In this work, the solubility of carbon dioxide, CO2, in pentaerythritol tetrapentanoate (PEC5) and in pentaerythritol tetra(2-ethylhexanoate) (PEBE8) has been performed from (283 to 333) K and pressures up to 7 MPa in a new high-pressure gas solubility apparatus. The results show that in the present analyzed range CO2 is highly soluble in these oils and that the solubility expressed as CO2 mole fraction is practically not dependent on the branching of the acid chain, whereas it increases slightly with the length of the PE acid chains in the present range of compositions. The gas solubility data were satisfactorily correlated with the Soave-Redlich-Kwong (SRK) equation of state (EOS) using the conventional quadratic mixing rule with two interaction parameters for each temperature.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
C25H44O8
pentaerythritol tetrapentanoate
3
C37H68O8
pentaerythritol tetra(2-ethylhexanoate)
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
1
2
Mole fraction - 1 ; Liquid
Temperature, K; Liquid
Pressure, kPa; Liquid
Liquid
Gas
Calculated from the degassed mass introduced in the equilibrium cell.
51
POMD
1
3
Mole fraction - 1 ; Liquid
Temperature, K; Liquid
Pressure, kPa; Liquid
Liquid
Gas
Calculated from the degassed mass introduced in the equilibrium cell.