ABSTRACT

The boiling temperature at atmospheric pressure were measured for 12 binary systems within the range T = (316 to 379) K and seven ternary systems using a dual circulation (vapour + liquid) equilibrium still. The systems studied contained water, methanol, or ethanol with the following ionic liquids (ILs): monoethanolammonium acetate ([HMEA][Ac]), diethanolammonium acetate ([HDEA][Ac]), triethanolammonium acetate ([HTEA][Ac]), and diethanolammonium chloride ([HDEA]Cl). The experimental VLE results of the IL-containing binary systems were correlated by NRTL equation, and the binary NRTL parameters were used for the prediction of VLE of ternary systems with average absolute deviation of 0.73 K in boiling temperature. The results indicate that [HDEA]Cl can be used as an efficient solvent for the extractive distillation of (ethanol + water) due to its notable salting-out effect, which lower the vapour pressure of water, increase the volatility of ethanol, and eliminate the azeotropic phenomenon of the (water + ethanol) at definite IL concentration.

Compounds

#	Formula	Name
1	C2H6O	ethanol
2	CH4O	methanol
3	H2O	water
4	C4H11NO3	2-hydroxyethylammonium acetate
5	C6H15NO4	2,2'-azanediylbis(ethanol) acetate
6	C8H19NO5	triethanolammonium acetate
7	C4H12ClNO2	bis(2-hydroxyethyl)ammonium chloride

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	3 4	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	3 5	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	3 6	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	3 7	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 4	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 5	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 6	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 7	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	2 4	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	2 5	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	2 6	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	2 7	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 3 4	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 3 6	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 2 5	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 2 6	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 3 7	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 3; Liquid Mole fraction - 1; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	6
POMD	1 2 4	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	7
POMD	1 2 7	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid Mole fraction - 2; Liquid	Pressure, kPa; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	6

Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Boiling temperature measurement for water, methanol, ethanol, and their binary mixtures in the presence of a hydrochloric or acetic salt of mono-, di-, or tri-ethanolamine at 101.3 kPa

Wang, J. F.[Jun Feng], Li, X.-M.[Xue-Mei], Meng, H.[Hong], Li, C.-X.[Chun-Xi], Wang, Z.-H.[Zi-Hao]

ABSTRACT