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State of oxygen on metal surfaces and catalytic activity for the oxidation of carbon monoxide

Journal Article · · Kinet. Catal. (Engl. Transl.); (United States)
OSTI ID:6464020
The dependence of the heat of adsorption of oxygen on the heat of formation of oxides of the corresponding metals is reported. For metals with a heat of adsorption exceeding 220 kJ/mole it is shown that a reconstructive type of oxygen adsorption (formation of surface oxides) predominates. On the other hand, nonreconstructive oxygen adsorption is observed on the platinum metals and silver at room temperature. On ruthenium, nickel, and cobalt under certain conditions a nonreconstructively adsorbed form of oxygen exists which is active with respect to CO oxidation. The transition of this type of oxygen absorption into the surface oxide state causes a variability in the activity of these metals for the oxidation of carbon monoxide. 57 references, 3 figures, 1 table.
Research Organization:
Inst. of Catalysis, Novosibirsk, USSR
OSTI ID:
6464020
Journal Information:
Kinet. Catal. (Engl. Transl.); (United States), Journal Name: Kinet. Catal. (Engl. Transl.); (United States) Vol. 24:5; ISSN KICAA
Country of Publication:
United States
Language:
English