This title appears in the Scientific Report :
2023
Please use the identifier:
http://dx.doi.org/10.34734/FZJ-2023-02570 in citations.
Please use the identifier: http://dx.doi.org/10.1080/07366299.2023.2221290 in citations.
Gamma Radiolysis of Phenyl-Substituted TODGAs: Part II
Gamma Radiolysis of Phenyl-Substituted TODGAs: Part II
The radiolytic degradation chemistry of three phenylated analogs of N,N,N’,N’-tetraoctyl diglycolamide (TODGA) was investigated: 2-(2-(di-n-octylamino)-2-oxoethoxy)-N,N-di-n-octyl-2-phenylacetamide (PhTODGA), which has a phenyl substituent bound to a central methylene, 2-(2-(di-n-octylamino)-2-oxo-1...
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Personal Name(s): | Zarzana, Christopher A. (Corresponding author) |
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McAlpine, Jack / Wilden, Andreas / Hupert, Michelle / Stärk, Andrea / Iqbal, Mudassir / Verboom, Willem / Vandevender, Aspen N. / Mincher, Bruce J. / Groenewold, Gary S. / Modolo, Giuseppe | |
Contributing Institute: |
Analytik; ZEA-3 Nukleare Entsorgung; IEK-6 |
Published in: | Solvent extraction and ion exchange, 41 (2023) 5, S. 582-605 |
Imprint: |
Philadelphia, PA
Taylor & Francis
2023
|
DOI: |
10.34734/FZJ-2023-02570 |
DOI: |
10.1080/07366299.2023.2221290 |
Document Type: |
Journal Article |
Research Program: |
GEN IV Integrated Oxide fuels recycling strategies Safety of ACtinide Separation proceSSes Predisposal |
Link: |
Published on 2023-07-06. Available in OpenAccess from 2024-07-06. Restricted Restricted |
Publikationsportal JuSER |
Please use the identifier: http://dx.doi.org/10.1080/07366299.2023.2221290 in citations.
The radiolytic degradation chemistry of three phenylated analogs of N,N,N’,N’-tetraoctyl diglycolamide (TODGA) was investigated: 2-(2-(di-n-octylamino)-2-oxoethoxy)-N,N-di-n-octyl-2-phenylacetamide (PhTODGA), which has a phenyl substituent bound to a central methylene, 2-(2-(di-n-octylamino)-2-oxo-1-phenylethoxy)-N,N-di-n-octylpropanamide (PhMeTODGA), which also contains a methyl substituent bound to the methylene on the other side of the ether moiety, and, 2-(2-N-n-hexyl-N-phenylamino)-2-oxoethoxy)-N-n-hexyl-N-phenylacetamide (DHDPDGA), which has phenyl substituents located on the amide groups instead of the central methylenes. In Part II of this series of papers radiolytic degradation products were identified after separation with liquid chromatography by High Resolution, Accurate-Mass mass spectrometry and collision-induced dissociation. At least twenty-two radiolytic degradation products were identified for PhTODGA, twenty-nine for PhMeTODGA, and over three dozen for DHDPDGA. The suite of radiolytic degradation products of these three investigated ligands was significantly larger than has been reported for previously studied diglycolamides, owing to their asymmetric nature, and to the identification of several new degradation mechanisms, including addition of methyl, hydroxyl, and nitrogen oxide radicals, that have not been previously reported for diglycolamides. Degradation products that contained addition of a NO2 or NO3 group were particularly prevalent for DHDPDGA, likely due to the phenyl side-groups. Several of these newly observed mechanisms do not appear to depend on the presence of the phenyl groups, suggesting these novel mechanisms may apply to other diglycolamides |