THE EXTRACTION OF THE SALICYLATES OF SCANDIUM, YTTRIUM, CERIUM, LANTHANUM, URANIUM, AND THORIUM

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Nauch. Doklady Vysshei Shkoly. Khim. i Khim. Tekhnol.

OSTI ID:4201930

Sudarikov, B N; Zaytsev, V A; Puchkov, Yu G

The work is an attempt to attain ihe separation of the elements meniioned by means of the extraction taking place with complex formation. The extraction was controlled by the radioaciive isotopes Se/sup 46/ Y/sup 90/, Ce/ sup 141/, La/sup 140/, and Th/sup 234/. Salicylic acid was chosen because it easily forms complex compounds with metals and is readily soluble in organic solvents. Isoamyl alcohol was used as a solvent. The distribution coefficient alpha of salicylates between the anueous and organic phase was checked in dependence on the pH of the solution. The following substances were quantitatively extracted: scandium salicylate at pH values between lanthanum salicylate at pH values higher than 4.5: cerium salicylate at pH values higher ihan 5.0 and thorium salicylate at pH values higher than 3.0. Uranium salicylate was extracted between pH 2.5 to 5.5, with higher pH values; however, a crystalline precipitate is formed which was analyzed as NH/sub 4/ UO/sub 2/(HSal/ sup -/)/sub 3/.4H/sub 2/O. A straight line with the tangent of the inclination angle = 2 resulted from the coordinate system lg( alpha )--lg(H/sup +/) with a constant salicylic acid concentration and from the system lg( alpha )--lg(HSal)/ sub org/ at a constant pH = 2.2. Thus 2 H/sup +/ ions are emitted in the reaction with salicylic acid. (TCO)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-14-000264
• OSTI ID: 4201930
• Journal Information: Nauch. Doklady Vysshei Shkoly. Khim. i Khim. Tekhnol., Journal Name: Nauch. Doklady Vysshei Shkoly. Khim. i Khim. Tekhnol. Vol. Vol: No. 1
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACIDITY
ALCOHOLS
AMMONIUM COMPOUNDS
CERIUM
CERIUM 141
CHEMISTRY
COMPLEXES
DISTRIBUTION
LANTHANUM
LANTHANUM 140
METALS
ORGANIC COMPOUNDS
PRECIPITATION
RADIOISOTOPES
SALICYLIC ACID
SALTS
SCANDIUM
SCANDIUM 46
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS
THORIUM
THORIUM 234
URANIUM
URANYL COMPOUNDS
WATER
YTTRIUM
YTTRIUM 90