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@ARTICLE{Wilden:845391,
author = {Wilden, Andreas and Mincher, Bruce J. and Mezyk, Stephen P.
and Twight, Liam and Rosciolo-Johnson, Kristyn M. and
Zarzana, Chris A. and Case, Mary E. and Hupert, Michelle and
Stärk, Andrea and Modolo, Giuseppe},
title = {{R}adiolytic and {H}ydrolytic {D}egradation of the
{H}ydrophilic {D}iglycolamides},
journal = {Solvent extraction and ion exchange},
volume = {36},
number = {4},
issn = {0736-6299},
address = {Philadelphia, PA},
publisher = {Taylor $\&$ Francis},
reportid = {FZJ-2018-02662},
pages = {347-359},
year = {2018},
abstract = {The stability of different hydrophilic diglycolamides
against acid degradation and radiolysis was studied.
Tetraethyldiglycolamide (TEDGA) was found to undergo
degradation in nitric acid at high reaction rates at
elevated temperatures with a maximum of a $~8\%$ decrease
per hour at 65°C in 4 mol L 1 HNO3. The radiolysis was
studied for tetramethyldiglycolamide (TMDGA), TEDGA,
methyl-tetraethyldiglycolamide (Me-TEDGA), and
dimethyl-tetraethyldiglycolamide (Me2-TEDGA). The
degradation rates decreased with increasing molecular
weight, following the trend TMDGA > TEDGA > Me-TEDGA ≥
Me2-TEDGA. Degradation products were identified by mass
spectrometric techniques and were found to be comparable to
those previously reported for the radiolysis of lipophilic
diglycolamides in dodecane. Significant insight into the
degradation mechanism in water was gained using pulse
radiolysis experiments. The •OH radical was identified as
the most important reactive species and predominant
mechanism of radical reaction is one of electron transfer
rather than H-atom abstraction.},
cin = {IEK-6 / ZEA-3},
ddc = {540},
cid = {I:(DE-Juel1)IEK-6-20101013 / I:(DE-Juel1)ZEA-3-20090406},
pnm = {161 - Nuclear Waste Management (POF3-161) / GENIORS - GEN
IV Integrated Oxide fuels recycling strategies (755171)},
pid = {G:(DE-HGF)POF3-161 / G:(EU-Grant)755171},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000445878000002},
doi = {10.1080/07366299.2018.1495384},
url = {https://juser.fz-juelich.de/record/845391},
}