Published August 1985
| Version v1
Journal article
Studies on the photochemistry of uranyl ion : Pt. 3
- 1. Academia Sinica, Beijing, BJ (China). Inst. of Atomic Energy
Description
The photochemical reduction of uranyl ion by formic acid is investigated using an argon ion laser at wavelength 4880 A. The effects of concentration of the formic acid, formate, nitric acid, nitrate, uranyl ion and of temperature on quantum yield PHI of U(IV) formed are studied. Experimental results indicate that U(VI) can be reduced photochemically to U(V), which disproportionates to U(IV) and U(VI). PHI depends mainly on the degree of complex formation of uranyl formate in solution. PHI increases with the increase of α. PHI reaches 0.5 when α is close to 1. The rate of U(IV) formed is proportional to [HCOO-]sup(1.08) at low concentration of formate and to [UO22+]sup(1.01) at low concentration of uranyl ion respectively
Additional details
Additional titles
- Subtitle (English)
- Photochemical reduction of U(VI) in UO_2"2"+-HCOOH-HNO_3 system with an argon ion laser
Publishing Information
- Journal Title
- J. Nucl. Radiochem.
- Journal Volume
- 7
- Journal Issue
- 3
- Series
- J. Nucl. Radiochem.
- Journal Page Range
- 141-146, 154
- ISSN
- 0253-9950
- CODEN
- HHHHD
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 17061543
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- CATIONS; FORMIC ACID; LASER RADIATION; PHOTOCHEMISTRY; QUANTITY RATIO; REACTION KINETICS; REDUCTION; STABILITY; TEMPERATURE DEPENDENCE; URANYL COMPLEXES; URANYL COMPOUNDS
- Descriptors DEC
- ACTINIDE COMPLEXES; ACTINIDE COMPOUNDS; CARBOXYLIC ACIDS; CHARGED PARTICLES; CHEMICAL REACTIONS; CHEMISTRY; COMPLEXES; ELECTROMAGNETIC RADIATION; IONS; KINETICS; MONOCARBOXYLIC ACIDS; ORGANIC ACIDS; ORGANIC COMPOUNDS; RADIATIONS; URANIUM COMPLEXES; URANIUM COMPOUNDS