Hydrogen Production from Ethanol Steam Reforming over Co-Ni/CeO2 Catalysts Prepared by Coprecipitation

Rui Qi Dai; Ya Zhong Chen; Fang Jin; Peng Cui

doi:10.4028/www.scientific.net/AMR.724-725.729

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 724-725Hydrogen Production from Ethanol Steam Reforming...

Hydrogen Production from Ethanol Steam Reforming over Co-Ni/CeO₂ Catalysts Prepared by Coprecipitation

Abstract:

Co/CeO₂ catalysts showed good catalytic performances in terms of activity, selectivity and stability for intermediate temperature ethanol steam reforming, while low temperature activity should be improved. Thus, effect of nickel incorporation into Co/CeO₂ catalysts for ethanol steam reforming was investigated on the consideration of high activity for CC bond cleavage at low temperature of nickel, while cobalt may improve yield of hydrogen due to the depression of CH₄ formation. A series of Co-Ni/CeO₂ catalysts were prepared by coprecipitation, characterized by low temperature N₂ adsorption, X-ray diffraction, temperature programmed reduction, and catalytic performance measurement for ethanol steam reforming. The results indicated that 10.0% nickel incorporation into Co/CeO₂ resulted in much better catalytic performances, complete conversion of ethanol into C₁species and hydrogen yield about 60.0% at 350°C were obtained. Further increase of nickel content decreased catalytic performance. The high performance of the Co₁₀-Ni₁₀/CeO₂ was attributed to enhancement of surface Ce⁴⁺ reduction and fine particles of metal.

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Advanced Materials Research (Volumes 724-725)

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729-734

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https://doi.org/10.4028/www.scientific.net/AMR.724-725.729

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August 2013

Authors:

Rui Qi Dai, Ya Zhong Chen, Fang Jin, Peng Cui

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Co-Ni/CeO₂ Catalysts, Coprecipitation, Ethanol Steam Reforming

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