Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Thermodynamic and spectroscopic properties of Co7/3Sb2/3O4

Knyazev, A. V., Smirnova, N. N., Maczka, M., Hermanowicz, K., Knyazeva, S. S., Letyanina, I. A., Lelet, M. I.
J. Chem. Thermodyn. 2014, 74, 201-208
ABSTRACT
The temperature dependence of heat capacity of Co7/3Sb2/3O4 has been measured for the first time in the range from (6 to 337) K by precision adiabatic vacuum calorimetry. The experimental data were used to calculate standard thermodynamic functions, namely the heat capacity, enthalpy H (T) H (0), entropy S (T) S (0) and Gibbs function G (T) H (0), for the range from T?(0 to 337) K. Additional spectroscopic studies were carried out to study the nature of the phase transition at T = 60.3 K. The structure of Co7/3Sb2/3O4 is refined by the Rietveld method: space group F d3m, Z = 8, a = 10.3793(2) A, V = 1118.14(4) A3. The high-temperature X-ray diffraction was used for the determination of temperature of high-temperature phase transition and coefficient of thermal expansion.
Compounds
# Formula Name
1 Co7O12Sb2 antimony cobalt oxide (Sb2Co7O12)
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
  • Triple point temperature, K ; Crystal 3
  • Crystal 3
  • Crystal 2
  • Gas
  • Adiabatic calorimetry
  • 1
  • POMD
  • 1
  • Triple point temperature, K ; Crystal 2
  • Crystal 2
  • Crystal 1
  • Air at 1 atmosphere
  • DTA
  • 1
  • POMD
  • 1
  • Mass density, kg/m3 ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • X-ray diffraction
  • 10
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Vacuum adiabatic calorimetry
  • 34
  • POMD
  • 1
  • Molar enthalpy, kJ/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Vacuum adiabatic calorimetry
  • 34
  • POMD
  • 1
  • Molar entropy, J/K/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Vacuum adiabatic calorimetry
  • 34
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal 3
  • Temperature, K; Crystal 3
  • Pressure, kPa; Crystal 3
  • Crystal 3
  • Vacuum adiabatic calorimetry
  • 16
  • POMD
  • 1
  • Molar enthalpy, kJ/mol ; Crystal 3
  • Temperature, K; Crystal 3
  • Pressure, kPa; Crystal 3
  • Crystal 3
  • Vacuum adiabatic calorimetry
  • 16
  • POMD
  • 1
  • Molar entropy, J/K/mol ; Crystal 3
  • Temperature, K; Crystal 3
  • Pressure, kPa; Crystal 3
  • Crystal 3
  • Vacuum adiabatic calorimetry
  • 16
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal 3
  • Temperature, K; Crystal 3
  • Pressure, kPa; Crystal 3
  • Crystal 3
  • Vacuum adiabatic calorimetry
  • 37
  • POMD
  • 1
  • Molar heat capacity at constant pressure, J/K/mol ; Crystal 2
  • Temperature, K; Crystal 2
  • Pressure, kPa; Crystal 2
  • Crystal 2
  • Vacuum adiabatic calorimetry
  • 97