ABSTRACT

The isobaric vapor liquid equilibrium (VLE) data of {N-methylethanolamine + N-methyldiethanolamine (MDEA), N-methylethanolamine + ethylene glycol, ethylene glycol + MDEA} at P = (40.0, 30.0, and 20.0) kPa were investigated in this work. All of the VLE data of the three binary systems were verified to be thermodynamically consistent by both Herington area test and Van Ness point test. At the same time, the universal quasichemical (UNIQUAC), nonrandom two-liquid (NRTL), Wilson, and Margules activity coefficient equations were chosen to correlate the experimental results, deriving the coefficient parameters and estimating the standard error values. The correlation values showed that estimated data reached a good agreement with the experimental data in this study.

Compounds

#	Formula	Name
1	C5H13NO2	N-methyldiethanolamine
2	C2H6O2	1,2-ethanediol
3	C3H9NO	2-(methylamino)ethanol

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	Phase	Method	#Points
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	3	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	42
POMD	1 3	Mole fraction - 3 ; Gas	Mole fraction - 3; Liquid Pressure, kPa; Liquid	Gas Liquid	Chromatography	42
POMD	2 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	42
POMD	2 3	Mole fraction - 3 ; Gas	Mole fraction - 3; Liquid Pressure, kPa; Liquid	Gas Liquid	Chromatography	42
POMD	1 2	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	39
POMD	1 2	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Gas Liquid	Chromatography	39

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

Vapor Liquid Equilibria for Three Binary Systems of N-Methylethanolamine, N-Methyldiethanolamine, and Ethylene Glycol at P = (40.0, 30.0, and 20.0) kPa

Yang, C.[Changsheng], Feng, Y.[Yang], Cheng, B.[Bing], Zhang, P.[Ping], Qin, Z.[Zhenli], Zeng, H.[Hao], Sun, F.[Feizhong]

ABSTRACT