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Catalytic and physico-chemical properties of La1−xSrxCoO3 perovskites

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Abstract

Catalytic properties of strontium-substituted lanthanum cobaltites La1−xSrxCoO3 in the reaction of CO oxidation were compared with the data about chemical composition of the surface and bulk defect structure. It was found that (1) the initial catalytic activity correlates with the cobalt concentration on the surface; (2) surface composition differs from the bulk one; (3) the steady-state activity is proportional to the density of bulk extended defects. Under our experimental conditions no role of point defects was noted.

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Authors and Affiliations

  1. Boreskov Institute of Catalysis, 630090, Novosibirsk, Russia

    L. A. Isupova, V. A. Sadykov, V. P. Ivanov, A. A. Rar, S. V. Tsybulya, M. P. Andrianova & V. N. Kolomilchuk

  2. Ural State University, 620083, Ekaterinburg, Russia

    A. N. Petrov & O. F. Kononchuk

Authors
  1. L. A. Isupova
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  2. V. A. Sadykov
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  3. V. P. Ivanov
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  4. A. A. Rar
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  5. S. V. Tsybulya
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  6. M. P. Andrianova
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  7. V. N. Kolomilchuk
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  8. A. N. Petrov
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  9. O. F. Kononchuk
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Isupova, L.A., Sadykov, V.A., Ivanov, V.P. et al. Catalytic and physico-chemical properties of La1−xSrxCoO3 perovskites. React Kinet Catal Lett 53, 223–229 (1994). https://doi.org/10.1007/BF02070135

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  • DOI: https://doi.org/10.1007/BF02070135

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