Radiolytic degradation of hydrophilic PyTri ligands for minor actinide recycling

被引：15

作者：

Mossini, Eros ^{[1
]}

Macerata, Elena ^{[1
]}

Brambilla, Luigi ^{[2
]}

Panzeri, Walter ^{[3
]}

Mele, Andrea ^{[2
,3
]}

Castiglioni, Chiara ^{[2
]}

Mariani, Mario ^{[1
]}

机构：

[1] Politecn Milan, Dept Energy, Piazza L da Vinci 32, I-20133 Milan, Italy

[2] Politecn Milan, Dept Chem Mat & Chem Engn, Piazza L da Vinci 32, I-20133 Milan, Italy

[3] Sez UOS Milano Politecn, CNR, Ist Chim Riconoscimento Mol, Via L Mancinelli 7, I-20131 Milan, Italy

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2019年 / 322卷 / 03期

基金：

欧盟地平线“2020”; 欧盟第七框架计划;

关键词：

FT-Raman; ESI-MS; i-SANEX; PyTri ligands; Radiolysis; Minor actinides partitioning; SOLVENT-EXTRACTION; I-SANEX; RADIATION-CHEMISTRY; SEPARATION; STABILITY; ARTICLE; TODGA; DIGLYCOLAMIDES; COMPLEXATION; LANTHANIDES;

D O I：

10.1007/s10967-019-06772-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The 2,6-bis[1H-1,2,3-triazol-4-yl]-pyridine (PyTri) chelating unit has already shown promising properties for application to advanced hydrometallurgical processes aimed at recovering minor actinides from highly active raffinate. Radiolytic stability is an undeniable key requirement for chemicals involved in highly radioactive solutions partitioning, since radiolysis can have a huge impact on system safety and performances. In this work, the radiolytic degradation of two hydrophilic PyTri complexing agents was investigated by different analytical techniques. The radiation damage was delivered by a Co-60 source. The main radiation-induced ligand degradation by-products were hypothesized. Unprecedented PyTri ligands radiolytic stability was proved, further recommending their implementation in future partitioning processes.

引用

页码：1663 / 1673

页数：11

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