Production and stability of tetra- and hexavalent americium in solutions of sodium carbonate

Journal Article · Fri Feb 28 23:00:00 EST 1986 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:5497757

Frenkel, V Y; Khizhnyak, P L; Lebedev, I A; Myasoedov, B F

This paper investigates the electrochemical oxidation of americium(III) in solutions of sodium carbonate. At pH = 10, as a result of oxidation, americium(IV) is obtained, while at pH 11, americium(IV) is obtained. A spectrophotometric investigation of the stability of tetra- and hexavalent americium at various temperatures showed that Am(VI) is reduced to Am(V) according to a first-order reaction, the activation energy of which is equal to 63.8 + or - 5.4 kJ/ mole, while Am(IV) disproportionates to form Am(III) and Am(V) and is reduced.

• OSTI ID: 5497757
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 27:4; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104 -- Spectral Procedures-- (-1987)
400105* -- Separation Procedures
400203 -- Isotope Exchange & Isotope Separation-- (-1987)
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTIVATION ENERGY
ALKALI METAL COMPOUNDS
ALPHA DECAY RADIOISOTOPES
ALPHA SPECTRA
AMERICIUM 243
AMERICIUM CARBONATES
AMERICIUM COMPOUNDS
AMERICIUM HYDROXIDES
AMERICIUM ISOTOPES
CARBON COMPOUNDS
CARBONATES
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
ELECTROLYSIS
ENERGY
GAMMA SPECTRA
HEAVY NUCLEI
HYDROGEN COMPOUNDS
HYDROXIDES
ISOTOPES
KINETICS
LYSIS
NUCLEI
ODD-EVEN NUCLEI
OXIDATION
OXYGEN COMPOUNDS
PH VALUE
PRODUCTION
RADIOISOTOPES
REACTION KINETICS
REDOX POTENTIAL
REDUCTION
SODIUM CARBONATES
SODIUM COMPOUNDS
SPECTRA
SPECTROPHOTOMETRY
TRANSPLUTONIUM COMPOUNDS
TRANSURANIUM COMPOUNDS
VALENCE
YEARS LIVING RADIOISOTOPES
YIELDS