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Reaction of ozone with uranium(IV) oxalate in water
- Source :
- Radiochemistry. 59:233-239
- Publication Year :
- 2017
- Publisher :
- Pleiades Publishing Ltd, 2017.
-
Abstract
- Decomposition of aqueous suspensions of uranium(IV) oxalate under the action of an ozone–oxygen mixture was studied. The process occurs in two steps. In the first step, the U(IV) oxidation with the formation of oxalic acid uranyl solutions prevails. The second step involves decomposition of oxalate ions and hydrolysis of uranyl ions. An increase in temperature accelerates the transformation of uranium(IV) oxalate into uranium(VI) hydroxide compounds. In solutions containing KBr or UO2Br2, the following reaction occurs: O3 + Br– → O2 + BrO–. The arising hypobromite ions and hypobromous acid oxidize uranium(IV) oxalate extremely efficiently. The possible mechanism of ozonation of aqueous uranium(IV) oxalate suspensions is discussed.
- Subjects :
- Aqueous solution
010405 organic chemistry
Oxalic acid
Inorganic chemistry
chemistry.chemical_element
Uranium
010402 general chemistry
Uranyl
01 natural sciences
Oxalate
0104 chemical sciences
chemistry.chemical_compound
chemistry
Hypobromous acid
Hydroxide
Physical and Theoretical Chemistry
Hypobromite
Nuclear chemistry
Subjects
Details
- ISSN :
- 16083288 and 10663622
- Volume :
- 59
- Database :
- OpenAIRE
- Journal :
- Radiochemistry
- Accession number :
- edsair.doi...........0063551cb80cc05962e57ceb2487f81b