Electrochemical promotion of propane oxidation over Pd, Ir, and Ru catalyst-electrodes deposited on YSZ
- 295 Downloads
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.
KeywordsPropane oxidation Electrochemical promotion EPOC NEMCA Pd Ir Ru Catalyst-electrode Yttria-stabilized zirconia
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.
- 1.Gélin P, Primet M (2007) Complete oxidation of methane at low temperature over noble metal based catalysts: a review. Appl Catal B 39:1Google Scholar
- 5.Glinrun T, Mekasuwandumrong O, Panpranot J, Chaisuk C, Praserthdam P (2010) Improvement of propane oxidation activity over Pt/Al2O3 by the use of MIXED γ- and χ-Al2O3 supports. Reac Kinet Mech Cat 100:441Google Scholar
- 6.Vernoux P, Lizarraga L, Tsampas MN, Sapountzi FM, De Lucas-Consuegra A, Valverde JL, Souentie S, Vayenas CG, Tsiplakides D, Balomenou S, Baranova EA (2013) Ionically conducting ceramics as active catalyst supports. Chem Rev. doi: 10.1021/cr4000336
- 7.Vayenas CG, Bebelis SB, Pliangos C, Brosda S, Tsiplakidis D (2001) Electrochemical activation of catalysis: promotion, electrochemical promotion and metal-support interactions. Kluwer, New YorkGoogle Scholar
- 8.Jiménez-Borja C, de Lucas-Consuegra A, Valverde JL, Dorado F, Caravaca A, Gonzáles J, (2012) On of the recent discoveries in catalysis: The phenomenon of electrochemical promotion. In: Taylor JC (ed) Advances in chemistry research, vol 14 ch 4. Nova Science Publishers, Hauppauge NY, USAGoogle Scholar