High-temperature heat capacity of oxides of the CuO–V2O5 system

Abstract

CuV₂O₆ and Cu₂V₂O₇ compounds have been produced from initial components CuO and V₂O₅ by solid-phase synthesis. The high-temperature heat capacity of the oxide compounds has been measured using differential scanning calorimetry. The thermodynamic properties (the enthalpy change, the entropy change, and the reduced Gibbs energy) have been calculated using experimental dependences C_P = f(T). It is found that there is a correlation between the specific heat capacity and the composition of oxides of the CuO–V₂O₅ system.