Selective CO oxidation over promoted Au/γ-Al₂O₃ catalysts in the presence of CO₂ and H₂O in the feed

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• 作者：Tuğ ; ba Davran-Candan^a ; Sadi T. Tezcanl&#x131 ; ^a ; Ramazan Y&#x131 ; ld&#x131 ; r&#x131 ; m ; ^a ; ^{yildirra@boun.edu.tr"" rel=""nofollow}
• 关键词：Selective CO oxidation ; Promoted Au catalysts ; Au/γ ; -Al₂O₃ ; Fuel cell ; Fuel processor
• 刊名：Catalysis Communications
• 出版年：2011
• 出版时间：1 July 2011
• 年：2011
• 卷：12
• 期：12
• 页码：1149-1152
• 全文大小：585 K

文摘

In this work, the effect of promoter type (Mg, Mn, Ce, Co, Fe and Ni) on selective CO oxidation performance of Au/γ-Al₂O₃ was studied with the realistic feed stream containing CO₂ and H₂O. The effects of Au loading, promoter loading, reaction temperature and the feed composition were also investigated. It was found that MgO was the best promoter in the presence of CO₂ and H₂O, and 1.25 wt. %  Mg was sufficient for promotion. The CO conversion decreased with the addition of CO₂ while the presence of H₂O had some positive effects.