Catalytic performance and structural characterization of ferric oxide and its composite oxides supported gold catalysts for low-temperature CO oxidation |
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| Authors: | HAO Zhengping AN Lidun WANG HongIl |
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| Affiliation: | 1. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2. Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
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| Abstract: | The preparation and catalytic activity of ferric oxide and its composite oxides supported gold catalysts for low-temperature CO oxidation were investigated detailedly, and characterized extensively by XRD, XPS, TPR, EC and XAFS techniques. It was found that containing highly dispersed Au of partially oxidized state, these nano-structured oxides supported Au/Fe2O3 and Au/NiFe2O4 catalysts had higher low-temperature activities. The possible catalytic active center is the gold of partially oxidized state (Auζ+). |
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| Keywords: | gold catalyst possible catalytic active center low-temperature CO oxidation. |
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