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Partial oxidation of methane over silica supported molybdenum oxide catalysts

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Abstract

Two kinds of MoO3/SiO2 catalysts, MoO3-I and MoO3-S, were prepared by impregnation and sol-gel method, respectively. When MoO3 loading was increased, formation of MoO3 crystals was observed to begin at a MoO3 loading of 8 and 16 wt% with MoO3-I and MoO3-S, respectively. The highest yield of formaldehyde from methane oxidation was attained also at those critical values of MoO3 loading of 8 and 16 wt% over MoO3-I and MoO3-S, respectively. It is suggested that the active species for formaldehyde formation is well dispersed molybdenum oxide clusters on SiO2 support: the optimum dispersion of the clusters affords the highest activity for formaldehyde formation.

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Authors and Affiliations

  1. Department of Surface Chemistry, National Institute of Materials and Chemical Research, MITI, Tsukuba Research Center, Tsukuba, 305, Ibaraki, Japan

    Kunio Suzuki, Takashi Hayakawa, Masao Shimizu & Katsuomi Takehira

Authors
  1. Kunio Suzuki
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  2. Takashi Hayakawa
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  3. Masao Shimizu
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  4. Katsuomi Takehira
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Suzuki, K., Hayakawa, T., Shimizu, M. et al. Partial oxidation of methane over silica supported molybdenum oxide catalysts. Catal Lett 30, 159–169 (1994). https://doi.org/10.1007/BF00813682

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  • DOI: https://doi.org/10.1007/BF00813682

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