Citation:
Aiying Song, Gongxuan Lü. Study of catalytic activity and product selectivity of M/Al2O3-CeO2 (M=Pt-Ru, Ru, and Pt) in catalytic wet air oxidation of methylamine[J]. Chinese Journal of Catalysis,
;2014, 35(7): 1212-1223.
doi:
10.1016/S1872-2067(14)60091-7
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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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Keywords:
- Dispersion,
- Hysteresis,
- Platinum,
- Ruthenium,
- Catalytic wet air oxidation,
- Methylamine
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