Abstract Several (U1-xPux)O2±δ powders with different morphologies and different plutonium contents were synthetized using a sol-gel route. All the powders were fully characterized to quantify their structural parameters. After understanding and verification of the morphological effects on mixed oxide dissolution, this study consists of quantification of effect of plutonium content on dissolution kinetics using nitric acid 8.5 M at 95 °C. Significant differences in dissolution kinetics were observed. Indeed, the plutonium content is a key parameter that has to be considered in studies of (U1-xPux)O2±δ dissolution kinetics. A kinetics law was established and validated for dissolutions within these particular experimental conditions.

中文翻译：

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钚含量对 (U1-xPux)O2±δ 粉末溶解动力学的影响

摘要 采用溶胶-凝胶法合成了几种不同形貌、不同钚含量的(U1-xPux)O2±δ粉体。所有粉末都经过充分表征以量化其结构参数。在了解和验证对混合氧化物溶解的形态影响后，本研究包括在 95 °C 下使用 8.5 M 硝酸量化钚含量对溶解动力学的影响。观察到溶解动力学的显着差异。事实上，钚含量是研究 (U1-xPux)O2±δ 溶解动力学时必须考虑的关键参数。建立并验证了在这些特定实验条件下溶出的动力学定律。