ABSTRACT

Isobaric vapor liquid equilibrium (VLE) data is determined for the binary mixtures of N-methyl-2-pyrrolidone + aminoethanol, N-methyl-2-pyrrolidone + chloroethanol, and N-methyl-2-pyrrolidone + phenylethanol at 95.3 kPa over the entire composition range using a Swietoslawski type ebulliometer. All three systems investigated show negative deviations from Raoult's law, and none of the binary systems formed azeotropic mixtures. The experimental VLE data of the three binary mixtures are correlated using the Wilson model. The computed vapor phase mole fractions, activity coefficients, and Gibbs energy along with optimum Wilson parameters are presented. The studies indicate that all three binary systems are nonideal liquid mixtures deviating from Raoult's law exhibiting negative values of excess Gibbs energies due to strong intermolecular hydrogen bonding between unlike molecules.

Compounds

#	Formula	Name
1	C5H9NO	N-methylpyrrolidone
2	C2H7NO	2-aminoethan-1-ol
3	C2H5ClO	1-chloro-2-hydroxyethane
4	C8H10O	2-phenylethanol

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	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	1
POMD	1	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	2
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	1
POMD	2	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	2
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	1
POMD	3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	2
POMD	4	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid		Liquid Gas	Ebulliometric method (Recirculating still)	1
POMD	4	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid	Pressure, kPa; Liquid	Liquid	Vibrating tube method	2
POMD	2 1	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	11
POMD	3 1	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	11
POMD	4 1	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	11

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

Activity Coefficients and Excess Gibbs Energies for Binary Mixtures of N-Methyl-2-pyrrolidone with Some Substituted Ethanols

Reddy, K. R.[K Rayapa], Rao, G. S.[G Srinivasa], Sairam, P. V. S., Anila, P., Rambabu, C., Kumar, D. B. K. B. K.[D Bala Karuna]

ABSTRACT