Measurements and Modeling of Volumetric and Phase Behavior of Carbon Dioxide + Higher Alkanes: CO2 + n-Pentadecane at Temperatures 313 to 410 K and Pressures up to 77 MPa
Experimental compressed liquid density and bubble pressure of {xCO2 + (1-x)C15H32} are reported for x = (0.376, 0.562, and 0.757) at temperatures from (313, 363, and 410) K, and pressures from bubble points up to about 77 MPa. Density was measured using a vibrating U-tube driven and scanned in frequency domain by a lock-in amplifier to accurately measure the resonance peak, in complex form where density is determined with an expanded uncertainty of U() = 0.003. The experimental measurements are compared with cubic equations of state of Redlich-Kwong-Soave (RKS), Peng-Robinson 1976 (PR76), and the improved version Peng-Robinson 1978 (PR78) - with and without volume translation correction. PR78 EOS gives best predictions with an average deviation of 1.2 %. The deviations are maximum near the bubble points and increase in a systematic manner with increasing CO2 mole fraction x. Bubble pressures were determined from the
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
C15H32
pentadecane
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.