ABSTRACT

A new experimental apparatus for performing simultaneous determination of high-pressure vapor-liquid equilibria (VLE) and saturated densities was developed in this work. The experimental methodology was verified by measuring these properties for the carbon dioxide + 1-propanol and carbon dioxide + 2-propanol systems from 313 to 363 K. The apparatus is based on the static-analytic method for VLE determinations and was slightly modified by coupling a vibrating U-tube densitometer to obtain saturated densities for both vapor and liquid phases. VLE measurements agreed with previous literature data and were correlated with the Peng Robinson equation of state coupled to the Wong Sandler mixing rules. Saturation densities at temperatures above 313 K have not been published up to now.

Compounds

#	Formula	Name
1	C3H8O	propan-1-ol
2	C3H8O	propan-2-ol
3	CO2	carbon dioxide

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 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	16
POMD	1 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Liquid Gas	Vibrating tube method	16
POMD	1 3	Mass density, kg/m3 ; Gas	Temperature, K; Liquid Mole fraction - 3; Liquid	Gas Liquid	Vibrating tube method	16
POMD	1 3	Mole fraction - 3 ; Gas	Mole fraction - 3; Liquid Temperature, K; Liquid	Gas Liquid	Chromatography	16
POMD	2 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 3; Liquid Temperature, K; Liquid	Liquid Gas	Ebulliometric method (Recirculating still)	36
POMD	2 3	Mass density, kg/m3 ; Liquid	Temperature, K; Liquid Mole fraction - 3; Liquid	Liquid Gas	Vibrating tube method	36
POMD	2 3	Mass density, kg/m3 ; Gas	Temperature, K; Gas Mole fraction - 3; Gas	Gas Liquid	Vibrating tube method	36
POMD	2 3	Mole fraction - 3 ; Gas	Mole fraction - 3; Liquid Temperature, K; Liquid	Gas Liquid	Chromatography	36

Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

New analytic apparatus for experimental determination of vapor-liquid equilibria and saturation densities

Galicia-Luna, L. A.[Luis A.], Elizalde-Solis, O.[Octavio]

ABSTRACT