CO Preferential Oxidation in Hydrogen Stream over Au/CeO2, Au/Co3O4 and Au/CeO2-Co3O4 Catalysts for Fuel Cell Application
The catalytic performance of Au/CeO2,Au/Co3O4 and Au/CeO2-Co3O4 for CO preferential oxidation (PROX) in hydrogen stream was investigated.For Au/CeO2,the highest CO conversion of 97％ is reached at 105 oC with 54％ selectivity.Over Au/Co3O4,100％ CO conversion can be obtained at 118-140 oC,but methanation reaction takes place at 160 oC.As for Au/CeO2-Co3O4,100％ CO conversion with 56％ selectivity can be obtained at ambient temperature; it is a good catalyst for CO PROX without methanation.Moreover,it also has excellent stability for CO PROX at 80 oC and during the cyclic temperature operation.The characterizations results demonstrated that the significant interaction between ceria and cobalt oxide existed and should be responsible for the superiority of Au/CeO2-Co3O4
CO Preferential Oxidation:Au/CeO2:Au/Co3O4:Au/CeO2-Co3O4:Fuel cell
H.Wang H.Q. Zhu Z.F.Qin G.F.Wang J.G.Wang
State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,P.O.Box 165,Taiyuan,Shanxi 030001,China
国际会议
The 8th International Symposium on Gas Cleaning at High Temperatures(第八届国际高温气体净化技术研讨会 GCHT-8)
太原
英文
504-513
2010-08-23（万方平台首次上网日期，不代表论文的发表时间）