Low-Temperature Oxidation of Hydrogen on Iridium, Platinum, Palladium and Rhodium Surfaces Discussion
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8th International Congress on Catalysis 02-06 Jul 1984 , Berlin |
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| Source | 8th International Congress on Catalysis, Berlin, 2-6 July 1984: proceedings [in 6 v.] Compilation, Verlag Chemie. Weinheim; Deerfield Beach.1984. |
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| Output data | Year: 1984, Volume: 3, Pages: 323-334 Pages count : 12 | ||
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Abstract:
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.
Cite:
Gorodetskii V.V.
, Sobyanin V.A.
, Cholach A.R.
, Smirnov M.Y.
Low-Temperature Oxidation of Hydrogen on Iridium, Platinum, Palladium and Rhodium Surfaces
In compilation 8th International Congress on Catalysis, Berlin, 2-6 July 1984: proceedings [in 6 v.]. – Verlag Chemie., 1984. – C.323-334. ANCAN
Low-Temperature Oxidation of Hydrogen on Iridium, Platinum, Palladium and Rhodium Surfaces
In compilation 8th International Congress on Catalysis, Berlin, 2-6 July 1984: proceedings [in 6 v.]. – Verlag Chemie., 1984. – C.323-334. ANCAN
Identifiers:
| Chemical Abstracts: | 1986:540593 |
| Chemical Abstracts (print): | 105:140593 |
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