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DECOMPOSITION OF URANYL FLUORIDE BETWEEN 700 AND 950 C

Journal Article · · Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol.
DOI:https://doi.org/10.1149/1.2427685· OSTI ID:4170359
The thermal decomposition of uranyl fluoride was stadied by a thermogravimetric technique between 700 and 950 deg C. At temperatures below 900 deg C, the main decomposition reaction is 3 UO/sub 2/F/sub 2/ yields 2/3 U/sub 3/O/sub 8/ + UF/sub 6/ + 1/3 O/sub 2/. In an atmosphere of dry helium, the rate of decomposition was first order with respect to uranyl fluoride. The rate constants, determined with a constant helium flow rate of 270 cc (STP)/min, were k = 3.72 x l0/sup 11/ exp (-7l,800/RT). Sublimation of uranyl fluoride, as a parallel, first order process, occurred at temperatures above 825 deg C. (auth)
Research Organization:
Oak Ridge National Lab., Tenn.
Sponsoring Organization:
USDOE
NSA Number:
NSA-14-012636
OSTI ID:
4170359
Journal Information:
Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol., Journal Name: Journal of the Electrochemical Society (U.S.) Absorbed Electrochem. Technol. Vol. Vol: 107; ISSN JESOA
Country of Publication:
Country unknown/Code not available
Language:
English

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