, Volume 4, Issue 3–4, pp 207–214 | Cite as

Electrochemical promotion of electronically isolated and dispersed Pt catalysts

  • M. Marwood
  • S. Balomenou
  • A. Tsiliras
  • C. A. Cavalca
  • C. Pliangos
  • C. G. Vayenas


In this paper we discuss the first attempts to induce the effect of Electrochemical Promotion or Non-Faradaic Electrochemical Modification of Catalytic Activity (NEMCA) on highly dispersed catalyst-electrodes systems which can compete in terms of dispersion and surface area with industrial catalysts. Three systems are discussed:
  1. 1.

    Electrochemical promotion of C2H4 oxidation on electronically isolated Pt catalysts on Y2O3-stabilized-Zirconia (YSZ) where NEMCA is induced via potential application between two terminal Au electrodes also supported on the solid electrolyte (bipolar design).

  2. 2.

    Electrochemical promotion of C2H4 oxidation on a finely dispersed Pt catalyst deposited on a Au electrode which is supported on YSZ.

  3. 3.

    Induction of NEMCA during CH3OH oxidation on Pt without external voltage application by utilizing the potential difference developed between the catalyst and a catalytically inert counter electrode.


In all cases significant non faradaic behavior has been obtained. The underlying catalytic/ electro-catalytic phenomena are discussed together with some of the engineering challenges for potential practical applications.


Catalytic Activity Voltage Application CH3OH Counter Electrode Solid Electrolyte 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© IfI - Institute for Ionics 1998

Authors and Affiliations

  • M. Marwood
    • 1
  • S. Balomenou
    • 1
  • A. Tsiliras
    • 1
  • C. A. Cavalca
    • 1
  • C. Pliangos
    • 1
  • C. G. Vayenas
    • 1
  1. 1.Department of Chemical EngineeringUniversity of PatrasPatrasGreece

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