Abstract
The reaction of CO oxidation on thin metal films of platinum, rhodium, and their alloy and on a heterophase bimetallic Pt/Rh surface that consisted of platinum particles of size 10–20 nm on the surface of rhodium was studied in the region of low reactant pressures (lower than 2 × 10−5 mbar). At low temperatures (T < 200°C), the activity of samples increased in the order Rh > Pt/Rh > Pt-Rh alloy > Pt. Above 200°C, the rate of reaction on the heterophase Pt/Rh surface was almost twice as high as the sum of the rates of reaction on the individual metals; this fact is indicative of a synergistic effect. The nature of this effect is considered.
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Original Russian Text © A.V. Kalinkin, A.V. Pashis, V.I. Bukhtiyarov, 2007, published in Kinetika i Kataliz, 2007, Vol. 48, No. 2, pp. 314–320.
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Kalinkin, A.V., Pashis, A.V. & Bukhtiyarov, V.I. Reaction of CO oxidation on platinum, rhodium, a platinum-rhodium alloy, and a heterophase bimetallic platinum/rhodium surface. Kinet Catal 48, 298–304 (2007). https://doi.org/10.1134/S0023158407020152
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DOI: https://doi.org/10.1134/S0023158407020152