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Mössbauer spectrometric study of nonstoichiometric perovskite, A (Co0.8Fe0.2) O3−° (A=Ba, Sr, Ca), for oxidative coupling of methane

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Abstract

Nonstoichiometric perovskites. A(Co0.8Fe0.2)O3−6, were prepared by a pyrolysis of mixed metal citrates, and the catalytic property and structure of these perovskites were investigated. The efficiency of an oxidative coupling of methane increases with the order of Ba. Sr, and Ca substituted in A site and decreases with the amounts of deficient oxygens. The mixed valence of B site ions in the disordering of deficient oxygen is considered to contribute mainly to the oxidative coupling of methane.

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Authors and Affiliations

  1. Faculty of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, 113, Tokyo, Japan

    Kiyoshi Nomura, Takeshi Goda & Yusuke Ujihira

  2. National Chemical Laboratory for Industry, Higashi 1-1, 305, Tsukuba city, Ibaragi Pref., Japan

    Takashi Hayakawa & Katsuomi Takehira

Authors
  1. Kiyoshi Nomura
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  2. Takeshi Goda
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  3. Yusuke Ujihira
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  4. Takashi Hayakawa
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  5. Katsuomi Takehira
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Nomura, K., Goda, T., Ujihira, Y. et al. Mössbauer spectrometric study of nonstoichiometric perovskite, A (Co0.8Fe0.2) O3−° (A=Ba, Sr, Ca), for oxidative coupling of methane. Hyperfine Interact 69, 835–838 (1992). https://doi.org/10.1007/BF02401956

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  • DOI: https://doi.org/10.1007/BF02401956

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