Preferential Oxidation of CO in H2-Rich Gas at Low Temperatures over Au Nanoparticles Supported on Metal Oxides

We investigated Au catalysts supported on TiO 2 , Fe 2 O 3 , and ZnO for their preferential oxidation of CO in a H 2 -rich atmosphere. Both full conversion and selectivity were achieved over Au/Fe 2 O 3 and Au/ZnO around room temperature, but at higher temperatures the CO conversion was suppressed d...

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Veröffentlicht in:	Catalysis letters 2008-08, Vol.124 (1-2), p.68-73
Hauptverfasser:	Imai, Hiroyuki, Daté, Masakazu, Tsubota, Susumu
Format:	Artikel
Sprache:	eng
Schlagworte:	Catalysis Chemistry Chemistry and Materials Science Colloidal state and disperse state Conversion Exact sciences and technology General and physical chemistry Gold Industrial Chemistry/Chemical Engineering Low temperature Nanoparticles Organometallic Chemistry Oxidation Physical and chemical studies. Granulometry. Electrokinetic phenomena Physical Chemistry Selectivity Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Titanium dioxide Zinc oxide
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Beschreibung
Zusammenfassung:	We investigated Au catalysts supported on TiO 2 , Fe 2 O 3 , and ZnO for their preferential oxidation of CO in a H 2 -rich atmosphere. Both full conversion and selectivity were achieved over Au/Fe 2 O 3 and Au/ZnO around room temperature, but at higher temperatures the CO conversion was suppressed due to competition between CO and H 2 .
ISSN:	1011-372X 1572-879X
DOI:	10.1007/s10562-008-9501-x