THERMODYNAMIC CHARACTERISTICS OF THE REDUCTION OF URANIUM OXIDES AND OF URANYL FLUORIDES BY CETAIN REDUCING AGENTS

Journal Article · Fri Jun 01 04:00:00 EDT 1962 · Atomnaya Energ.

OSTI ID:4818513

Galkin, N P; Veryatin, U D; Karpov, V I; Braverman, I B; Fedoseev, I V

In view of the importance of UO/sub 2/, used directly for fabricating fuel elements and for preparing UF/sub 4/, thermodynamic calculations were carried out on the reduction of the higher U oxides and of uranyl fluoride by NH/ sub 3/, H/sub 2/, and CO. The isobaric-isothermal potential of the reduction reactions DELTA Z/sub T/ were calculated in the temperature range from 373 to 1173 deg K, using data given by V. G. Glasov and V. N. Shalaginov (Zhur. Priklad, Khim., 34: 20(1961) No. 1). Results indicate that UO3 is more easily reduced than U3OB. The DELTA Z/sub T/ potential of NH3/sub 3/ was found to be the highest among the reducing agents examined. The reducing ability of CO was found to decrease with increasing temperature, probably because of a shift in the 2CO + O/sub 2/ in equilibrium 2CO/sub 2/ reaction. UO/sub 2/F/sub 2/ cannot be reduced by CO but both H/sub 2/ and NH/sub 3/ reduce it easily. (TTT)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-024187
• OSTI ID: 4818513
• Journal Information: Atomnaya Energ., Journal Name: Atomnaya Energ. Vol. Vol: 12
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

CARBON OXIDES
EQUATIONS
FABRICATION
FUEL ELEMENTS
HIGH TEMPERATURE
HYDROGEN
METALS, CERAMICS, AND OTHER MATERIALS
NITROGEN HYDRIDES
NUMERICALS
PREPARATION
REDUCTION
THERMODYNAMICS
URANIUM FLUORIDES
URANIUM OXIDES