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OXIDATION OF URANIUM(IV) BY OXYGEN AND NITROUS ACID

A. Laird Slade

Abstract

The oxidation of uranium(IV) by oxygen and nitrous acid was studied in both 30% TBP-""Ultrasene"" and in aqueous solutions. Emphasis was placed on reactions between uranium(IV) and nitrous acid. Distribution coefficients were measured for uranium(IV) and uranium(VI) in the nitric acid-30% TBP system. The use of uranium(IV) as a reductant for plutonium in the Purex process is discussed. (auth)

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Key concepts: PUREX, Uranium, Nitrous acid, Nitric acid, Plutonium, Chemistry, Radiochemistry, Oxygen