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Preparation of Co3O4/ZrO2(Y2O3) Catalyst and its Enhanced Catalytic Oxidation of CO

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Abstract

Yttria-stabilized zirconia powders were prepared by the sol–gel method coupled with supercritical CO2 fluid-drying technology, using ZrOCl2·8H2O as the precursor, urea as the precipitant, and yttria as the stabilizer. The particles were characterized by X-ray diffraction, TEM and BET. The Co3O4/ZrO2(Y2O3) catalysts were prepared by the impregnation method. The content of cobalt was varied from 5 to 12 wt%. The prepared catalysts were calcined at 200–500 °C and the pretreating temperature was varied from 200–400 °C. The performance of CO catalytic oxidation was tested and the catalyst with 8% Co loading, calcined at 200 °C, and with a pretreating temperature of 300 °C, showed the highest catalytic activity. The temperature for 95% CO conversion was as low as 113 °C; and, the catalyst showed both good cycling stability and excellent long-term stability.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, University of Jinan, 250022, Jinan, People’s Republic of China

    Xiaolei Mu, Xiaolei Liu & Guoxin Sun

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  1. Xiaolei Mu
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  2. Xiaolei Liu
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  3. Guoxin Sun
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Correspondence to Guoxin Sun.

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Presented in part at the 1st International Congress on Advanced Materials held in Jinan, People’s Republic of China, from May 12–17, 2011.

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Mu, X., Liu, X. & Sun, G. Preparation of Co3O4/ZrO2(Y2O3) Catalyst and its Enhanced Catalytic Oxidation of CO. J Inorg Organomet Polym 22, 70–75 (2012). https://doi.org/10.1007/s10904-011-9629-9

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  • DOI: https://doi.org/10.1007/s10904-011-9629-9

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