1969 Volume 42 Issue 12 Pages 3447-3450
The change in NiO catalytic activity upon the variation in the irradiation of γ-rays in the presence of O2 gas was studied. Activities were determined for the reaction of CO with NiO and for the oxidation reaction of CO on NiO. The results showed a decrease in the CO-NiO reaction rate with an increase in the irradiation of NiO, particularly in the absence of oxygen; if the irradiation was more than 7×107R, the reaction rate increased as both the irradiation in the presence of oxygen and the oxygen partial pressure increased. The activity change in NiO was explained by assuming the migration of the specially-active oxygen into the oxide bulk by means of the irradiation of γ-rays.
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