Uranium Extraction by a Bifunctional Amido-Phosphonic Acid: Coordination Structure and Aggregation

被引：16

作者：

Pecheur, Olivia ^{[1
,2
]}

Guillaumont, Dominique ^{[2
]}

Dourdain, Sandrine ^{[2
]}

Berthon, Laurence ^{[2
]}

Turgis, Raphael ^{[1
]}

Fillaux, Clara ^{[2
]}

Arrachart, Guilhem ^{[1
]}

Testard, Fabienne ^{[3
]}

机构：

[1] Inst Chim Separat Marcoule UMR 5257, Bagnols Sur Ceze, France

[2] CEA, Nucl Energy Div, Radiochem & Proc Dept, Bagnols Sur Ceze, France

[3] Univ Paris Saclay, CNRS, CEA Saclay, LIONS,NIMBE,CEA, Gif Sur Yvette, France

来源：

SOLVENT EXTRACTION AND ION EXCHANGE | 2016年 / 34卷 / 03期

关键词：

Uranium; phosphate; phosphonic; aggregation; bifunctional; SUBSTITUTED DIPHOSPHONIC ACIDS; RECOVERY; SCATTERING; COMPLEXES; CHEMISTRY; OXIDE;

D O I：

10.1080/07366299.2016.1169146

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Butyl-N,N-di(2-ethylhexyl)carbamoyl-nonylphosphonate (DEHCNPB) is a new amido-phosphonic acid bifunctional ligand with a high uranium extraction efficiency from wet phosphoric acid. In the present work, the DEHCNPB coordination structure toward uranium and its aggregation properties have been fully characterized using experimental and theoretical approaches. DEHCNPB forms associated species, and its aggregation properties such as aggregation number or CAC have been determined from SAXS and SANS measurements. The preferred site for bonding of DEHCNPB toward U(VI) has been determined from IR, EXAFS, and DFT calculations.

引用

页码：260 / 273

页数：14

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