Electrochemical promotion of propane oxidation over Pd, Ir, and Ru catalyst-electrodes deposited on YSZ |
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| Authors: | S Peng-ont S Souentie S Assabumrungrat P Praserthdam S Brosda C G Vayenas |
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| Institution: | 1. LCEP, Department of Chemical Engineering, University of Patras, Patras, 26504, Greece
2. Center of Excellence in Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
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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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