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Low-temperature nonaqueous nitration of metallic uranium in the system TBP tetrachloroethylene-NO 2 is studied. Dissolution of U in a dipolar aprotic solvent (TBP, DMF, acetonitrile, nitromethane, DMSO, diethylformamide) proceeds with the formation of U(VI) compounds. The activation energy of the process is estimated at 48.2 kJ mol −1 , and the partial order of the reaction with respect to NO 2 is 1. The effects of the TBP concentration and water addition on the nitration are examined. In the system TBP-tetrachloroethylene, the nitration rate is maximal at a water content of 1.0–2.0 vol %.
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Buchikhin et al. (2006) studied this question.
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