Density of biofuel mixtures (Dibutyl ether + Heptane) at temperatures from (298.15-393.15) K and at pressures up to 140 MPa: Experimental data and PC-SAFT modeling
Density has been reported to binary mixtures (552 points) of dibutyl ether (DBE) + heptane in the composition range (4 compositions; 0.325 less than= dibutyl ether mole fraction x less than= 0.85), between 298.15,393.15 K, and for 23 pressures ranging from 0.1 MPa to 140 MPa. These experimental measurements were carried out using an apparatus, comprising a vibrating tube densimeter Anton Paar, calibrated with an uncertainty of about 0.7 kg* m-3. The volumetric behavior and excess molar volume of DBE + heptane were modeled using PC-SAFT equation. The PC-SAFT parameters of DBE and heptane were optimized using experimental density data at atmospheric pressure. The density of the mixture was reasonably well predicted, with a mean relative difference between 0.0009% and 1.99%. Whereas the excess molar volume not satisfactorily predicted. A Tait equation was used to adjust the experimental density data. In addition, from this equation the isobaric thermal expansion and the isothermal compressibility were derived.
Compounds
#
Formula
Name
1
C7H16
heptane
2
C8H18O
dibutyl ether
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.