ABSTRACT

Consistent vapor-liquid equilibrium (VLE) data have been measured for the systems 2-butanol + tert-amyl methyl ether (TAME), 2-butanol + heptane, and heptane + tert-amyl methyl ether at (50, 75, and 94) kPa. Equilibrium determinations were performed in a VLE still with circulation of both phases. According to experimental results, binary mixtures composed by 2-butanol exhibit positive deviations from ideal behavior, and azeotropy is present over the whole range of experimental determinations. The n-heptane + tert-amyl methyl ether binary system, in turn, exhibits slight positive deviation from ideal behavior, and no azeotrope is present. The VLE data of the quoted binary mixtures were well-correlated using the Redlich-Kister, Wohl, nonrandom two-liquid (NRTL), Wilson, and universal quasichemical (UNIQUAC) equations.

Compounds

#	Formula	Name
1	C4H10O	butan-2-ol
2	C7H16	heptane
3	C6H14O	2-methoxy-2-methylbutane

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	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; 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	1
POMD	1	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	EBULLIO:UFactor:2	21
POMD	1	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	2	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; 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	1
POMD	2	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	EBULLIO:UFactor:2	22
POMD	2	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	3	Boiling temperature at pressure P, K ; Liquid	Pressure, kPa; 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	1
POMD	3	Vapor or sublimation pressure, kPa ; Liquid	Temperature, K; Liquid	Liquid Gas	EBULLIO:UFactor:2	21
POMD	3	Refractive index (Na D-line) ; Liquid	Temperature, K; Liquid Pressure, kPa; Liquid	Liquid	Standard Abbe refractometry	1
POMD	1 2	Azeotropic temperature, K ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By X=Y	3
POMD	1 2	Azeotropic composition: mole fraction - 1 ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By X=Y	3
POMD	1 2	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid Pressure, kPa; Liquid	Liquid Gas	EBULLIO:UFactor:2	63
POMD	1 2	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Pressure, kPa; Gas	Gas Liquid	Chromatography	63
POMD	1 3	Azeotropic temperature, K ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By X=Y	3
POMD	1 3	Azeotropic composition: mole fraction - 1 ; Liquid	Pressure, kPa; Liquid	Liquid Gas	By X=Y	3
POMD	1 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 1; Liquid Pressure, kPa; Liquid	Liquid Gas	EBULLIO:UFactor:2	63
POMD	1 3	Mole fraction - 1 ; Gas	Mole fraction - 1; Liquid Pressure, kPa; Liquid	Gas Liquid	Chromatography	63
POMD	2 3	Boiling temperature at pressure P, K ; Liquid	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Liquid Gas	EBULLIO:UFactor:2	60
POMD	2 3	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid Pressure, kPa; Liquid	Gas Liquid	Chromatography	60

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

Vapor-Liquid Equilibrium in the Binary Systems 2-Butanol + tert-Amyl Methyl Ether, 2-Butanol + Heptane, and Heptane + tert-Amyl Methyl Ether

Mejia, A.[Andres], Segura, H.[Hugo], Cartes, M.[Marcela]

ABSTRACT