THE UTILIZATION OF SODIUM HYPOPHOSPHATE FOR THE SEPARATION OF THORIUM FROM CERIUM

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Tr. Leningr. Tekhnol. Inst. im. Lensoveta

OSTI ID:4718721

Mikhailov, A A; Tekster, E N

The distribution of Ce between solid and liquid phases was investigated with the help of Ce/sup 144/, in reactions where a 1:5 mixture of Th and Ce was precipitated from sulfuric and hydrochloric acid solutions by Na/sub 2/H/sub 2/P/ sub 2/O/sub 6/, used in an excess of 150%. Ce/sup 4+/ was reduced to Ce/sup 3+/ by H/sub 2/O/sub 2/ before and after precipitation by the hypophosphate. It was established that, if Ce/sup 4+/ is reduced before the addition of the precipitant, practically all Ce remains in sulfuric acid solution, for concentrations of H/sub 2/SO/sub 4/ ranging from 1.5 to 3.5 N, and in hydrochloric acid solution, for concentrations of HCl between 2.5 and 4 N. Proceeding from the knowledge of solubility of ThP/sub 2/O/sub 6/ in acids, it was assumed that practically all the Th is in the solid phase. Methods were worked out for the preparation of pure Na/sub 2/H/sub 2/P/sub 2/O/sub 6/ from red P. (Referativnyy zhurnal, Khimiya, No. 6, 1962).

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-021701
• OSTI ID: 4718721
• Journal Information: Tr. Leningr. Tekhnol. Inst. im. Lensoveta, Journal Name: Tr. Leningr. Tekhnol. Inst. im. Lensoveta Vol. Vol: No. 55
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALLOTROPY
CERIUM
CERIUM 144
CERIUM COMPOUNDS
CHEMISTRY
COLOR
DISTRIBUTION
HYDROCHLORIC ACID
HYDROGEN PEROXIDES
IMPURITIES
LIQUIDS
PHOSPHORUS
PRECIPITATION
PREPARATION
REDUCTION
SEPARATION PROCESSES
SODIUM PHOSPHATES
SOLIDS
SOLUBILITY
SOLUTIONS
SULFURIC ACID
THORIUM
THORIUM PHOSPHATES
TRACER TECHNIQUES
USES