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直接提取氧化物与N,N-Di(2-乙烯) 异布胺

Amy L Speelman¹, Daria Boglaienko¹, Avalon B Tarbet-Mendoza¹

¹Pacific Northwest National Laboratory, Richland, Washington 99352, United States.

|April 14, 2025

概括

直接提取氧化使用N,N-di(2-乙烯) 异胺 (DEHiBA) 为核燃料再加工提供了优势. 这种方法简化了废物管理和工厂设计,尽管水源需要进行工艺调整.

科学领域:

核化学核化学核化学
材料科学材料科学材料科学
化学工程是化学工程的重要组成部分.

背景情况:

传统的核燃料再加工涉及复杂的水电金步骤.
直接用溶剂提取氧化是一种具有潜在好处的替代方案,例如减少足迹和废物.
对于此类应用,N,N-di(2-乙基) 异芽胺 (DEHiBA) 是一个有前途的溶剂.

研究的目的:

研究氧化物 (UO2,α-U3O8,ε-UO3) 在n-多德干中直接提取到1.5M DEHiBA的方法.
通过分析紫外线光谱,分布比率和平衡水度来描述该过程.
为了验证提取反应的反应石化学.

主要方法:

在n-dodecane中使用1.5M DEHiBA进行氧化的溶剂提取.
溶剂相的光谱分析 (UV-VIS).
确定酸和的分布比率.
在有机阶段量化,酸和水.

主要成果:

证明了成功地将氧化物直接提取到DEHiBA.
确认了从不同氧化物形式提取的反应固态度.
测量了负载有机阶段的平衡水度,表明产生了水.
观察到由于溶解而形成一个单独的水相.

结论:

使用DEHiBA直接提取氧化物是可行的,并验证了假设的反应固态度.
该过程产生了一个单独的水相,需要在未来的再处理流程中考虑.
这种方法显示了更紧,更高效的核燃料再加工的潜力.

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