在液体-液体提取系统中, (IV) 与Tc (VII) 和Re (VII) 的分化和复杂形成
Anton P Novikov1, Karim A Zagidullin1, Vitaly V Kuznetsov1,2
1Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31, Bldg. 4, Leninsky prosp., Moscow 119071, Russian Federation.
ACS omega
|September 2, 2025
概括
可以在酸溶液中提取,这对于核燃料再加工至关重要. 使用类同类物进行了Tc-Zr物种的联合提取研究,揭示了复杂的相互作用和二元/三元结构.
科学领域:
- 核化学
- 放射化学
- 分离科学
背景情况:
- 技术的提取对于废核燃料的再处理至关重要.
- 了解Tc-Zr相互作用是优化分离过程的关键.
- 对技术提取的协同作用需要详细研究.
研究的目的:
- 在酸中研究TC-VII-Zr-IV物种的形成和提取.
- 作为酸度的函数,评估技术分布系数 (D_Tc).
- 通过研究物种及其相互作用来描述共提取机制.
主要方法:
- 使用煤油/酸 (TBP) 进行溶剂提取.
- 单晶X射线衍射 (SCXRD) 用于-类型的结构分析.
- 希尔什菲尔德表面分析以研究非共价相互作用.
- MALDI-TOF和粉末X射线衍射 (PXRD) 用于复杂的表征.
主要成果:
- 的分布系数 (D_Tc) 在25-37M HNO3之间,由显著增强.
- 一个中性复合物,[{H2O) 3{ReO4) 3Zr-{μ-OH) 2Zr-{ReO4) 3{H2O) 3}·3H2O,在结构上进行了表征.
- 晶体包装主要由H·O/O·H相互作用 (63.0%).
- MALDI-TOF分析表明存在二度和三度Tc-Zr物种.
结论:
- 显著增强了技术的提取,证实了共提取协同作用.
- 这项研究提供了Tc-Zr物种形成和分子间相互作用的见解.
- 类比的特征化有助于理解含有系统中的酸的复杂行为.
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