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Topics in Catalysis

, Volume 59, Issue 15–16, pp 1354–1360 | Cite as

Microstructural Changes in La1−xCaxCoO3−δ Solid Solutions Under the Influence of Catalytic Reaction of Methane Combustion

  • E. GerasimovEmail author
  • N. Kulikovskaya
  • A. Chuvilin
  • L. Isupova
  • S. Tsybulya
Original Paper

Abstract

Degradation of the surface of solid solutions La1−xCaxCoO3−δ (0.4 ≥ x ≥ 0) synthesized by the Pechini method was observed after catalytic oxidation of methane. According to XRD analysis, after the catalytic oxidation of CH4, the crystal structure of the samples did not change significantly, but HRTEM indicated the formation of nanoheterogeneities on the surface of the perovskite phase. Planar defects are formed in the direction of the crystallographic planes (111). Under the action of the reaction medium, areas with alternating layers having the perovskite and brownmillerite structure appeared in La0.6Ca0.4CoO3−δ.

Keywords

Perovskite Planar defects XRD HRTEM Oxidation 

Notes

Acknowledgments

The study was supported by the Russian Science Foundation, Project No. 14-23-00037. Dr. A. Chuvilin also acknowledges financial support of FP7-PEOPLE-2011-IRSES N295180 (MagNonMag) project.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • E. Gerasimov
    • 1
    • 2
    Email author
  • N. Kulikovskaya
    • 1
  • A. Chuvilin
    • 3
    • 4
  • L. Isupova
    • 1
  • S. Tsybulya
    • 1
    • 2
  1. 1.Boreskov Institute of CatalysisNovosibirskRussia
  2. 2.Novosibirsk State UniversityNovosibirskRussia
  3. 3.CIC nanoGUNE ConsoliderSan SebastiánSpain
  4. 4.IKERBASQUE Basque Foundation for ScienceBilbaoSpain

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