Abstract
Oxygen pressures in equilibrium with the cerium oxides have been determined by equilibration with CO CO 2 or H 2 H 2 O mixtures at temperatures from 636 to 1169°C. Partial and integral free energies, enthalpies and entropies have been calculated. The results are used to construct the cerium-oxygen phase diagram at these temperatures, between the compositions CeO 1·5 and CeO 2·0.
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