Selective separation of uranium,zirconium and iodine from various fission products by 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide and phosphoramide-functionalized ionic liquid期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Selective separation of uranium,zirconium and iodine from various fission products by 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide and phosphoramide-functionalized ionic liquid

Authors:	Guo Zong Chu Taiwei

Affiliation:	1.Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China ;

Abstract:	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

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