caa a22 4500 606150625 CHVBK 20210128100540.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10512-015-9990-9 doi (NATIONALLICENCE)springer-10.1007/s10512-015-9990-9 Electrochemical Model of Uranium Dioxide Dissolution in Nitric Acid [Elektronische Daten] [B. Ershov, S. Kulyukhin] The aim of this work is to validate the electrochemical model of the dissolution of uranium nitride in nitric acid. It is shown that uranium nitride dissolution in water solutions of HNO3 can be explained by the presence of electrochemical processes which are interrelated but proceed separately: UN dissolution at the anode, subsequent chemical decomposition of UN in the space near the anode, and oxidation of HNO3 at the cathode. The proposed model explains the isotopic composition and ratio of the products formed in the gas phase. The mechanism of the process of uranium nitride dissolution in nitric acid can be described by the total reaction 6UN + 25HNO3 → 6UO2(NO3)2 + 3NH3 + N2 + N2O + 6NO + 6NO2 + 8H2O. Springer Science+Business Media New York, 2015 Ershov B. Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IFKhE RAN), Moscow, Russia aut Kulyukhin S. Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IFKhE RAN), Moscow, Russia aut Atomic Energy Springer US; http://www.springer-ny.com 118/4(2015-08-01), 261-264 1063-4258 118:4<261 2015 118 10512 https://doi.org/10.1007/s10512-015-9990-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10512-015-9990-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ershov B. Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IFKhE RAN), Moscow, Russia aut NATIONALLICENCE 700 1- Kulyukhin S. Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IFKhE RAN), Moscow, Russia aut NATIONALLICENCE 773 0- Atomic Energy Springer US; http://www.springer-ny.com 118/4(2015-08-01), 261-264 1063-4258 118:4<261 2015 118 10512