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Critical Influence of Mn on Low-Temperature Catalytic Activity of Mn/Na2WO4/SiO2 Catalyst for Oxidative Coupling of Methane

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Abstract

Oxidative coupling of methane (OCM) was investigated in the temperature range 370-775 °C over Mn/Na2WO4/SiO2 catalysts with different loadings of manganese in integral-mode conditions. Na2WO4/SiO2 shows no activity at low temperature (370 °C), whereas Mn-doped catalyst exhibits 14% C2+ yield under similar reaction conditions, indicating that manganese plays a critical role in low-temperature methane coupling reaction. Partial pressure of oxygen in the feed also influences the low-temperature OCM activity of the catalysts.

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Authors and Affiliations

  1. Inorganic Chemistry Research Laboratory, Department of Chemistry, University of Tehran, 14155-6455, Tehran, Iran

    A. Malekzadeh, M. Abedini & M. Amini

  2. Catalysis and Chemical Reaction Engineering Laboratory, Department of Chemical Engineering, University of Tehran, 11365/4563, Tehran, Iran

    A.A. Khodadadi

  3. Catalysis and Chemical Reaction Engineering Laboratory, Department of Chemical Engineering, University of Saskatchewan, 110 Science Place, Saskatoon, S7N 5C9, Canada

    H.K. Mishra & A.K. Dalai

Authors
  1. A. Malekzadeh
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  2. M. Abedini
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  3. A.A. Khodadadi
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  4. M. Amini
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  5. H.K. Mishra
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  6. A.K. Dalai
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Malekzadeh, A., Abedini, M., Khodadadi, A. et al. Critical Influence of Mn on Low-Temperature Catalytic Activity of Mn/Na2WO4/SiO2 Catalyst for Oxidative Coupling of Methane. Catalysis Letters 84, 45–51 (2002). https://doi.org/10.1023/A:1021020516674

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