In this work, a separation and purification process of U(VI), Zr(IV) and I₂ from various fission products in nitric acid solution by 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([C₄mim][NTf₂]) and dibutyl-3-(3-methylimidazolium)propylphosphoramide bis(trifluoromethanesulfonyl)imide-task specific ionic liquid (phosphoramide-TSIL) was investigated. The phosphoramide-TSIL was found to reduce ligand loss compared to dibutyl propylphosphoramidate by total organic carbon testing (TOC). The stripping of U(VI), Zr(IV) and I₂ could be achieved by guanidine carbonate solution, oxalic acid solution and sodium hydroxide solution, respectively. The phosphoramide-TSIL/[C₄mim][NTf₂] showed good irradiation stability and recyclability. Phosphoramide-TSIL has the potential to be applied for separation and purification in the actual radioactive environment.

Graphical abstract

中文翻译：

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1-丁基-3-甲基咪唑双(三氟甲磺酰基)亚胺和磷酰胺功能化离子液体从各种裂变产物中选择性分离铀、锆和碘

本工作采用1-丁基-3-甲基咪唑鎓双(三氟甲磺酰基)亚胺([C _{4 mim][C 4} mim][ NTf ₂ ]) 和二丁基-3-(3-甲基咪唑)丙基磷酰胺双(三氟甲磺酰基)亚胺-任务特异性离子液体(磷酰胺-TSIL)进行了研究。通过总有机碳测试 (TOC) 发现，与二丁基丙基磷酰胺相比，磷酰胺-TSIL 可减少配体损失。U(VI)、Zr(IV)和I ₂的反萃取可分别通过碳酸胍溶液、草酸溶液和氢氧化钠溶液实现。磷酰胺-TSIL/[C ₄ mim][NTf ₂] 表现出良好的辐照稳定性和可回收性。磷酰胺-TSIL具有在实际放射性环境中用于分离纯化的潜力。

图形概要