Abstract
M/Al2O3-CeO2 (M = Pt-Ru, Ru, and Pt) catalysts were prepared using an impregnation method. Their catalytic performance in catalytic wet air oxidation (CWAO) of methylamine was compared. The catalysts were characterized using temperature-programmed reduction, X-ray photoelectron spectroscopy, X-ray diffraction, transmission electron microscopy, N2 adsorption, and CO chemisorption. The experimental results indicated that the dispersion of active species in the Pt-Ru/Al2O3-CeO2 catalyst was greatly improved by the introduction of Pt; therefore, its catalytic performance was significantly enhanced. Temperature-dependent activity showed hysteresis over the catalysts, indicating that CWAO of methylamine followed a chemisorption mechanism.
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