還原脫硫催化劑的TPD研究.pdf

1、天津大學(xué)碩士學(xué)位論文還原脫硫催化劑的TPD研究姓名：潘志爽申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：工業(yè)催化指導(dǎo)教師：馬智20070601ABSTRACTWiththedevelopmentofmodemindustryalargemountofS02inducingthemoreandmoreseriousacidrainisemittedbyallkindsofpollutionSOUrCesAllgovernmentsandenterprisesa

2、repayinggreatattentiontothetreatmentoftheseharmfulgasesThemethodusingCOcatalyticreductionofS02hasmanyadvantagesoverothersHoweverthereisstillsomedistancefromthepracticalapplicationThegascontainsacertainamountofoxygen，whic

3、hcausedthedeactivationofthecatalystsHowtOobtainhighlyselectivecatalystsbecomesextremelyimportantInthispaperWetakeCO、S02and02asadsorptionqualities，andtaketheadvantageoftheTPDtechniquetostudytheadsorptionenergyondifferentc

4、atalystssuchasOxides，sulphidesandperovskiteComparingtheO1lVeofactivitywithdesorptionenergysomeresultsareattainedasfollows：StatesofNiaffectstheCOadsorptioncapacitygreatlyWhenchangingNioxideintosulfide，theadsorptionstrengt

5、hofCObecomesweakerTheadsorptionstrengthistheweakestforperovskiteTheadsorptionstrengthisinfirmlyaffectedbyStatesofFeandCoWhenCoisintheformofoxides，adsorptionintensityofsulfurdioxideisthestrongestWhenintheformoftheperovski

6、testructure，adsorptionintensityisinthedeclineAdsorptionintensityisthelowestinastateofsulfideFeandNiaresimilartoCoStatesofFeinfluencethe02adsorptioncapacitygreatlyWhenFeoxidetransferredintosulfide，theadsorptionstrengthof0

7、2becomeslowerTheadsorptionstrengthisthelowestforperovskiteTheadsorptionstrengthisaffectedbyStatesofFeandCoseriouslyWhentheenergystateofCOisfrom460。Cto800。CandthatofS02from447“Cto800。C，thecatalystcanreduceS02withCOTheclos