Carbamoylalkylphosphonates for Dramatic Enhancement of Uranium Extraction from Phosphates Ores

被引：23

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

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

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 2014年 / 32卷 / 07期

关键词：

selective extraction; phosphoric acid; bifunctional extractants; DEHCNPB; uranium; PHOSPHORIC-ACID; SOLVENT-EXTRACTION; RECOVERY; ESTER; VI;

D O I：

10.1080/07366299.2014.951279

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We describe here the full synthesis of a novel family of bifunctional ligands and present a complete study of their extraction properties in regards to an aqueous phosphoric acid solution containing uranium. We developed a high yielding synthesis of amido phosphonate ligands and focused our investigation on the effect of steric hindrance on the methylene bridge between the two functions. These new bifunctional ligands were found to extract selectively hexavalent uranium U(VI) with high distribution coefficient (D) and selectivity towards iron Fe (III) in 5 M phosphoric acid solution. From a structure-activity approach a specific ligand called DEHCNPB has been put forward in regard to the outstanding results obtained for the selective extraction, and quantitative recovery of uranium compared to the URPHOS reference system.

引用

页码：685 / 702

页数：18

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