Complete oxidation of methane on Pd/YSZ and Pd/CeO₂/YSZ by electrochemical promotion

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• 作者：Carmen Jimé ; nez-Borja ; Fern ; o Dorado ; Antonio de Lucas-Consuegra ; Jesú ; s Manuel Garcí ; a-Vargas ; José ; Luis Valverde
• 关键词：Electrochemical promotion ; Methane combustion ; Permanent effect ; Palladium catalyst
• 刊名：Catalysis Today
• 出版年：2009
• 出版时间：31 August 2009
• 年：2009
• 卷：146
• 期：3-4
• 页码：326-329
• 全文大小：271 K

文摘

In this work, methane combustion over Pd/YSZ and Pd/CeO₂/YSZ catalyst was investigated at a temperature range of 470–600 °C. For the first time, the feasibility of electrochemical promotion on palladium films prepared by wet impregnation was reported. The catalytic activity of palladium was found to increase over 160 % via transference of oxygen ions from the solid electrolyte to the catalyst film. In addition, palladium supported over ceria and yttria-stabilized zirconia showed the highest activity. As expected, the presence of ceria allowed improving the oxygen storage capacity of the catalyst system.