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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 34, Number 8
BKCSDE 34(8)
August 20, 2013

Title	The Complete Oxidation of Ethanol at Low Temperature over a Novel Pd–Ce/γ-Al₂O₃–TiO₂ Catalyst
Author	Yanping Wang, Jinshuang Zhao, Xiaoli Wang, Zhe Li* and Pengfei Liu
Keywords	Ethanol complete oxidation, CO₂ selectivity, γ-Al₂O₃–TiO₂, Pd dispersion, Pd–Ce/γ-Al₂O₃–TiO₂
Abstract	Pd–Ce/γ-Al2O3–TiO2 catalysts were prepared by combined sol–gel and impregnation methods. Transmission electron microscopy, X-ray diffraction, H2-temperature-programmed reduction, O2-temperature-programmed desorption, and ethanol oxidation experiments were conducted to determine the properties of the catalysts. Addition of an optimal amount of Ce improved the performance of the Pd/γ-Al2O3–TiO2 catalyst in promoting the complete oxidation of ethanol. The catalyst with 1% Ce exhibited the highest activity, and catalyzed complete oxidation of ethanol at 175 °C; its selectivity to CO2 reached 87%. Characterization results show that addition of appropriate amount of Ce could enrich the PdO species, and weaken the Pd–O bonds, thus enhancing oxidation ability of the catalyst. Meanwhile, the introduction of CeO2 could make PdO better dispersed on γ-Al2O3–TiO2, which is beneficial for the improvement of the catalytic oxidation activity.
Page	2461 - 2465
Full Text	PDF

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