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Electrochemical promotion of propane oxidation over Pd, Ir, and Ru catalyst-electrodes deposited on YSZ

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Abstract

The effect of electrochemical promotion of catalysis was investigated for the oxidation of propane using Pd, Ir, and Ru catalyst-electrodes sputter-deposited on YSZ disks in the temperature range of 250–450 °C. Electrophobic type behavior was observed, i.e., the catalytic reaction rate was found to increase with catalyst potential. The observed rate changes under polarization were strongly non-Faradaic and exceeded under anodic potential application the electrocatalytic rate of O2− supply to the catalyst surface, I/2F, by up to a factor of 250 for Pd, 125 for Ir, and 15 for Ru catalyst-electrodes.

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Acknowledgments

Saranya Peng-ont, Suttichai Assabumrungrat, and Piyasan Praserthdam would like to thank the financial supports from the Royal Golden Jubilee PhD program under the Thailand Research Fund and the Chulalongkorn University, and the TRF senior researcher scholar under the Thailand Research Fund. Susanne Brosda and Constantinos G. Vayenas gratefully thank the “Synergasia” and “Aristeia” programs of the Greek Secretary of Research and Technology (GSRT) for partial financial support.

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Correspondence to S. Brosda.

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Peng-ont, S., Souentie, S., Assabumrungrat, S. et al. Electrochemical promotion of propane oxidation over Pd, Ir, and Ru catalyst-electrodes deposited on YSZ. Ionics 19, 1705–1714 (2013). https://doi.org/10.1007/s11581-013-0931-0

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Keywords

  • Propane oxidation
  • Electrochemical promotion
  • EPOC
  • NEMCA
  • Pd
  • Ir
  • Ru
  • Catalyst-electrode
  • Yttria-stabilized zirconia