复合和提取三价乙化物超过兰坦化物使用具有不同侧链的高度可溶性胺联体的三价乙化物
Taoyuan Xiu1, Likun Liu2, Siyan Liu3
1College of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China; Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China; China Institute of Atomic Energy, Beijing 102413, China.
Journal of hazardous materials
|January 16, 2024
概括
在高度酸性条件下,新的二氧化联体提供了增强的溶解性和选择性,可以在高度酸性条件下将三价乙化物 (An(III)) 与化物 (Ln(III)) 分离,从而改善核废物管理策略.
科学领域:
- 放射化学 放射化学是指辐射化学.
- 材料科学 材料科学 材料科学
- 分离科学 分离科学
背景情况:
- 类二胺联体在高酸度下分离三价乙化物 (An(III)) 和化物 (Ln(III)) 时面临着溶解性和性能方面的挑战.
- 现有的配体在有机溶剂中具有有限的溶解性,这阻碍了它们的实际应用.
研究的目的:
- 设计和合成新型的胺联体,以提高An(III) /Ln(III) 分离的可溶性和选择性.
- 为了研究结构修改对高酸度环境中的配体性能的影响.
主要方法:
- 三种含有基链,基组和基环的类二胺联体的合成.
- 在3-二二中测量溶解度.
- 液体-液体提取实验,以评估高度酸对Am(III) 与Eu(III) 的选择性.
- 使用斜率分析,单晶X射线衍射,UV-Vis光谱学,质谱学和NMR光谱学进行表征.
主要成果:
- 合成的配方体在3-二二中显著增强溶解率 (>600 mmol/L).
- 这三种干都对Am(III) 具有良好的选择性.
- 最优的配体在4mol/L HNO3时达到53的分离因子 (SFAm/Eu),表明高度有效的AnIII) /LnIII) 分离.
- 复杂化研究证实了1:1和1:2金属配体物种的形成.
结论:
- 设计的二氧化联体克服了可溶性限制,并且在高酸度下显示出对An(III) 与Ln(III) 分离的出色选择性.
- 这些发现为开发用于核燃料再加工和废物管理的先进配体提供了基础.
- 结构修改,包括加入环,对于提高选择性和性能至关重要.
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