Measurement and Correlation of the Solid-Liquid-Gas Equilibria for Carbon Dioxide + Octadecanoic Acid (Stearic Acid) and Carbon Dioxide + 1-Octadecanol (Stearyl Alcohol) Systems
The pressure p-temperature T projections of solid-liquid-gas (S-L-G) three-phase coexistence lines for the carbon dioxide + octadecanoic acid (stearic acid; C18H36O2) system and the carbon dioxide + 1-octadecanol (stearyl alcohol; C18H38O) system were measured by the first melting point method in which the initial appearance of the liquid phase was observed. The experimental p-T projections of the S-L-G lines were also correlated by the Peng-Robinson equation of state and the van der Waals type mixing rules with two binary interaction parameters introduced into attraction term and size terms, respectively. The present model gave good correlation results for all of the experimental S-L-G lines with maximum average absolute relative deviations of 0.32 % for the carbon dioxide + octadecanoic acid system and 0.32 % for the carbon dioxide + 1-octadecanol system.
Compounds
#
Formula
Name
1
C18H36O2
octadecanoic acid
2
C18H38O
1-octadecanol
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.