THE FLUORINATION OF URANIUM SULFATE WITH CHLORINE TRIFLUORIDE

Journal Article · Mon Jul 01 00:00:00 EDT 1963 · At. Energ. (USSR)

OSTI ID:4634248

Nikolaev, N S; Shishkov, Yu D

A 10-g sample of U(SO/sub 4/)/sub 2/ was fluorirated with gaseous ClF/ sub 3/ for 1 hour in a horizontal nickel reactor at temperatures of 18, 50, 100, 150, 200, 250, and 300 deg C. The composition of the solid residue was determined by chemical and x-ray analyses. The UF/sub 6/ yield was determined by freezing out the volatile components in a copper or quartz trap. The data show that U(SO/ sub 4/)/sub 2/ is converted to UO/sub 2/SO/sub 4/ with incre asing temperature. The content of UO/sub 2/F/sub 2/ in the solid residue also increases with the temperature. The yield of UF/sub 6/ is 75.60% at 200 deg , 81.30% at 250 deg , and 90.74% at 300 deg C. Uranium hexafluoride is probably formed as a result of the fluorination of UO/sub 2/F/sub 2/. The fluorination of U(SO/sub 4/)/sub 2/ by Cl F/sub 3/ can be represented as follows: (a) 3U(SO/sub 4/)/sub 2//sup +/ 2ClF/sub 3/ yields 3UO/sub 2/SO/sub 4/ + 3SO/sub 2/F/sub 2/ + Cl/sub 2/; (b) 3UO/ sub 2/SO/sub 4/ + 8ClF/sub 3/ yields 3UO/sub 2/F/sub 2/ + 3SO/sub 2/F/sub 2/ + 4C1/sub 2/ + 60F/sub 2/; (c) 3UO/sub 2/F/sub 2/ + 8ClF/sub 3/ yields 3UF/sub 6/ + 4Cl/sub 2/ + 60F/sub 2/. The over-all reaction is: 3U(SO/sub 4/)/sub 2/ + 18ClF/sub 3/ yields 3UF/sub 6/ + 6SO/sub 2/F/sub 2/ + 9Cl/sub 2/ + 6OF/sub 2/. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-039034
• OSTI ID: 4634248
• Journal Information: At. Energ. (USSR), Vol. Vol: 15; Other Information: Orig. Receipt Date: 31-DEC-63
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

CHEMISTRY
CHEMICAL REACTIONS
CHLORINE
CHLORINE FLUORIDES
COMPOUNDS
COPPER
EFFICIENCY
EQUATIONS
FLUORIDES
FLUORINATION
FLUORINE OXIDES
GASES
LIQUEFYING
NICKEL
ORGANIC FLUORINE COMPOUNDS
ORGANIC SULFUR COMPOUNDS
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUARTZ
REACTION KINETICS
RESIDUES
SOLIDIFICATION
SOLIDS
SULFATES
SULFUR COMPOUNDS
TEMPERATURE
TRAPS
URANIUM HEXAFLUORIDE
URANIUM OXIDES
URANIUM SULFATES
URANYL COMPOUNDS
X RADIATION