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Effect of structural disorder on the catalytic activity of mixed La−Sr−Co−Fr−O perovskites

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Abstract

For a perovskite system La0.7Sr0.3Co1-xFexO3, the effect of partial substitution of Co by Fe on the particle microstructure and chemical composition of the surface layer has been studied. Iron incorporation was found to cause a structure rearrangement from the hexagonal (at x<0.05) to the cubic (atx>0.05) type, which was not accompanied by any appreciable variation of the surface layer composition. A transient sample with x=0.05 was characterized by a high degree of misorientation of microblocks and had the highest activity in the CO catalytic oxidation.

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Authors and Affiliations

  1. Federal Scientific Center, Boreskov Institute of Catalysis, 630090, Novosibirsk, Russia

    L. A. Isupova, V. A. Sadykov, S. V. Tsybulya, G. N. Kryukova & V. P. Ivanov

  2. Ural State University, Ekaterinburg, 620083, 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. S. V. Tsybulya
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  4. G. N. Kryukova
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  5. V. P. Ivanov
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  6. A. N. Petrov
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  7. O. F. Kononchuk
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Isupova, L.A., Sadykov, V.A., Tsybulya, S.V. et al. Effect of structural disorder on the catalytic activity of mixed La−Sr−Co−Fr−O perovskites. React Kinet Catal Lett 62, 129–135 (1997). https://doi.org/10.1007/BF02475723

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  • DOI: https://doi.org/10.1007/BF02475723

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