ABSTRACT

Mixing behavior of ionic liquids (ILs), 1-pentyl-3-methylimidazolium bromide [C5mim][Br], 1- pentyl-3-methylimidazolium tetrafluoroborate [C5mim][BF4] and 1-butyl-2,3-dimethylimidazolium tetrafluoroborate [C4mmim][BF4] with ethylene glycol has been investigated using density, speed of sound, and Fourier transform infrared spectroscopy (FTIR) measurements over the whole composition range at T = (288.15 318.15) K. The density values were used to calculate excess molar volumes, whereas speed of sound results have been used to calculate deviation in isentropic compressibility. Excess properties have fitted to the Redlich-Kister polynomial equation to obtain the binary coefficients and the standard deviations. The excess properties and spectroscopic data have been analyzed in terms of effect of temperature, anion and cation of IL. The results indicates about the significance of C(2) position of the imidazolium ring in combination with the nature of anion in deciding the bulk and molecular level interactions.

Compounds

#	Formula	Name
1	C2H6O2	1,2-ethanediol
2	C9H17BrN2	1-pentyl-3-methylimidazolium bromide
3	C9H17BF4N2	1-methyl-3-pentyl-imidazolium tetrafluoroborate
4	C9H17BF4N2	1-butyl-2,3-dimethylimidazolium tetrafluoroborate

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	Vibrating tube method	7
POMD	1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	7
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	7
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	7
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	7
POMD	4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	7
POMD	1 2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	70
POMD	1 2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	70
POMD	1 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	70
POMD	1 3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	70
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	70
POMD	1 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Mole fraction - 4; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	70

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Effect of structural alteration of ionic liquid on their bulk and molecular level interactions with ethylene glycol

Pal, A.[Amalendu], Kumar, B.[Bhupinder], Kang, T. S.[Tejwant Singh]

ABSTRACT