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@ARTICLE{DiazGomez:917292,
author = {Diaz Gomez, Laura Johana and Wilden, Andreas and Schneider,
Dimitri and Paparigas, Zaina and Modolo, Giuseppe and Gullo,
Maria Chiara and Huskens, Jurriaan and Verboom, Willem},
title = {{S}ynthesis and evaluation of new modified diglycolamides
with different stereochemistry for extraction of tri- and
tetravalent metal ions},
journal = {New journal of chemistry},
volume = {47},
number = {10},
issn = {0398-9836},
address = {London},
publisher = {RSC},
reportid = {FZJ-2023-00522},
pages = {4619-4627},
year = {2023},
abstract = {Americium separation from high level nuclear waste can
provide certain benefits such as reducing the long-term heat
generation or the possibility of re-use as fuel in
innovative reactors. The separation is carried out through
solvent extraction. Among commonly used ligands,
diglycolamide (DGA) derivatives have shown high distribution
ratios for trivalent lanthanides (Ln(III)) and actinides
(An(III)). Recently, different diastereomers of DGAs with
substitutions in the backbone have shown an inverse
selectivity for Am over Cm, in comparison with commonly used
DGAs. Hence, we synthesised, characterized, and tested novel
<i>syn</i>- and <i>anti</i>-diastereomers of
tetra-<i>n</i>-octyl and tetra-<i>n</i>-decyl DGAs with two
propyl and ethyl-methyl substituents at the backbone
methylene carbon atoms. The distribution ratios for An(III)
and Ln(III) were found to be generally lower than for the
unsubstituted parent molecules due to steric hindrance. On
the other hand, <sup>239</sup>Pu was much better extracted.
All tested ligands showed the inverse selectivity for Am
with an Am/Cm separation factor (SF<sub>Am/Cm</sub>) around
1.5. Finally, slope analysis confirmed a 1:3 metal:ligand
ratio for the DGA complexes.},
cin = {IEK-6},
ddc = {540},
cid = {I:(DE-Juel1)IEK-6-20101013},
pnm = {1412 - Predisposal (POF4-141) / SEPAM - Verbundprojekt:
Untersuchungen zur SEParation von Americium aus
hochradioaktiven Abfalllösungen (SEPAM), Teilprojekt A
(02E11921A)},
pid = {G:(DE-HGF)POF4-1412 / G:(DE-Juel1)02E11921A},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000913958300001},
doi = {10.1039/D2NJ05663A},
url = {https://juser.fz-juelich.de/record/917292},
}