一个新的满足未来排放标准的摩托车尾气净化催化剂-论文.pdf

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1、ChineseJournalofCatalysis35(2014]1482—1491催化学报2014年第35卷g9期1www．chxb．cnww$cie棼dire《t_eloScnceDireCt：_}蓬}§el蘸釜躐，，琶njArticleAnewmonolithicPt-Pd--RhmotorcycleexhaustcatalysttomeetfutureemissionstandardsSuningWang，YajuanCui，LiLan，ZhonghuaShib，MingZhaob，MaochuGongb，Ruim

2、eiFang，SijieChenb．YaoqiangChenJb，aCollegeofChemicalEngineering,SichuanUniversity,Chengdu61006~Sichuan,ChinabKeyLaboratoryofGreenChem&try＆TechnologyofMinistryofEduca~on,ColegeofChemistry,SichuanUniversity,Chengdu610064,Sichuan,ChinaARTICLEINF0ABSTRACTArO'clehistory

3、：Anewcompositeoxidematerialassupport,CeOz-Zr02-La203-PrO2·AI20s，wassynthesizedbyaReceived26January2014co．precipitationmethod．Pd-Rh，Pt-Rh，andPt-Pd-RhsupportedonmonolithiccarriercatalystswereAccepted21March2014obtainedbyanimpregnationroute．Thetextural，structural，and

4、reductivepropertiesofthecata-Published20September2014lystswerecharacterizedbyN2adsorption-desorption，temperature-programmedreduction，oxygenstoragecapacitymeasurements，andX-raydiffraction．Theair-fuel—ratio[A／F)，spacevelocity(SV)，andtemperaturecharacteristicsofthefl

5、eshandagedcatalystswereinvestigatedonasystematicKeywords：basis．Theresultsshowedthatamongthethreecatalysts．Pt-Pd-Rhdisplayedthebestperformance．MotorcycleexhaustpurificationForanSVof40000h一1inthecaseoffreshPt-Pd-Rh，thelight-oftemperaturesf0)forC3HB，CO，Monolithiccata

6、lystandNOwere239，187，and191。C，respectively,withcorrespondingAT(Tgo—Ts0)valuesof21，3，Pt—Pd—Rhand3。C，respectively．Afteraging,theTs0forC3H8，CO，andNOwere298，203，and223。Crespec—Air_t0fuelratiocharacterjstictively,andtheATvalueswere22，5，and13。C，respectively．Moreover，the

7、windowwidthsfortheSpacevelocitycharacteristicA／FinthecaseoffreshandagedPt-Pd-Rhcatalystswerewide．Overall，theexcellentperformanceTemperaturecharacteristicforthePt-Pd—Rhcatalystmakesitsuitableasamotorcycleexhaustcatalyst,whichcanmeetfutureemissionstandards．@2014，Dal

8、ianInstituteofChemicalPhysics，ChineseAcademyofSciences．PublishedbyElsevierB．A1Jrightsreserved．1．1ntroductiontion,whichareharmfultohealth．Therefore，itisi