Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide
摘要：
Novel gold catalysts were prepared by coprecipitation from an aqueous solution of HAuCl 4 and the nitrates of various transition metals. Calcination of the coprecipitates in air at 400 °C produced ultrafine gold particles smaller than 10 nm which were uniformly dispersed on the transition metal oxides. Among them, Au α- Fe 2O 3, Au Co 3O 4, and Au NiO were highly active for H 2 and CO oxidation, showing markedly enhanced catalytic activities due to the combined effect of gold and the transition metal oxides. For the oxidation of CO they were active even at a temperature as low as 70 °C.
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DOI：
10.1016/0021-9517(89)90034-1
被引量：
年份：
1989
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2011
被引量：418
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