E-pO²⁻ diagram for rare earth elements in molten salt

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• 作者：Yixing (Kevin) Shen ; Jinsuo Zhang ; ^{zhang.3558@osu.edu}
• 关键词：E-pO2&minus ; Diagram ; molten salt ; pyroprocessing ; fuel cycle ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：35
• 期：2
• 页码：187-192
• 全文大小：1064 K
• 卷排序：35

文摘

Electro-reduction of spent nuclear oxide fuels in molten salt was the key step of pyroprocessing for oxide fuel treatment. In the present study, the E-pO2− diagram for rare earth elements in molten LiCl-KCl at 450 °C were developed based available experimental data. E-pO2− diagrams could show the stability of each chemical compound in the salt, and therefore, the diagrams could be applied to predict experimental conditions for electro-reduction of spent nuclear fuel efficiently. Compared with the available E-pO2− diagrams, the present study concerned the activity coefficient of the element studied in the molten salt in all reactions, which made the diagram be more reliable and accurate.