Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide

doi:10.1016/0021-9517(89)90034-1

Journal of Catalysis

Volume 115, Issue 2, February 1989, Pages 301-309

https://doi.org/10.1016/0021-9517(89)90034-1 Get rights and content

Abstract

Novel gold catalysts were prepared by coprecipitation from an aqueous solution of HAuCl₄ 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, $Au α- Fe_{2} O_{3}$ , $Au Co_{3} O_{4}$ , and $Au NiO$ were highly active for H₂ 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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¹: Present address: NEC Corp., Miyazaki 4, Miyamae, Kawasaki 213, Japan.

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Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide

Abstract

Int. J. Hydrogen Energy

Int. J. Hydrogen Energy

Int. J. Hydrogen Energy

Int. J. Hydrogen Energy

J. Colloid Interface Sci.

J. Catal.

J. Catal.

J. Catal.

J. Catal.

J. Catal.

J. Catal.

J. Catal.

Gold Bull.