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- W1971767429 abstract "Au/MgO/Al2O3 is able to oxidize CO selectively in hydrogen-rich gases (∼70 vol.%) at the temperatures relevant to hydrogen fuel cell applications (70–100 °C). The presence of MgO enables the preparation of small, stable Au particles on γ-Al2O3 with high surface area and, in this way, improves both low-temperature CO and H2 oxidation by O2 compared to Au/Al2O3. Addition of MnOx and FeOx to Au/MgO/Al2O3 further enhances low-temperature CO oxidation with improved CO2 selectivity. The increase in CO oxidation activity is attributed to the implementation of new routes for supplying active oxygen, e.g., via lattice oxygen. The better CO2 selectivity also probably results from suppression of H2 oxidation at low temperatures. The results support a model in which CO is adsorbed onto metallic Au or at the Au/MOx perimeter interface and reacts with oxygen also present at the Au/MOx perimeter interface. A focus on decreasing the H2 oxidation activity is recommended for further catalyst improvement." @default.
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- W1971767429 date "2002-02-01" @default.
- W1971767429 modified "2023-10-12" @default.
- W1971767429 title "Oxidation of CO over Au/MOx/Al2O3 multi-component catalysts in a hydrogen-rich environment" @default.
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- W1971767429 doi "https://doi.org/10.1016/s0920-5861(01)00486-2" @default.
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