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| HAL : in2p3-00180956, version 1 |
| DOI : 10.1039/b706355e |
| Fiche détaillée |  Récupérer au format |
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| Dalton Transactions (2007) 4214-4221 |
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| Dissolution of $UO_2$, $UO_3$ and of some lanthanide oxides in Bumim $Tf_2$N: effect of acid and water and formation of $UO_2(NO_3)_3^–$ |
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| I. Billard1C. Gaillard1C. Hennig |
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| (2007) |
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| UO_2, UO_3, Nd_2O_3, Eu_2O_3 and Pr_6O_11 powders were successfully dissolved in the ionic liquid 1-methyl-3-butyl-imidazolium bistriflimide (BumimTf_2N) with the help of small amounts of HNO_3. The uranyl species have been characterised through UV-vis and EXAFS spectroscopies. The uranium dissolution leads to the formation of UO_2(NO_3)_3^–, even in the presence of water. The kinetics of UO_2 dissolution/oxidation is intricate, due to the transient existence of NO_2^–, which is absent in the case of the UO_3 dissolution, occurring with no change in the oxidation state of U. |
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| 1 : | DRS-IPHC - Département Recherches Subatomiques |
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| Thème(s) | : | Chimie/Radiochimie |
| in2p3-00180956, version 1 | |
| http://hal.in2p3.fr/in2p3-00180956 | |
| oai:hal.in2p3.fr:in2p3-00180956 | |
| Contributeur : Béatrice Forrler | |
| Déposé pour le compte de : | |
| Soumis le : Lundi 22 Octobre 2007, 15:24:44 | |
| Dernière modification le : Lundi 22 Octobre 2007, 19:58:08 | |
