The density, q and dynamic viscosity, g were measured over the entire composition range as a function of temperature from (298.15 to 348.15) K at 101.3 kPa. From the experimental results, excess molar volumes, VE and dynamic viscosity deviations, Dg were calculated and described using the Redlich-Kister equation. The influence of the IL structure on the transport and thermodynamic properties is discussed.

Compounds

#	Formula	Name
1	C9H19NO2	1-ethyl-1-methylpyrrolidinium acetate
2	C9H19NO3	1-ethyl-1-methylpyrrolidinium glycolate
3	C9H19NO4	N-ethyl-N-methylmorpholinium glycolate
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	Triple point temperature, K ; Glass			Glass Liquid Air at 1 atmosphere	DSC	1
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	11
POMD	1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	11
POMD	2	Triple point temperature, K ; Glass			Glass Liquid Air at 1 atmosphere	DSC	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	11
POMD	2	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	11
POMD	3	Triple point temperature, K ; Glass			Glass Liquid Air at 1 atmosphere	DSC	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	11
POMD	3	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	7
POMD	4 1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	110
POMD	4 1	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	110
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	132
POMD	2 4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	121
POMD	3 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	121
POMD	3 4	Viscosity, Pa*s ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Falling or rolling sphere viscometry	104

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

The influence of temperature and composition on the density, viscosity and excess properties of aqueous mixtures of carboxylic-based ionic liquids

Krolikowska, M.[Marta], Zawadzki, M.[Maciej], Domanska, U.[Urszula], Ramjugernath, D.[Deresh], Naidoo, P.[Paramespri]

ABSTRACT