氧化铈担载活泼金属催化剂上CO催化氧化的分析

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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⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯