Reminescences

Magnetite and Maghemite as Gold-Supports for Catalyzed CO Oxidation at Low Temperature

Goran Šmit ; Faculty of Education, J. J. Strossmayer University of Osijek, L. Jägera 9, 31 000 Osijek, Croatia

Abstract

A supported gold catalyst was prepared by the deposition-precipitation method from an aqueous solution of HAuCl₄ ⋅ 3H₂O on synthesized Fe₃O₄. Calcination at different temperatures caused transformations of Fe₃O₄ to γ-Fe₂O₃ and α-Fe₂O₃. CO oxidations over Au/Fe₃O₄ and Au/γ-Fe₂O₃ were superior compared to Au/α-Fe₂O₃.

Keywords

CO oxidation; supported gold catalysts; iron oxides; magnetite (Fe₃O₄); maghemite (γ -Fe₂O₃); haematite (α -Fe₂O₃)

Hrčak ID:

103178

URI

https://hrcak.srce.hr/103178

Publication date:

29.8.2003.

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