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ID:39139250
大小:2.26 MB
页数:67页
时间:2019-06-25
《氧化铈担载活泼金属催化剂上CO催化氧化的分析》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、一●●,dp辽宁师范大学硕士学位论文Thestudyoflow—temperatureCOoxidationoverceriabasedactivemetalAbstractCarbonmonoxide(C0)isoneofthemaingaseouspollutants,whichisgenerallyproducedandreleasedfromthecombustionprocessoffossilfuel.ManycatalystshavebeendesignedandtestedforCOoxidationunderlowtemperature.Inthecaseo
2、fthecomplexation--combustionmethod,boththepHvalue(1,4,7,9,11)intheprecursorsolutionandtheratioofCo/CeshowedstronginfluenceonthecatalyticactivityinC0oxidation.AseriesofCoOx/Ce02catalystspreparedbyCo-precipitationusingdifferentconcentrationofKOH,ThesamplepreparedinthelowestconcentrationofKOHe
3、xhibitedthebestactivityAseriesofCoOx/Ce02catalystspreparedinTeflon-·lindestainless--steelavtoclaveusingdifferentconcentrationofKOH.ThelowestconcentrationofKOHexhibitedthebestactivity.Inthispreparationprocess,theinfluenceofreactiontemperatureonthecatalyticactivityofthesampleswasstudied.ItWas
4、foundthatthesamplepreparedat80。Cexhibitedthebestactivityduetothesmallparticlesizeandgoodredoxproperty.AseriesofCoOx/Ce02catalystsweresynthesizedthroughsolvothermalprocessandimpregnation.CoOx/Ce02synthesizedinsolvothermalprocessusingCH3CH20H,CH20H—CH20HandH20ascappingagents,exhibitedthebesta
5、ctivity.Deposition-precipitationmethodwasusedtoprepareAu/Ce02catalysts.Theeffectofpreparationconditionandsupportonthecatalystactivitywereinvestigated.TheBET,X—raydiffractionandTemperature-programmedreduction(TPR)werecarriedouttoanalyzethefactorsaboutthecatalyticactivity.Theresultsshowedthat
6、thevolumofKOHandthepropertyofsupportscouldaffecttheinteractionbetweensupportsandgoldspecies,whichaffectedthecatalyticactivity.KeyWords:CoOJCc02;Au/Ce02;COoxidation;preparation—Il-一,I^i≯●0●●舻,●●●,蚤辽宁师范大学硕士学位论文目录摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯IAbstract⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
7、⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..II.弓I言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯..11文献综述⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.2,.,1.1CO催化氧化的应用背景⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21.1.1CO完全氧化⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21.1.2CO选择氧化⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯21.2CO催化氧化的催化剂发展⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
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