TEMPERATURE EFFECTS ON URANYL STATE IN NITRIC ACID SOLUTIONS

Journal Article · Sun Dec 31 23:00:00 EST 1961 · Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.)

OSTI ID:4698143

Pozharskii, B G

The dependence of uranyl absorption spectra on the nitric acid concentration at various temperatures was studied in order to determine the complexing of uranyl with nitrate ions as a function of temperature. A rise in temperature at nitric acid concentration up to 4 N increases the complex formation with nitrate ions. An increase in temperature at 6 N nitric acid does not affect the complexing. It was found that uranyl ions in aqueous solutions have a structure STAU(OH)/sub4/!/sup 2+/ in addition to the (UO/sub 2/(H/sup 2/O)/ sub 2/! /sup 2+/. The neptunyl, plutonyl, and americyl ions were also constructed. The OH groups form plane covalent complexes with Me(VI) in the center by means of f/sup 3/d-hybrid bonds. The stability of aqueous solutions drops from uranyl to americyl due to the increased number of bare f-electrons. (R.V.J.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-020116
• OSTI ID: 4698143
• Journal Information: Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.), Journal Name: Radiokhimiya (U.S.S.R.) For English translation see Sov. Radiochem. (Engl. Transl.) Vol. Vol: 4; ISSN RADKA
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ABSORPTION
AMERICIUM COMPLEXES
CHEMISTRY
EFFICIENCY
NEPTUNIUM COMPLEXES
NITRIC ACID
PLUTONIUM COMPLEXES
SOLUTIONS
SPECTRA
STABILITY
TEMPERATURE
URANIUM COMPLEXES
URANYL NITRATES
WATER