Реферат: The oxidn. of H2 and the adsorption of reaction components on Ir, Pt, Pd, and Rh surfaces were studied. Three forms of O were distinguished: (1) O2 which is inert with respect to H2, (2) dissociative (highly reactive O)​, and (3) surface oxides (less reactive O)​. The dissocd. O reacted with H at 120-​230 K. The most active surfaces were stepped faces, the least active were rough faces. The presence of a sharp reaction boundary and Oads islands indicates the occurrence of reaction Hads + Oads. At 150-​300 K and pressures of ∼10-​7 torr in steady-​state conditions, Rh had the lowest activity. Depending on the PH2 to PO2 ratio, 2 stationary regions of the reaction existed. A simple model is proposed which describes the catalytic action of metals in terms of adsorption.

Библиографическая ссылка: Gorodetskii V.V. , Sobyanin V.A. , Cholach A.R. , Smirnov M.Y.
Low-Temperature Oxidation of Hydrogen on Iridium, Platinum, Palladium and Rhodium Surfaces
В сборнике 8th International Congress on Catalysis, Berlin, 2-6 July 1984: proceedings [in 6 v.]. – Verlag Chemie., 1984. – C.323-334. CAPlusCA

Идентификаторы БД:

Chemical Abstracts:	1986:540593
Chemical Abstracts (print):	105:140593

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