Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic properties of biofuels: Heat capacities of binary mixtures containing ethanol and hydrocarbons up to 20 MPa and the pure compounds using a new flow calorimeter

Vega-Maza, D.[David], Segovia, J. J.[Jose J.], Martin, M. C., Villamanan, R. M.[Rosa M.], Chamorro, C. R.[Cesar R.], Villamanan, M. A.[Miguel A.]
J. Chem. Thermodyn. 2011, 43, 12, 1893-1896
ABSTRACT
Heat capacities are of great significance in the design of new processes and the improvement of existing ones in R&D in production plants as well as the adaptation of new products, in this case, biofuels to their use in a variety of engines and technical devices. An automated flow calorimeter has been developed for the accurate measurement of isobaric heat capacities for pure compounds and mixtures over the range (250 to 400) K and (0 to 20) MPa. In this paper, isobaric heat capacities for heptane, ethanol and the binary mixtures of ethanol with heptane and toluene are reported.
Compounds
# Formula Name
1 C2H6O ethanol
2 C7H16 heptane
3 C7H8 toluene
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
  • Molar heat capacity at constant pressure, J/K/mol ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Flow calorimetry
  • 20
  • POMD
  • 2
  • Molar heat capacity at constant pressure, J/K/mol ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Flow calorimetry
  • 20
  • POMD
  • 1
  • 2
  • Molar heat capacity at constant pressure, J/K/mol ; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Flow calorimetry
  • 55
  • POMD
  • 1
  • 3
  • Molar heat capacity at constant pressure, J/K/mol ; Liquid
  • Pressure, kPa; Liquid
  • Mole fraction - 3; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Flow calorimetry
  • 55