Electrochemical oxidation of berkelium in two-phase systems. I. Stability of Bk(IV) in the system HNO/sub 3/-D2EHPA

Journal Article · · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:6549572

Yakovlev, N G; Kosyakov, V N

Autoreduction of traces of Bk(IV) in the two-phase system D2EHPA (decane)-HNO/sub 3/ has been studied under extraction equilibrium conditions. Electrochemical oxidation has been used in combination with simultaneous extraction for obtaining Bk(IV). It has been proved that the Bk(IV) reduction kinetics can be described by a first-order equation with respect to the Bk(IV) concentration. The dependence of the effective reduction constants on the concentration of D2EHPA (0.001-0.1 M) and HNO/sub 3/ (1-10 M) have been studied. The mechanism of the reduction process has been proposed. It has been shown that Bk(IV) reduction occurs primarily in the aqueous phase and is effected by the extractant dissolved in the aqueous phase.

• OSTI ID: 6549572
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 25:4; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400400* -- Electrochemistry
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDES
BERKELIUM
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
KINETICS
METALS
NITRIC ACID
NUMERICAL DATA
OXIDATION
PHOSPHORIC ACID
REACTION KINETICS
REDUCTION
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS