Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Heat capacity of isobutane in liquid phase at temperatures from 303 K to 413 K and pressures up to 12 MPa

Liu, Y.[Yu], Zhao, X.[Xiaoming], Lv, S.[Shaohua]
J. Chem. Thermodyn. 2017, 111, 265-270
ABSTRACT
The measurements of isobaric heat capacity for isobutane were carried out using a flow calorimeter in both compressed liquid and supercritical phase. 250 data of heat capacity were obtained at the temperature range from 303 K to 413 K at pressures up to 12 MPa. The relatively expanded uncertainty in the heat capacity measurement was estimated to be less than 1% with k = 2 (95%). An empirical equation was correlated to represent the experimental values with an average absolute deviation of 0.7%. In addition, the saturated liquid heat capacities of isobutane were also derived by extrapolating the empirical equation to the corresponding saturated pressure.
Compounds
# Formula Name
1 C4H10 2-methylpropane
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
  • 233
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Fluid (supercritical or subcritical phases)
  • Temperature, K; Fluid (supercritical or subcritical phases)
  • Pressure, kPa; Fluid (supercritical or subcritical phases)
  • Fluid (supercritical or subcritical phases)
  • Flow calorimetry
  • 17