caa a22 4500 606151273 CHVBK 20210128100543.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10512-015-9940-6 doi (NATIONALLICENCE)springer-10.1007/s10512-015-9940-6 Release of Nitrogen Oxides into the Gas Phase Accompanying the Dissolution of Uranium Nitride in Nitric Acid [Elektronische Daten] [O. Ustinov, A. Shadrin, Yu. Voskresenskaya, S. Kulyukhin, A. Bessonov] The release of nitrogen oxides (N2O, NO, NO2) accompanying the dissolution of UN in HNO3 with concentration 3-16 mol/liter and the ratio S:L = 1:7.5 and in 7.2 mol/liter HNO3 with S:L varying from 3 to 30 in atmospheric air or argon is studied. In the indicated HNO3 concentration range N2O is formed mainly as a result of the oxidation of UN and secondarily as a result of the reduction of HNO3. The presence or absence of oxygen in the atmosphere has no effect on the amount of N2O formed. The formation of NO2 is due to the reduction of HNO3. The presence of oxygen increases the amount of NO2 formed as a result of the oxidation of NO. The amount of nitrogen monoxide NO released into atmospheric air is higher than the amount released into an argon atmosphere. The amount of NO formed increases with increasing nitric acid concentration. The release of nitrogen oxides from UN as well as from nitric acid results in considerable dilution of nitride nitrogen, which casts doubt on the possibility of recycling 15N in the case where U15N is used as fuel. Springer Science+Business Media New York, 2015 Ustinov O. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut Shadrin A. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut Voskresenskaya Yu Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut Kulyukhin S. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IFKhE RAN), Moscow, Russia aut Bessonov A. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IFKhE RAN), Moscow, Russia aut Atomic Energy Springer US; http://www.springer-ny.com 117/6(2015-04-01), 409-414 1063-4258 117:6<409 2015 117 10512 https://doi.org/10.1007/s10512-015-9940-6 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/s10512-015-9940-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ustinov O. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut NATIONALLICENCE 700 1- Shadrin A. Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut NATIONALLICENCE 700 1- Voskresenskaya Yu Bochvar All-Russia Research Institute for Inorganic Materials (VNIINM), Moscow, Russia aut NATIONALLICENCE 700 1- Kulyukhin S. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences (IFKhE RAN), Moscow, Russia aut NATIONALLICENCE 700 1- Bessonov A. Frumkin 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 117/6(2015-04-01), 409-414 1063-4258 117:6<409 2015 117 10512