Abstract:Simple predictive relationships for the estimation of pure normal alkanes' thermodynamic properties, like transition temperatures, phase change enthalpies, and heat capacities in the solid or liquid state, are established as a function of carbon atom number n c , by combining our own calorimetric experimental results and a general review of literature data. This study underlines that total and melting enthalpies vary linearly with n c carbon atom number, whatever the parity of n c , while order-disorder transi… Show more
“…Symmetry arguments have been applied to correlations for the heat capacity of solid asphaltenes and heavy oils. A simple lumped approach for the correlation of the heat capacity of asphaltenes and heavy oils [3] based on a correlation for n-alkanes [59] proved successful. The model, which fit the heat capacity for three asphaltenes and two heavy oils, suggests that the average repeat unit within these fluids is less than 120 amu.…”
Section: Heat Capacity Of Large Polynuclear Aromatic Compoundsmentioning
“…Symmetry arguments have been applied to correlations for the heat capacity of solid asphaltenes and heavy oils. A simple lumped approach for the correlation of the heat capacity of asphaltenes and heavy oils [3] based on a correlation for n-alkanes [59] proved successful. The model, which fit the heat capacity for three asphaltenes and two heavy oils, suggests that the average repeat unit within these fluids is less than 120 amu.…”
Section: Heat Capacity Of Large Polynuclear Aromatic Compoundsmentioning
“…3. Additionally, as pure heptadecane presents one solid-solid phase transition few Kelvin below the melting temperatures [15], both liquid-solid and solid-solid equilibrium lines [16] of n-heptadecane were added in Fig. 3 in order to display the full projection of the binary system phase behaviour in the pressure-temperature range of interest.…”
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