High-temperature heat capacity of CdO–V2O5 oxides

Vanadates Cd2V2O7 and CdV2O6 have been prepared from CdO и V2O5 by three-phase synthesis with subsequent burning at 823–1073 K and 823–853 K, respectively. The molar heat capacity of these oxide compounds has been measured by differential scanning calorimetry. The enthalpy change, the entropy change, and the reduced Gibbs energy are calculated using the experimental dependences Cp = f(T). It is shown that there is a correlation between the specific heat capacity and the composition of CdO–V2O5 oxide system.