The effect of steam and hydrogen in promoting the oxidation of carbon monoxide over a platinum on alumina catalyst

Steam‐ and hydrogen‐induced effects on carbon monoxide oxidation at temperatures below 200°C were studied over an alumina‐supported Pt catalyst. These studies were complemented by measurements of rate expressions and IR spectroscopy. CO oxidation activity over alumina‐supported Pt, Pd and Rh catalys...

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Veröffentlicht in:	Journal of chemical technology and biotechnology (1986) 1991, Vol.52 (3), p.415-424
Hauptverfasser:	Muraki, Hideaki, Matunaga, Shin-Ichi, Shinjoh, Hirofumi, Wainwright, Mark S., Trimm, David L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences carbon monoxide oxidation Chemical industry and chemicals effect of hydrogen and water on catalysed oxidation of carbon monoxide Exact sciences and technology Industrial chemicals Inorganic industry oxidation Platinum catalysts promotion by hydrogen and water
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Zusammenfassung:	Steam‐ and hydrogen‐induced effects on carbon monoxide oxidation at temperatures below 200°C were studied over an alumina‐supported Pt catalyst. These studies were complemented by measurements of rate expressions and IR spectroscopy. CO oxidation activity over alumina‐supported Pt, Pd and Rh catalysts was found to be strongly promoted by the presence of steam and H 2 in the feed gas. The promotion effect decreased in the order Pi>Pd> Rh. The water‐gas shift reaction did not occur under these experimental conditions. The steam and H 2 enhancement effects are attributed to the weakening of self‐poisoning by CO.
ISSN:	0268-2575 1097-4660
DOI:	10.1002/jctb.280520313