在离子液和分子溶剂中与DHOA和TBP复合的阿克提尼尔离子:它们有多相似或有多不同?
Dharmendra B Sharma1,2, Mridusmita Sarma3, Seraj A Ansari1,2
1Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
The journal of physical chemistry. B
|December 2, 2024
概括
烯离子与TBP和DHOA联体的复合在离子液体中比分子溶剂在热力学上更有利. 本研究详细介绍了在这些不同的介质中形成的乌兰复合物的热力学和结构.
科学领域:
- 核化学 核化学 核化学
- 解决方案化学 解决方案化学
- 热力学是一种热力学.
背景情况:
- 了解乌兰离子复合对于核燃料再加工至关重要.
- 与传统的分子溶剂相比,离子液体具有独特的溶剂性能.
- 三酸 (TBP) 和二酸胺 (DHOA) 是核分离中的关键配体.
研究的目的:
- 研究乌拉尼尔离子与TBP和DHOA的复合热力学.
- 为了比较一个离子液 (1--3-甲基化二) 与一个分子溶剂 (乙二) 的复合形成.
- 阐明形成的乌拉尼尔复合物的结构和结合特性.
主要方法:
- 光学光谱测定形成常数 (log β).
- 热量计定位以评估热力学有利性.
- 里叶变换红外光谱 (FTIR) 和密度函数理论 (DFT) 对结合性和复杂结构的计算.
主要成果:
- 乌拉尼尔离子逐步形成ML1和ML2物种,具有TBP和DHOA.
- 在离子液中观察到较高的形成常数 (log β) 与乙二相比.
- 复杂的形成反应在热力学上更有利于离子液体.
- DFT和FTIR指的是离子液中的阴离子复合物 ([UO2H2O) 3连接物) 2 2+) 和酸中的中性复合物 ([UO2NO3) 2连接物) 2).
结论:
- 与乙二相比,离子液提供了一个优越的介质,用于与TBP和DHOA的乌兰离子复合.
- 溶剂环境极大地影响了乌兰复合物的热力学和结构.
- 这项研究有助于理解核材料加工中的溶剂效应.
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