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Issue 37, 2007
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Dissolution of UO2, UO3 and of some lanthanide oxides in BumimTf2N: effect of acid and water and formation of UO2(NO3)3

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Abstract

UO2, UO3, Nd2O3, Eu2O3 and Pr6O11 powders were successfully dissolved in the ionic liquid 1-methyl-3-butyl-imidazolium bistriflimide (BumimTf2N) with the help of small amounts of HNO3. The uranyl species have been characterised through UV-vis and EXAFS spectroscopies. The uranium dissolution leads to the formation of UO2(NO3)3, even in the presence of water. The kinetics of UO2 dissolution/oxidation is intricate, due to the transient existence of NO2, which is absent in the case of the UO3 dissolution, occurring with no change in the oxidation state of U.

Graphical abstract: Dissolution of UO2, UO3 and of some lanthanide oxides in BumimTf2N: effect of acid and water and formation of UO2(NO3)3−

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Article information


Submitted
26 Apr 2007
Accepted
26 Jun 2007
First published
08 Aug 2007

Dalton Trans., 2007, 4214-4221
Article type
Paper

Dissolution of UO2, UO3 and of some lanthanide oxides in BumimTf2N: effect of acid and water and formation of UO2(NO3)3

I. Billard, C. Gaillard and C. Hennig, Dalton Trans., 2007, 4214
DOI: 10.1039/B706355E

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