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Complete oxidation of methane on Co3O4-SnO2 catalysts

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Abstract

Co3O4-SnO2 hybrid oxides were prepared by the coprecipitation method and were used to oxidate methane (CH4) in presence of oxygen. The Co3O4-SnO2 with a molar ratio of Co/(Co + Sn) at 0.75 exhibited the highest catalytic activity among all the Co3O4-SnO2 hybrid oxides. Experimental results showed that the catalysts were considerably stable in the CH4 combustion reaction, and were verified by X-ray photoelectron spectra (XPS). It was found that Co3O4 was the active species, and SnO2 acted as a support or a promoting component in the Co3O4-SnO2 hybrid oxides. The surface area was not a major factor that affected catalytic activity. The hydrogen temperatureprogrammed reduction (H2-TPR) results demonstrated that the interaction between cobalt and tin oxides accelerated the mobility of oxygen species of Co3O4-SnO2, leading to higher catalytic activity.

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Authors and Affiliations

  1. Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, China

    Xingfu Tang, Jiming Hao & Junhua Li

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  1. Xingfu Tang
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  2. Jiming Hao
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  3. Junhua Li
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Correspondence to Jiming Hao.

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Tang, X., Hao, J. & Li, J. Complete oxidation of methane on Co3O4-SnO2 catalysts. Front. Environ. Sci. Eng. China 3, 265–270 (2009). https://doi.org/10.1007/s11783-009-0019-2

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  • DOI: https://doi.org/10.1007/s11783-009-0019-2

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