Combustion of methane–hydrogen mixtures on catalytic tablets

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• 作者：Andrea Scarpa ; Paola Sabrina Barbato ; Gianluca L ; i ; Raffaele Pirone ; Gennaro Russo
• 关键词：Micro-combustor ; Methane ; Hydrogen ; Catalysis
• 刊名：Chemical Engineering Journal
• 出版年：2009
• 出版时间：15 November 2009
• 年：2009
• 卷：154
• 期：1-3
• 页码：315-324
• 全文大小：1187 K

文摘

Catalytic micro-combustors have been developed via deposition of active layers of Pt/γ-Al₂O₃, LaMnO₃/γ-Al₂O₃ and Pt-LaMnO₃/γ-Al₂O₃ on FeCralloy and α-Al₂O₃ slabs. Diffusional resistance in the gas phase have been experimental excluded, even if catalyst is present on only one side of the reactor. Pt/γ-Al₂O₃ gave best performances in the combustion of H₂ while LaMnO₃/γ-Al₂O₃ revealed to be the best catalyst for methane combustion. The mixture Pt–LaMnO₃ supported on γ-Al₂O₃ showed intermediate properties for both fuels.

The combustion of H₂–CH₄ mixtures showed that the presence of hydrogen promotes the oxidation of methane, since above 700 °C radical reactions involving CH₄ are activated by H₂ ignition.