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Author DeMarco, R. E. ♦ Mendel, M. G.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CHEMISTRY ♦ ADSORPTION ♦ HYDROGEN ♦ REDUCTION ♦ SURFACES ♦ URANIUM TRIOXIDE
Abstract The hydrogen reduction of high surface area, x-ray amorphous, UO/sub 3/ was studied at temperatures of 300 to 400 deg C and at hydrogen partial pressures of 0.25 to 1 atmos. The reduction was found to consist of two consecutive steps associated with the reactions: UO/sub 3/ + H/sub 3/ -- UO/sub 2.56/ and UO/sub 2.56/ + H/sub 2/ -- UO/sub 2/. The linear weight loss-reaction time curves indicated that both reactions are primarily controlled by adsorption of hydrogen on the product oxide surface. Activation energies of 27 and 39 kcal/mole were calculated for the reduction of UO/sub 3/ and of UO/sub 2.56/. (auth)
ISSN 00223654
Educational Use Research
Learning Resource Type Article
Publisher Date 1960-01-01
Publisher Department National Lead Co. of Ohio, Cincinnati
Journal Journal of Physical Chemistry
Volume Number 64
Organization National Lead Co. of Ohio, Cincinnati


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