Heat capacity measurements on uranium–cerium mixed oxides by differential scanning calorimetry |
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| Authors: | R Venkata Krishnan K Nagarajan |
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| Institution: | Pyrochemical Processing Studies Section, Fuel Chemistry Division, Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603102, Tamilnadu, India |
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| Abstract: | Uranium–cerium mixed oxides of three different compositions (U0.2Ce0.8)O2, (U0.5Ce0.5)O2 and (U0.8Ce0.2)O2, were prepared by combustion synthesis and characterized by XRD. The compositional characterization was done by ICP-AES. Heat capacity measurements employed a heat flux type differential scanning calorimeter from 280 to 820 K. The heat capacity values of (U0.2Ce0.8)O2, (U0.5Ce0.5)O2 and (U0.8Ce0.2)O2 at 298 K are 62.8, 64.2 and 70.1 J K−1 mol−1, respectively. Enthalpy increment, entropy and Gibbs energy function were computed from the heat capacity data. |
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| Keywords: | Heat capacity Differential scanning calorimetry Thermodynamic properties Uranium Cerium Mixed oxides |
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