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从和稀土元素中选择性提取 (IV) 使用四乙烯-1,2-二比 (胺酸)

Abhijit Saha¹, Khushboo Kumari¹, Shikha Sharma²

¹Radioanalytical Chemistry Division, Bhabha Atomic Research Centre, Mumbai, India 400085.

Inorganic chemistry

|June 3, 2023

概括

这项研究引入了一种新的方法,用于提取 (Th),使用胺酸联体和离子液体. 该过程提供了高选择性和效率,对于燃料循环应用至关重要.

科学领域:

核化学核化学核化学
分离科学分离科学
材料化学材料化学

背景情况:

(Th) 提取对于核燃料循环至关重要.
从其他元素中选择性地分离仍然是一个挑战.
离子液体为溶剂提取提供独特的特性.

研究的目的:

开发一种新的液体-液体提取的方法.
调查开发的提取系统的效率和选择性.
描述提取的复合物及其潜在的应用.

主要方法:

液体-液体提取使用四乙烯-1,2-二甲 (酸) 和室温离子液体在.
分布比率 (D) 和净化因子 (α) 的确定.
扩展的X射线吸收细结构 (EXAFS) 光谱和密度函数理论 (DFT) 用于结构分析.

主要成果:

通过高分布比率 (D) (12.4 ± 0.1) ×103在2-8mol L-1酸度中实现了Th (IV) 的有效提取.
从,化物和过渡金属中获得Th (IV) 的高净化因子 (α).
形成1:2金属/联结体复合体,由EXAFS和DFT研究证实.
提取的复合物很容易转化为ThO2.

结论:

开发的胺酸离子液体系统为提取提供了选择性和高效的提取方法.
这种方法可以轻松地分离和净化.
这种技术在矿开采和核燃料再加工方面有直接应用.

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