%0 Journal Article
%T EffectsofSelectedPromotersonNi/¦Ã-Al2O3CatalystPerformanceinMethaneDryReforming
%A Ahmed S. A. AL-FATESH
%A Anis H. FAKEEHA
%A Ahmed E. ABASAEED
%J ´ß»¯Ñ§±¨
%P 1604-1609
%D 2011
%R 10.1016/S1872-2067(10)60267-7
%X £¿TheNicatalystssupportedon¦Ã-Al2O3weresynthesizedbyanimpregnationmethod.Theircatalyticperformanceinmethanedryreformingwasinvestigated.ThereformingreactionswerecarriedoutinamicroreactorusingaCO2:CH4feedratioof1:1,aF/W=2640ml/(h¡¤g),reactiontemperaturesbetween500¨C850¡ãC,andatatmosphericpressure.TheinfluenceofCa,Ce,andZrpromotersoncatalyststability,cokedeposition,andtheH2/COratiowerealsostudied.Effluentswereanalyzedusinganonlinegaschromatographequippedwithathermalconductivitydetector.Thespentandfreshcatalystswerecharacterizedbyscanningelectronmicroscopyandthermogravimetricanalysis.Itwasfoundthat3%Ni/¦Ã-Al2O3promotedwith0.15%Ceand0.05%Cagavethebestperformanceandresultedinlesscokeformation.ThehighestCH4andCO2conversionactivitieswerefoundtobe94.1%and98.3%at850¡ãC,respectively.Stabilitytestswerecarriedoutfor130handthisprovidedaH2yieldof91%.Moreover,theamountofformedcarbonwasnegligibleanddidnotincreasetomorethan1.5wt%.
%K methane
%K dryreforming
%K coke
%K nickel
%K synthesisgas
%K stability
%U http://www.chxb.cn/CN/abstract/abstract20531.shtml