Interaction of uranium oxides with dinitrogen tetroxide

Data on the interaction of nitrogen oxides in different oxidation states with dinitrogen tetroxide in the temperature range 273–1073 K and in the pressure range 0.1–10 MPa are surveyed. The mechanisms of the interaction of the dissociating N₂O₄⇄2NO₂⇄2NO + O₂ system, liquid N₂O₄, and N₂O₄ –organic solvent mixtures with uranium oxides are discussed as a function of the oxidation state of uranium, the specific surface and structure of the oxides, the state of aggregation of N₂O₄, the presence of impurities in the latter, and the presence of organic solvents. The behaviour of uranium oxides in relation to that of the other metal oxides is subjected to a comparative analysis.
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