纳米La-Mn-O钙钛矿型氧化物催化剂上柴油机尾气碳颗粒催

50420052336*(,102249;,102617.*,E-mail:[e-mail])La1−xMxMnO3(M=Li,Na,K,Rb;x=0,0.10,0.25).X(XRD)(FT-IR)La1−xMxMnO3;.,LaMnO3La3+,,x=0.25,K,,,285~430,Pt.,,,..CO2,.,150~450,,550[1],,.LaMnO3,A,LaMnO3A,Mn.11.1La,Mn(Li,Na,K,Rb),,,,8006h,La1−xMxMnO3.Pt/SiO2Pt1%(),H2PtCl4·6H2O,[2].1.2()X.XRD-6000XX,ABO3,:CuKα,40kV,30mA,15°~70°,8°/min.().FTS-3000(Digilab),KBr,6000~400cm−1,2cm−1.()BET.S-5200S-4300.BETASAP2010.1.3,.6mm,,2/min.Degussa.100mg,.101,,.,:NO,2000µL/L;O2,5%(),He,200mL/min.50420052PorapakQCO2N2O,5AN2,NO,NO2CO,SP-3420.(Tig)(Tm)(Tf).,CO(5%),CO,CO2.,TigTfCO2,TigCO2,TfCO2.TmCO2.22.1XRD1La1−xMxMnO3(M=Li,K;x=0,0.10,0.25)XRD.XRDLaMnO3[3,4],La1−xMx-MnO3,La1−xLixMnO3,Li+,La3+,LaMnO3,.1La1-xMxMnO3XRD1,LaMnO3;2,La0.90Li0.10MnO3;3,La0.75Li0.25MoO3;4,La0.90K0.10MnO3;5,La0.75K0.25MnO32.2FT-IRLa1−xMxMnO3MnO6,MnO6A,6[5],Mn-Ov3600cm−1.2,LaMnO3A,x=0.1,600cm−1Mn-Ov3,,ALa,Mn3+Mn4+,MnO,MnO63MnOMnO6[6].(K),x=0.25,600cm−1,.2La1−xMxMnO31,LaMnO3;2,La0.90Li0.10MnO3;3,La0.75Li0.25MnO3;4,La0.90Na0.10MnO3;5,La0.75Na0.25MnO3;6,La0.90K0.10MnO3;7,La0.75K0.25MnO3;8,La0.90Rb0.10MnO3;9,La0.75Rb0.25MnO32.33LaMnO3La0.75K0.25MnO3.3,K+LaMnO3La3+,,50nm.3(c),La0.75K0.25-MnO33,,50nm.1.La1−xMxMnO3,BET11~21m2/g.,La0.75K0.25MnO3,BET,.2.4LaMnO34CO2.4(a),M+(M=Li,Na,K,Rb)LaMnO3La3+,Mn4+,,,x=0.10,Tig36~42,Tm35~52,Tf36~48,(a)LaMnO3;(b)La0.75K0.25MnO3();(c)La0.75K0.25MnO3(3)1SA/m2·g−1Tig/Tm/Tf/LaMnO312.7336.6432.0497.1La0.90Li0.10MnO321.9300.8390.0457.7La0.75Li0.25MnO316.5311.2397.0458.8La0.90Na0.10MnO314.6294.1386.0461.0La0.75Na0.25MnO312.2294.1360.0427.0La0.90K0.10MnO311.7309.6390.0457.6La0.75K0.25MnO316.7284.6348.0429.9La0.90Rb0.10MnO313.3293.5375.0449.0La0.75Rb0.25MnO311.1288.2366.0446.0La0.75K0.25MnO3a)15.4286.5352.0445.0La0.75K0.25MnO3b)14.6287.3355.0451.0La0.75K0.25MnO3c)12.6288.8365.0451.5Pt/SiO2307.8336.5437.0501.0338),b),c)1,2,3La0.75K0.25MnO34CO2(a)x=0.10;(b)x=0.25.,La1−xLixMnO3;,La1−xNaxMnO3;,La1−xKxMnO3;,La1−xPbxMnO3RbNaKLi,1.,x=0.25,Li,,K,,Tig284.6,Tm348.0,Tf429.9,[2]Pt.1,,1%Pt/SiO2La1−xMxMnO3.H2OSO2,H2OSO2Pt,[2,7].56La0.75K0.25MnO31,2,3.5,,La0.75K0.25-MnO31000cm−1,1380cm−1.,La0.75K0.25MnO3.61,La0.75K0.25MnO33,Tig,TmTf10().Tig,;TmTf.,3(c)La0.75K0.25MnO3,TmTfTig.,.ABO3,,B,AB.LaMnO3,+1ALa3+,BMn3+[8].,,504200525La0.75K0.25MnO31,1;2,2;3,36La0.75K0.25MnO33TPR,1;,2;,3Mn4+,.,,B,341-12233++3+4+3LaMMnMnOLaMnOLaM2MnMnxxxxxx++−++⎯⎯→′′i,,3+1-33++3LaMλ(Vo)MnOLaMnOLaMλOxxxλ−++⎯⎯→′′ii,La1-xMxMnO3,M+La3+,,:,La3+M+,Mn3+Mn4+;Mn4+Mn3;,La1−xMxMnO3,,[9];,,,,,,,.3(1)La1−xMxMnO3.(2)LaMnO3La3+,La1−x-MxMnO3,.(3)x=0.25,K,,,285~430,[2]Pt.(:20473053).1LiuZM,HaoZP,ZhangHP,etal.Studyofperovskite-typeox-idesandtheirsupportedAgderivativesforcatalyticoxidationofdieselsoot.JournalofChemicalTechnologyandBiotechnology,2002,77:800~804[DOI]2Oi-UchisawaJ,ObuchiA,ZhaoZ,etal.Carbonoxidationwithplatinumsupportedcatalysts.AppliedCatalysisB:Environmental,1998,18:L183~L187[DOI]3TeraokaY,KanadaK,KagawaS.SynthesisofLa-K-Mn-Operovskite-typeoxidesandtheircatalyticpropertyforsimultane-ousremovalofNOxanddieselsootparticulates.AppliedCataly-sisB:Environmental,2001,34:73~78[DOI]4,,..,2003,19(10):1145~11485LiKB,LiXJ,ZhuKG,etal.InfraredabsorptionspectraofmanganeseoxidesLa1−x−yRyCaxMnO3−δ.JApplPhys,1997,81(10):6943~6947[DOI]6,,,.La0.67SrxMnO3−δ.(),2000,24(2):61~647Oi-UchisawaJ,ObuchiA,EnomotoR,etal.OxidationofcarbonblackovervariousPt/MOx/SiCcatalysts.AppliedCatalysisB:Environmental,2001,32:257~268[DOI]8ZhaoZ,YangXG,WuY.DirectdecompositionofNOoverthemixedoxidecatalystsNd2−xSrxNiO4λ.ChineseScienceBulletin,1996,41(11):904~9099ZhaoZ,YangY,WuY.Comparativestudyofnickel-basedperovskite-likemixedoxidecatalystsfordirectdecompositionofNO.AppliedCatalysisB:Environmental,1996,8:281~297[DOI](2004-08-20,2004-12-01)