TiO2納米管負載錳的低溫脫硝性能研究.pdf

1、南京理工大學碩士學位論文TiO2納米管負載錳的低溫脫硝性能研究姓名：姚瑤申請學位級別：碩士專業(yè)：環(huán)境工程指導教師：鐘秦20120320碩士論文Ti02納米管負載錳的低溫脫硝性能研究AbstractSelectivecatalyticreduction(SCR)isoneofthemostwidelyusedmethodsofabatementofNOxSCRatlowtemperatureCallsolvetheissueofindus

2、trialcatalystgettingerosionandimpuritypollutionbyflyashcausedbySCRreactorusuallyplacedbeforetheelectrostaticprecipitatorItcallalsoavoidcatalystpoisoningandsimplifytheSCRsystemeasilyLargestudyindicatesthatmanganesehasagoo

3、dSCRactivityatlowtemperatureInthisinvestigation，thepreparation，characterizationandpertinencyofTi02nanotubesandMnOx／TiNTcatalystswerestudiedTheSCRactivityatlowtemperatureandinfluencedbyH20，S02werediscussedAtthesanletime，t

4、hedenitrificationkineticsofMnOx／TiNTwasresearchedThiswillprovidevaluablereferencegisttotheapplicationofSCRcatalystatlowtemperatureFirstlyTi02nanotubesweresynthesizedbyhydrothermalmethodTEM，BETXRD，TGRamargFTIRwereusedtoch

5、aracterizethemorphologyandstructureofTi02nanotubesTheresultsshowedthathydrothermalsynthesizedtitaniumnanotubeswereamorphoustitanate塒thdisordered，layeredhollowtubularstructureandspecificsurfaceareaof36989m2g～After400oCcal

6、cination(denotedasTINT)，nanotubehollowtubularstructurewasstilllayeredandtypicalstructurechangedtoanataseTi02withlowerBETof28061m2蛋1After500oCcalcinationthestructureofnanotubesWasgraduallydestroyedandBETdecreasedto20534m2

7、礦After700occalcinationthetubularstructuredisappearedtonanorodsandthecrystallatticechangedtufflephase，BETdropedto12809m2分1Secondl5aseriesdifferentMnOxloadingofMnOx／TiNTwerepreparedbyimpregnatedmethodTEM，XRD，BETPL，EPR，XPSs

8、howedthatcatalystswereanataseandallkeepingtubularstructureSpecificsurfaceareawaslowerthanTiNTbecauseofloadingMnOxManganeseparticleswerehighlydispersedonthewallofTi02nanotubesandwithoutdiffractiveapexofMnOxWhenMnOxloading

9、exceeded15％，aweakdiffractionpeakofMn02wasfoundThepresenceofoxygenvacanciesonMnOx／TiNTcatalystscouldincreasetheamountofchemistryadsorptionoxygen，whichhadaroleofpromotingthecatalyticactivityFurthermore，underthereactioncond