ABSTRACT

The solubility of CO2 in isooctane at 270.8 K, 275.0 K, and 282.5 K and at pressures from (1.46 to 3.64) MPa and the solubility of N2 in isooctane at 269.9 K, 274.5 K, and 282.3 K and at pressures from (2.70 to 9.45) MPa were measured. The solubility of CO2 in isooctane is one order of magnitude greater than that in water at the same conditions. Temperature has no significant effect on the solubility of N2 in isooctane. The equilibrium compositions of CO2 and N2 binary mixtures in isooctane at 273.8 K and at a CO2 mole fraction range of (0.079 to 0.675) in the gas phase were also determined. The selectivity of CO2 over N2 in isooctane ranges from (7.2 to 14.6) at 273.8 K.

Compounds

#	Formula	Name
1	C8H18	2,2,4-trimethylpentane
2	CO2	carbon dioxide
3	N2	nitrogen

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	2 1	Mole fraction - 2 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid Gas	Chromatography	15
POMD	1 3	Mole fraction - 1 ; Liquid	Pressure, kPa; Liquid Temperature, K; Liquid		Liquid Gas	Chromatography	15
POMD	2 1 3	Vapor or sublimation pressure, kPa ; Liquid	Mole fraction - 2; Liquid Mole fraction - 3; Liquid	Temperature, K; Liquid	Liquid Gas	Closed cell (Static) method	5
POMD	2 1 3	Mole fraction - 2 ; Gas	Mole fraction - 2; Liquid Mole fraction - 3; Liquid	Temperature, K; Gas	Gas Liquid	gas volume and GC measurements	5
POMD	2 1 3	Mole fraction - 3 ; Gas	Mole fraction - 2; Liquid Mole fraction - 3; Liquid	Temperature, K; Gas	Gas Liquid	gas volume and GC measurements	5

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

Solubility of CO2, N2, and CO2 + N2 Gas Mixtures in Isooctane

Zhang, J. S., Lee, J. W.[Jae W.]

ABSTRACT