URANIUM EXTRACTION FROM PHOSPHORIC ACID USING BIFUNCTIONAL AMIDO-PHOSPHONIC ACID LIGANDS

被引：37

作者：

Turgis, Raphael ^{[1
]}

Leydier, Antoine ^{[2
]}

Arrachart, Guilhem ^{[1
]}

Burdet, Fabien ^{[2
]}

Dourdain, Sandrine ^{[1
]}

Bernier, Gilles ^{[2
]}

Miguirditchian, Manuel ^{[2
]}

Pellet-Rostaing, Stephane ^{[1
]}

机构：

[1] ENSCM, UM2, Lab Tri Ion Syst Mol Auto Assembles, ICSM,CEA,CNRS,UMR 5257, F-30207 Bagnols Sur Ceze, France

[2] SMCS, LEPS, CEA, Nucl Energy Div,RadioChem & Proc Dept, Bagnols Sur Ceze, France

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 2014年 / 32卷 / 05期

关键词：

Bifunctional extractants; carbamoylphosphonic acid; uranium extraction; phosphoric acid; selectivity; SOLVENT-EXTRACTION; RECOVERY; OXIDE; SELECTIVITY; MIXTURES; VI;

D O I：

10.1080/07366299.2014.898435

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ligand systems containing amido-phosphonic acid moieties were synthesized for subsequent U(VI) extraction from phosphoric acid solutions. Studies have shown that the efficiency of extraction (distribution ratios and selectivity of U(VI) over Fe(III)) is influenced by the nature of the N-dialkyl substituents and the length and nature of the spacer. A structure-activity approach resulted in the identification of a specific ligand called DEHCBPA that exhibited larger D-values than the corresponding URPHOS reference system. The distribution ratios for U(VI) extraction increased considerably with a branched N-dialkyl chain when a steric hindrance was introduced into the methylene bridge of the amido-phosphonic acid ligands.

引用

页码：478 / 491

页数：14

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