合成btrzphen4醇的新途径:用于选择性剥离镅的亲水性2,9-双三唑-1,10-菲罗啉配体

IF 3.3 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
P. Troosters, T. Opsomer, K. Van Hecke, K. Verguts, F. Reniers, K. Van Hoecke, P. Zsabka, T. Cardinaels and W. Dehaen
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引用次数: 0

摘要

由于存在三价镧系元素和Cm(III),从核废料流中选择性分离Am(III)是一项极具挑战性的任务。以1,2,4-三嗪或1,2,3-三唑修饰的1,10-菲罗啉配体已成为实现这种分离的有前途的萃取剂。在这篇文章中,报道了一种新的强大的合成途径,以获得亲水的,符合CHON的双三氮基菲罗啉配体btrzphen4 -醇。btrzphen4 -醇作为盐酸盐和自由碱均可合成,总收率分别为66%和48%。该配体在稀硝酸溶液中表现出良好的溶解度和稳定性,在0.5 mol L−1 HNO3中50°C下3天后没有观察到分解。此外,它对Am(III)和Eu(III)表现出快速的溶出动力学。在0.26 mol L−1 HNO3条件下,用btrzphen4 -tetraol、TODGA和Am(III)、Cm(III)和Eu(III)放射性示踪剂进行液液萃取实验,得到Eu(III)/Am(III)和Cm(III)/Am(III)的最大分离因子分别为84和2.4。值得注意的是,用btrzphen4 -醇实现的分离因子与现有系统相当。虽然在给定条件下,BTrzPhen浓度对Am和Cm分布比的影响很小,但这些结果强调了亲水性BTrzPhen配体对选择性剥离镅的有效性,并鼓励进一步优化以提高性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

New synthetic pathway towards BTrzPhen-tetraol: a hydrophilic 2,9-bis-triazolyl-1,10-phenanthroline ligand for selective americium stripping†

New synthetic pathway towards BTrzPhen-tetraol: a hydrophilic 2,9-bis-triazolyl-1,10-phenanthroline ligand for selective americium stripping†

New synthetic pathway towards BTrzPhen-tetraol: a hydrophilic 2,9-bis-triazolyl-1,10-phenanthroline ligand for selective americium stripping†

Selectively separating Am(III) from nuclear waste streams is an extremely challenging task due to the presence of the trivalent lanthanides and Cm(III). 1,10-Phenanthroline ligands decorated with 1,2,4-triazines or 1,2,3-triazoles have emerged as promising extractants for achieving such separation. In this article, a new robust synthetic pathway towards the hydrophilic, CHON compliant bistriazoylphenanthroline ligand BTrzPhen-tetraol is reported. BTrzPhen-tetraol was synthesised both as the hydrochloride and as a free base with overall yields of 66% and 48%, respectively. The ligand demonstrated excellent solubility and stability in dilute nitric acid solutions, with no observable decomposition after three days in 0.5 mol L−1 HNO3 at 50 °C. Additionally, it exhibited rapid stripping kinetics for Am(III) and Eu(III). Liquid–liquid extraction experiments conducted with BTrzPhen-tetraol, TODGA, and radiotracers of Am(III), Cm(III), and Eu(III) yielded maximum Eu(III)/Am(III) and Cm(III)/Am(III) separation factors of 84 and 2.4, respectively, at 0.26 mol L−1 HNO3. Notably, the separation factors achieved with BTrzPhen-tetraol are comparable to those of existing systems. While only a minor influence of the BTrzPhen concentration on the distribution ratios of Am and Cm was observed under the given conditions, these results highlight the effectiveness of hydrophilic BTrzPhen ligands for selective americium stripping and encourage further optimisation to enhance performance.

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来源期刊
Dalton Transactions
Dalton Transactions 化学-无机化学与核化学
CiteScore
6.60
自引率
7.50%
发文量
1832
审稿时长
1.5 months
期刊介绍: Dalton Transactions is a journal for all areas of inorganic chemistry, which encompasses the organometallic, bioinorganic and materials chemistry of the elements, with applications including synthesis, catalysis, energy conversion/storage, electrical devices and medicine. Dalton Transactions welcomes high-quality, original submissions in all of these areas and more, where the advancement of knowledge in inorganic chemistry is significant.
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