Calorimetric investigations on stoichiometric barium and uranium oxides
Abstract
Heat capacities and enthalpy increments of barium uranates: BaU 2O 7(s), Ba 2U 3O 11(s), Ba 2.875UO 5.875(s) and Ba 3UO 6(s) were measured using a differential scanning calorimeter and a high-temperature Calvet calorimeter. The heat capacities and enthalpy increments were measured in the temperature range 126-304 K and 299-1011 K, respectively. A set of self consistent thermodynamic functions such as entropy, Gibbs energy function, heat capacity and Gibbs energy and enthalpy of formation values for BaU 2O 7(s), Ba 2U 3O 11(s), Ba 2.875UO 5.875(s) and Ba 3UO 6(s) have been computed for the first time using the data obtained in the present study and other available experimental data.
- Publication:
-
Journal of Nuclear Materials
- Pub Date:
- September 2010
- DOI:
- 10.1016/j.jnucmat.2010.06.019
- Bibcode:
- 2010JNuM..404....9D