Catalysis Letters

, Volume 18, Issue 1–2, pp 153–164 | Cite as

On the origin of the non-faradaic electrochemical modification of catalytic activity (NEMCA) phenomena. Oxygen isotope exchange on Pt electrode in cell with solid oxide electrolyte

  • V. A. Sobyanin
  • V. I. Sobolev
  • V. D. Belyaev
  • O. A. Mar'ina
  • A. K. Demin
  • A. S. Lipilin


Homomolecular oxygen exchange on Pt electrode in a zirconia electrochemical cell was studied. It was found that the current passing through the cell (O2− pumping through the electrolyte) does not change the rate of oxygen exchange on the Pt electrode with respect to its open circuit value, a fact that indicates that the strength of the chemisorptive bond of oxygen on the Pt electrode is invariant under open and closed circuit conditions.


Oxygen isotope exchange Pt electrode solid oxide electrolyte oxygen pumping NEMCA phenomena 


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Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • V. A. Sobyanin
    • 1
  • V. I. Sobolev
    • 1
  • V. D. Belyaev
    • 1
  • O. A. Mar'ina
    • 1
  • A. K. Demin
    • 2
  • A. S. Lipilin
    • 2
  1. 1.Institute of CatalysisNovosibirskRussia
  2. 2.Institute of ElectrochemistryEkaterinburgRussia

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