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Catalysis Letters

, Volume 148, Issue 2, pp 653–659 | Cite as

New Oscillating System: Co Oxidation over Ni

  • V. Yu. Bychkov
  • Yu. P. Tulenin
  • M. M. Slinko
  • Yu. A. Gordienko
  • V. N. Korchak
Article
  • 130 Downloads

Abstract

For the first time, the oscillatory behavior during CO oxidation over Ni foil has been discovered under atmospheric pressure conditions in the temperature range of 570–630 °C. The oscillatory behavior occurred in CO excess in contrast to the well-known oscillations during CO oxidation over Pt, Pd, Ir, and Ru. The periodic variation of oxygen imbalance together with the variation of color changes during the oscillations indicated that the oscillations were closely connected with the reversible oxidation of Ni to NiO. The observation of oscillations in a pulse supply mode proved their kinetic origin. The oscillations were accompanied by the propagation of the oxidation and reduction fronts which could be observed with the naked eye.

Graphical Abstract

Temporal and spatial self-organization during CO oxidation over Ni foil.

Keywords

Oscillations CO oxidation Ni Spatiotemporal behavior Surface waves 

Notes

Acknowledgements

This work was supported by the Russian Science Foundation (Grant No. 17-13-01057).

Supplementary material

10562_2017_2283_MOESM1_ESM.rar (17.7 mb)
Supplementary material 1 (RAR 18125 KB)

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2017

Authors and Affiliations

  • V. Yu. Bychkov
    • 1
  • Yu. P. Tulenin
    • 1
  • M. M. Slinko
    • 1
  • Yu. A. Gordienko
    • 1
  • V. N. Korchak
    • 1
  1. 1.Semenov Institute of Chemical PhysicsRussian Academy of SciencesMoscowRussia

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