纳米镍基氧化物的制备及其乙烷氧化脱氢性能研究的中期报告-第一文库 | 海量文档资源下载与分享平台

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纳米镍基氧化物的制备及其乙烷氧化脱氢性能研究的中期报告AbstractInthisstudy,nanoscalenickel-basedoxidewassynthesizedthroughahydrothermalmethodandcharacterizedusingvariousanalyticaltechniques.Thesynthesizedmaterialwasthenappliedasacatalystfortheoxidativedehydrogenation(ODH)ofethane.Theresultsshowedthatthesynthesizednanoscalenickel-basedoxidecatalystexhibitedexcellentODHperformance,achievingaconversionrateofupto45%atareactiontemperatureof500℃.Thisisduetotheuniquestructureofthenanoscalenickel-basedoxide,whichprovidesahighspecificsurfaceareaandgreatercontactbetweenthecatalystandreactants.IntroductionInrecentyears,ethanehasattractedincreasingattentionasanimportantrawmaterialfortheproductionofethylene,awidelyusedchemicalinvariousindustriessuchasplasticsandsyntheticfibers.However,thetraditionalmethodforobtainingethylenefromethanerequireshightemperatures,pressures,andenergyconsumption,resultinginlowefficiencyandhighcost.Theoxidativedehydrogenation(ODH)ofethanehasemergedasanalternativemethodfortheproductionofethyleneduetoitslowenergyconsumptionandhighselectivity.TheuseofasuitablecatalystplaysacriticalroleintheODHprocess.Nanomaterialspossessuniquestructuralandelectronicpropertiesduetotheirsmallsize,whichendowsthemwithspecialphysicalandchemicalproperties.Asaresult,nanoscalematerialshaveattractedsignificantresearchinterestinvariousfields,includingcatalysis.Nanoscalenickel-basedoxidehasbeenfoundtoexhibitexcellentcatalyticperformanceinmanychemicalreactions.However,thepreparationofnanoscalenickel-basedoxideisstillchallengingduetoitshighchemicalreactivity,whichmakesiteasilysusceptibletoagglomerationandsinteringduringthesynthesisprocess.Inthisstudy,wesynthesizednanoscalenickel-basedoxidethroughahydrothermalmethodandinvestigateditsODHperformanceofethane.Thegoalofthisstudyistoevaluatetheeffectofthepreparationprocessonthestructureandpropertiesofthenanoscalenickel-basedoxideandtoexploreitspotentialasacatalystfortheODHofethane.ExperimentalSynthesisofnanoscalenickel-basedoxideInatypicalsynthesisprocess,10mmo