rapid separation of higher actinide elements by cocrystallization using lower oxidation states

Journal Article · Tue Jul 01 04:00:00 EDT 1986 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:7066614

Kamenskaya, A N; Konovalova, N A; Kulyukhin, S A; Mikheev, N B

An express method has been developed for the separation of higher actinides based on their cocrystallization with alkali metal halides. By carrying out reduction with the dichlorides of europium, ytterbium, and samarium it was possible to separate mendelevium from fermium, einsteinium, and californium, fermium from einsteinium and californium, and californium with einsteinium from trivalent actinides in turn. A practically complete purification from lanthanides was achieved in this way. Separation was carried in aqueous ethanol solutions by cocrystallization with NaCl resulting from salting out with ethanol. The purification coefficient of actinides from accompanying elements was 10/sup 3/ to 10/sup 4/. The yield on separation was about 90%. The duration of the separation process was 3-5 min.

• OSTI ID: 7066614
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 27:5; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTINIDES
ALKALI METAL COMPOUNDS
CALIFORNIUM
CHEMICAL REACTION YIELD
CHLORIDES
CHLORINE COMPOUNDS
COPRECIPITATION
CRYSTALLIZATION
EINSTEINIUM
ELEMENTS
EUROPIUM CHLORIDES
EUROPIUM COMPOUNDS
EXTRACTION
FERMIUM
HALIDES
HALOGEN COMPOUNDS
MENDELEVIUM
METALS
PHASE TRANSFORMATIONS
PRECIPITATION
PURIFICATION
RARE EARTH COMPOUNDS
RARE EARTHS
SALTING-OUT AGENTS
SALTS
SAMARIUM CHLORIDES
SAMARIUM COMPOUNDS
SEPARATION PROCESSES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SOLVENT EXTRACTION
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
VALENCE
YIELDS
YTTERBIUM CHLORIDES
YTTERBIUM COMPOUNDS