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  4. Electrochemical promotion of IrO2 catalyst for the gas-phase combustion of ethylene (modeling galvanostatic transients)
 
conference paper

Electrochemical promotion of IrO2 catalyst for the gas-phase combustion of ethylene (modeling galvanostatic transients)

Foti, G.  
•
Stankovic, V.
•
Bolzonella, I.  
Show more
2001
Energy and Electrochemical Processes for a Cleaner Environment

A model for the electrochem. promotion induced by electrochem. generated promoting species is proposed. The formation rate of promoters is assumed to be proportional to the availability of free surface sites at the solid electrolyte/catalyst/gas three-phase boundary, and their spreading out over the gas exposed catalyst surface to be rapid compared to the rate of their consumption. The model predicts exponential catalytic rate transients with current dependent polarization and current independent relaxation behavior. It enables detn. of the max. limiting value of the Faradaic efficiency, being a current independent property of the catalytic system. The validity of the model was confirmed by anodic galvanostatic promotion expts. of ethylene combustion over IrO2/YSZ catalyst at highly oxidative feed conditions. [on SciFinder (R)]

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Type
conference paper
Web of Science ID

WOS:000186760400021

Author(s)
Foti, G.  
Stankovic, V.
Bolzonella, I.  
Eaves, J.
Comninellis, Ch  
Date Issued

2001

Published in
Energy and Electrochemical Processes for a Cleaner Environment
Series title/Series vol.

Proceedings - Electrochemical Society; 2001-23

Start page

220

End page

229

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
GGEC  
Available on Infoscience
February 22, 2006
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/225376
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