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The preferential oxidation of CO (CO-PROX) under excess hydrogen over Au/MOx/Al2O3 (M=La, Ce, and Mg) catalysts was investigated. All catalysts were prepared by a deposition-precipitation method with urea and characterized with inductively coupled plasma-atomic emission spectroscopy, N2 physisorption, temperature-programmed reduction, X-ray diffraction, transmission electron microscopy, in-situ diffuse...
Recent studies have revealed that supported gold catalysts exhibit comparable or superior catalytic performance relative to platinum group metals, especially at low temperatures, in the preferential oxidation of CO under excess H2 (CO-PROX). Complete conversion of CO with good selectivity of O2 for CO2 and highly stable catalyst performance in the presence of CO2 and H2O are considered to be essential...
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