Solubility and kinetics of formation of uranyl carbamidooxalate
Journal Article
·
· Sov. Radiochem. (Engl. Transl.); (United States)
OSTI ID:6821983
Experimental data are presented for the solubility of two modifications (..cap alpha.. and ..beta..) of uranyl carbamidooxalate UO/sub 2/C/sub 2/O/sub 4/.CO(NH/sub 2/)/sub 2/ in aqueous 0.1 mole/liter sodium perchlorate solution at pH 3-4.5, temperature 25/sup 0/C, at different concentrations of urea. It was established that the solubility of the unstable modification (..beta..-form) was greater than the solubility of the stable modification (..cap alpha..-form) by a factor of 1.4. From the results obtained the stability constants were evaluated. The kinetics of the formation of uranyl carbamidooxalate in relation to supersaturation of solutions of 1 mole/liter nitric acid at concentrations of 0.25-1.5 mole/liter urea were studied. It was shown that the boundary of the metastable region of supersaturated solutions in the studied system corresponded to a relative supersaturation of the order 3-4.
- OSTI ID:
- 6821983
- Journal Information:
- Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 25:1; ISSN SVRDA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
CHEMICAL REACTION KINETICS
CHLORINE COMPOUNDS
DATA
EXPERIMENTAL DATA
HALOGEN COMPOUNDS
INFORMATION
KINETICS
NUMERICAL DATA
OXYGEN COMPOUNDS
PERCHLORATES
PH VALUE
REACTION KINETICS
SODIUM COMPOUNDS
SODIUM PERCHLORATES
SOLUBILITY
STABILITY
SYNTHESIS
URANIUM COMPOUNDS
URANYL COMPOUNDS
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ALKALI METAL COMPOUNDS
CHEMICAL REACTION KINETICS
CHLORINE COMPOUNDS
DATA
EXPERIMENTAL DATA
HALOGEN COMPOUNDS
INFORMATION
KINETICS
NUMERICAL DATA
OXYGEN COMPOUNDS
PERCHLORATES
PH VALUE
REACTION KINETICS
SODIUM COMPOUNDS
SODIUM PERCHLORATES
SOLUBILITY
STABILITY
SYNTHESIS
URANIUM COMPOUNDS
URANYL COMPOUNDS