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Fe、Ce、Cu对MnAC催化剂低温脱硝及抗硫性能的影响研究.docx

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Fe、Ce、Cu对MnAC催化剂低温脱硝及抗硫性能的影响研究 Title:StudyontheEffectofFe,Ce,andCuontheLow-temperatureDenitrificationandSulfurResistancePerformanceofMnACCatalysts Abstract: Inrecentyears,thedevelopmentofcatalystsfortheremovalofnitrogenoxides(NOx)fromfluegaseshasgainedsignificantattentionduetotheirenvironmentalimpact.Particularly,thedemandforlow-temperaturedenitrificationcatalystswithexcellentsulfurresistancehasincreasedtoaccommodatethecurrentneedsofindustrialprocesses.ThisstudyinvestigatestheimpactofFe,Ce,andCuonthelow-temperaturedenitrificationandsulfurresistanceperformanceofMnACcatalysts.Thecatalystswerepreparedusingimpregnationmethod,andtheirperformancewasevaluatedthroughNOxconversionandsulfurresistanceexperiments.TheresultsdemonstratethattheadditionofFe,Ce,andCucansignificantlyenhancethelow-temperaturedenitrificationperformanceofMnACcatalysts,alongwithimprovedsulfurresistance. Keywords:Fe,Ce,Cu,MnACcatalysts,low-temperaturedenitrification,sulfurresistance 1.Introduction Theemissionofnitrogenoxides(NOx)hasbecomeasignificantconcernduetoitsadverseeffectsontheenvironmentandhumanhealth.CatalyticreductionofNOxtoinnocuousnitrogenandwaterusingselectivecatalyticreduction(SCR)techniqueshasemergedasaneffectiveandwidelyusedmethod.Manganese-basedcatalysts,suchasMnAC,haveshowngreatpotentialinSCRduetotheirhighactivity,lowcost,andnaturalabundance.However,thelow-temperatureperformanceofthesecatalystsisoftenlimited,andtheirsulfurresistanceneedsimprovement.Therefore,exploringsuitableadditivestoenhancethelow-temperaturedenitrificationperformanceandsulfurresistanceofMnACcatalystsisofgreatsignificance. 2.ExperimentalProcedure 2.1CatalystPreparation MnACcatalystswithvaryingamountsofFe,Ce,andCuwerepreparedusingtheimpregnationmethod.Manganeseacetateandtherespectivemetalsaltsweredissolvedindeionizedwater.Then,anappropriateamountofactivatedcarbonwasimpregnatedintothesolutionanddriedatacertaintemperature.Finally,thedriedsampleswerecalcinedatasuitabletemperaturetoobtainthecatalysts. 2.2CatalystEvaluation T