甲烷為燃料的itsofc陽極電催化劑的研究

1、東南大學(xué)碩士學(xué)位論文甲烷為燃料的ITSOFC陽極電催化劑的研究姓名：謝吉虹申請學(xué)位級別：碩士專業(yè)：材料物理與化學(xué)指導(dǎo)教師：孫岳明20070601東南大學(xué)碩士學(xué)位論文ABSTRACTMaster：XieJihongMentor：ProfesserSunYuemingUniversity：SoutheastUniversityDrectlyueshydrocarbon∞fuelisoneofdevelopmentprogressofSOFC

2、Recentlyasthedopedeeria(DCO)havebeensuccessfullyusedaslatemodelelectrolyteofSOFC，anodewhichcallbesuitedwithDC0havebeenresearched硼belectrocatalystforSOFC謝lhdirectoxidationofmethaneatanodeWasdesignedprepared，characterizeda

3、nditsactivitywasevaluatedGlycinenitrateProcess(GNP)wereappliedtopreparefourdifferentrareearthelements(SmTb，Tb，Nd)dopedceriaelectroeatalyst；Smdopedceria(SDC)誦mdifferentCucontentelectrocalystandSDCwithdifferentC“C0ratioele

4、ctrocalystTostudythecatalystsindetailthecatalystsWascharacterizedandanalyzedbyDSC，rGA，ⅪID，SEM，aswellasSEM111eDSC／TGAresultsshowtheheatdecompose，erystalloidtemparetureofcatalystspreparedbyGNPincalcineprocessandthecalcinet

5、echnicsconditionWasascertainedXRDpatternshowthedopedccria(DC@catalystformedthefluoritestructureperfectlyinlowtemparetureandthesoleoxidedoesnotexistTheeffectofcalcinetimeandtempareturehadbeenresearch，itshowsthatthesizeofc

6、rystallatticincreasedifcalcinedtompatrtureincreasedorcaltinedtimeiIlcrea$edHoweveriftheealcluedtempatrturewastoo10WorthecalcilledtimeiSnotenoughcatalystwouldnotformthefluoriteTheresultshowsthatcalcinedin973Kfor4hoursisth

7、ebestSeconditalsoshowsthatthestrctllreoffluoriteofceriadoesnotchangewithSm，Tb，YborNddopedandCu，CocontentThefluoriteofDCOWassteadySEMshowsthecatalystspreparedbyGNPmethodhaveproperporosityandsurfacealeaandCanprovideactivec

8、enter幻improvethetotaloxidationofmethaneThecoshfiguremaybethecauseofbetterporousofSDCparticleCuCobimettalicsinSDCWascharacterizedbyTPR，itshowsthatthedeoxidizedtemperaturemovedtowardshi曲temperaturewiththeincreasecontentofC

9、o，CoWasdeoxidizedatlowtemperatureastheexistenceofCuoitimprovetheactivityofcatalystatlowtemperatureBesides，sinceCoWascoatedbyCu，theredundantCuwouldinfluencethedeoxidizationofCowhiehwoulddecreastheactivityofcatalystTheeffe

10、ctofcompositionontheactivityandseleetivitywasevaluatedaccordingtothereactionconditionTheresuItsshowCuCobimetallieinSDCiStheoptimumelectrocatalystforanodeofSOFCforitshowsthebesttotaloxidationacitivityAndtheactivityoftheca