ABSTRACT

The apparent molar volumes, Vf and apparent molar isentropic compressibilities, Ks,f of three benzyldimethylammonium based protic ionic liquids, namely, benzyldimethylammonium acetate (BDMAA), benzyldimethylammonium propionate (BDMAP), and benzyldimethylammonium hexanoate (BDMAH) in water and ethanol have been determined at T = (293.15, 298.15, 303.15, 308.15, 313.15 and 318.15) K and at ambient pressure from density, r and speed of sound, u measurements. The Redlich Mayer type of equation has been used to calculate the apparent molar volume, Vf 1and apparent molar isentropic compressibility, Kf 1 at infinite dilution, and the corresponding empirical parameters (Sv, Bv, Sk and Bk). The negative magnitude of limiting volumetric slopes, Sv versus m1/2 for (BDMAA + ethanol) binary solutions, suggests that BDMAA ethanol interactions are strong. Further, the change in thermodynamic properties of binary solutions in relation to the alternation in the anionic structural constitution of protic ionic liquids has also been evaluated.

Compounds

#	Formula	Name
1	H2O	water
2	C2H6O	ethanol
3	C11H17NO2	N,N-dimethylbenzylammonium acetate
4	C12H19NO2	benzyldimethylammonium propionate
5	C15H25NO2	benzyldimethylammonium hexanoate

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	6
POMD	1	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	6
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	6
POMD	2	Speed of sound, m/s ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	6
POMD	1 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	60
POMD	1 3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	60
POMD	2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	66
POMD	2 3	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 3; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	66
POMD	1 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	48
POMD	1 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	48
POMD	2 4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	48
POMD	2 4	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 4; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	48
POMD	1 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	36
POMD	1 5	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	36
POMD	2 5	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	36
POMD	2 5	Speed of sound, m/s ; Liquid	Temperature, K; Liquid Molality, mol/kg - 5; Liquid	Pressure, kPa; Liquid	Liquid	Sing-around technique in a fixed-path interferometer	36

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Apparent molar properties of benzyldimethylammonium based protic ionic liquids in water and ethanol at different temperatures

Keshapolla, D.[Dasthaiah], Singh, V.[Vickramjeet], Gupta, A.[Akash], Gardas, R. L.[Ramesh L.]

ABSTRACT