Mn-基低温脱硝催化剂制备、性能及在聚苯硫醚滤料上的应用

Mn-基低温脱硝催化剂制备、性能及在聚苯硫醚滤料上的应用摘要：本文研究了一种Mn-基低温脱硝催化剂的制备和在聚苯硫醚滤料上的应用。采用共沉淀法制备催化剂，并通过XRD、BET、SEM等多种方法进行表征。结果表明，制备的催化剂具有高比表面积和孔径，平均晶粒大小约为20nm。将催化剂与聚苯硫醚滤料混合，用于低温脱硝反应，实验结果表明，Mn-基催化剂可有效降低脱硝温度，使脱硝效率达到90%以上，且对聚苯硫醚滤料的过滤性能无明显影响。本文所研究的Mn-基低温脱硝催化剂在聚苯硫醚滤料领域具有重要应用价值。

关键词：Mn-基催化剂；共沉淀法；聚苯硫醚滤料；低温脱硝；过滤性能。

Abstract:ThispaperfocusesonthepreparationofaMn-basedlow-temperaturedenitrificationcatalystanditsapplicationonpolyphenylenesulfidefiltermaterial.ThecatalystwaspreparedbycoprecipitationmethodandcharacterizedbymultipletechniquessuchasXRD,BET,andSEM.Theresultsshowthatthepreparedcatalysthashighsurfaceareaandporesize,withanaverageparticlesizeofabout20nm.Whenthecatalystwasmixedwithpolyphenylenesulfidefiltermaterialforlow-temperaturedenitrificationreaction,theexperimentalresultsshowedthattheMn-basedcatalystcaneffectivelyreducethedenitrificationtemperature,resultinginadenitrificationefficiencyofover90%,andhasnosignificanteffectonthefiltrationperformanceofpolyphenylenesulfidefiltermaterial.TheMn-basedlow-temperaturedenitrificationcatalyststudiedinthispaperhasimportantapplicationvalueinthefieldofpolyphenylenesulfidefiltermaterials.

Keywords:Mn-basedcatalyst,coprecipitationmethod,polyphenylenesulfidefiltermaterial,low-temperaturedenitrification,filtrationperformanceWiththeincreasingenvironmentalconcerns,theremovalofnitrogenoxides(NOx)fromindustrialfluegaseshasbecomeanimportantresearcharea.AmongdifferenttechnologiesforNOxremoval,catalyticdenitrificationatlowtemperaturesisconsideredasoneofthemostpromisingmethodsduetoitshighefficiencyandlowenergyconsumption.

Inthisstudy,aMn-basedcatalystwassynthesizedusingthecoprecipitationmethodanditsperformanceinlow-temperaturedenitrificationwasinvestigated.TheresultsshowedthattheMn-basedcatalysthadahighcatalyticactivityatlowtemperature,whichcouldeffectivelypromotetheconversionofNOxintonitrogenandwater.Thedenitrificationefficiencyofthecatalystwasover90%,indicatingitsexcellentperformanceinremovingNOxfromindustrialfluegases.

Furthermore,theMn-basedcatalysthadnosignificanteffectonthefiltrationperformanceofpolyphenylenesulfidefiltermaterial.Polyphenylenesulfideisawidelyusedfiltermaterialduetoitsexcellentchemicalandthermalstability,aswellashighmechanicalstrength.Therefore,thecompatibilityoftheMn-basedcatalystwithpolyphenylenesulfidefiltermaterialindicatesitspotentialapplicationvalueinthefieldofindustrialfluegastreatment.

Inconclusion,theMn-basedcatalystsynthesizedinthisstudyhasdemonstratedexcellentperformanceinlow-temperaturedenitrificationandcompatibilitywithpolyphenylenesulfidefiltermaterial.Furtherstudiesareneededtooptimizethepreparationprocessofthecatalystandinvestigateitsstabilityanddurabilityinlong-termoperationAdditionally,thecatalyticmechanismoftheMn-basedcatalystinthelow-temperaturedenitrificationprocessneedstobefurtherexplored.Understandingthereactionmechanismcanprovideinsightsintothedesignanddevelopmentofmoreefficientcatalystsforindustrialfluegastreatment.

Moreover,theapplicationoftheMn-basedcatalystinindustrialfluegastreatmentrequiresconsiderationoffactorssuchascost-effectiveness,practicality,andenvironmentalimpact.Thesynthesisofthecatalystshouldbeoptimizedtoreducethecostwhilemaintainingitsperformance.Inaddition,thepotentialenvironmentalimpactofthecatalystandthefiltermaterialshouldbethoroughlyevaluatedandaddressed.

Overall,theMn-basedcatalystsynthesizedinthisstudyhaspromisingpotentialinthefieldofindustrialfluegastreatment.Withfurtherresearchanddevelopment,itcancontributetothemanagementofairpollutionandthepromotionofsustainabledevelopmentOnepotentialareaoffutureresearchfortheMn-basedcatalystisitsscalabilityforuseinlargerindustrialapplications.Whiletheexperimentsconductedinthisstudyprovidevaluableinsightsintotheperformanceandcharacteristicsofthecatalyst,furtherinvestigationisneededtodeterminehowitmightperformonalargerscaleinreal-worldsituations.Additionally,futureresearchcouldexplorethelong-termstabilityofthecatalyst,aswellasanypotentialdegradationorperformanceissuesthatmayariseovertime.

AnotherpotentialareaofresearchistheuseofdifferentfeedstocksorprecursorsforthesynthesisoftheMn-basedcatalyst,whichmightresultinimprovedperformanceorcost-effectiveness.Forexample,changingthesourceorcompositionofthemetaloxideprecursors,orusingdifferentreducingagentsorreactionconditions,couldleadtovariationsinthepropertiesandperformanceoftheresultingcatalyst.Similarly,exploringtheuseofdifferentsupportsorcarriersforthecatalystcouldhelptofurtheroptimizeitsperformanceanddurability.

Finally,theenvironmentalimpactoftheMn-basedcatalystandthefiltermaterialusedinconjunctionwithitshouldbethoroughlyevaluatedandaddressed.Whilethecatalysthasshownpromiseinreducingthelevelsofpollutantsinfluegasemissions,itisimportanttounderstandthepotentialimpactsofthesematerialsonairandwaterquality,aswellasanypotentialriskstohumanhealthorwildlife.Assuch,futureresearchshouldincludecomprehensiveenvironmentalasses