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催化学报  2014 

(La0.8A0.2)MnO3(A=Sr,K)perovskitecatalystsforNOandC10H22oxidationandselectivereductionofNObyC10H22

DOI: 10.1016/S1872-2067(14)60173-X, PP. 1299-1304

Keywords: LaMnO3substitutedperovskite,Nitrogenoxideoxidation,Decaneoxidation,Hydrocarbons-selectivecatalyticreduction

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Abstract:

?Inthiswork,westudiedthecatalyticactivityofLaMnO3and(La0.8A0.2)MnO3(A=Sr,K)perovskitecatalystsforoxidationofNOandC10H22andselectivereductionofNObyC10H22.Thecatalyticperformancesoftheseperovskiteswerecomparedwiththatofa2wt%Pt/SiO2catalyst.TheLasitesubstitutionincreasedthecatalyticpropertiesforNOorC10H22oxidationcomparedwiththenon-substitutedLaMnO3sample.Forthemostefficientperovskitecatalyst,(La0.8Sr0.2)MnO3,theresultsshowedthepresenceoftwotemperaturedomainsforNOadsorption:(1)adomaincorrespondingtoweaklyadsorbedNO,desorbingattemperatureslowerthan270℃and(2)aseconddomaincorrespondingtoNOadsorbedonthesurfaceasnitratespecies,desorbingattemperatureshigherthan330℃.FortheSr-substitutedperovskite,themaximumNO2yieldof80%wasobservedintheintermediatetemperaturedomain(around285℃).InthereactantmixtureofNO/C10H22/O2/H2O/He,(La0.8Sr0.2)MnO3perovskiteshowedbetterperformancethanthe2wt%Pt/SiO2catalyst:NO2yieldsreaching50%and36%at290and370℃,respectively.ThisactivityimprovementwasfoundtobebecauseofatomicscaleinteractionsbetweentheAandBactivesites,Sr2+cationandMn4+/Mn3+redoxcouple.Thus,(La0.8Sr0.2)MnO3perovskitecouldbeanalternativefreenoblemetalcatalystforexhaustgasaftertreatment.

References

[1]  Barrett S. Oxf Rev Econ Policy, 1998, 14: 20
[2]  Lenaers G. Sci Total Environ, 1996, 189-190: 139
[3]  Kaspar J, Fornasiero P, Hickey N. Catal Today, 2003, 77: 419
[4]  Otto K, Shelef M, Kummer J T. J Phys Chem, 1970, 74: 2690
[5]  Burch R, Breen J P, Meunier F C. Appl Catal B, 2002, 39: 283
[6]  Zhang C H, Hua W C, Wang C, Guo Y L, Guo Y, Lu G Z, Baylet A, Giroir-Fendler A. Appl Catal B, 2013, 134-135: 310
[7]  Zhang C H, Guo Y L, Guo Y, Lu G Z, Boreave A, Retailleau L, Baylet A, Giroir-Fendler A. Appl Catal B, 2014, 148-149: 490
[8]  Voorhoeve, R J H,Johnson, D W,Remeika, J P,Gallagher, P K. Sci-ence,195: 827
[9]  Berger D, Fruth V, Jitaru I, Schoonman J. Mater Lett, 2004, 58: 2418
[10]  Denton P, Giroir-Fendler A, Praliaud H, Primet M. J Catal, 2000, 189: 410
[11]  Wu X D, Xu L H, Weng D. Catal Today, 2004, 90: 199
[12]  Rida K, Benabbas A, Bouremmad F, Pena M A, Mart?nez-Arias A. Catal Commun, 2006, 7: 963
[13]  Takahashi N, Shinjoh H, Iijima T, Suzuki T, Yamazaki K, Yokota K, Suzuki H, Miyoshi N, Matsumoto S I, Tanizawa T, Tanaka T, Tateishi S S, Kasahara K. Catal Today, 1996, 27: 63
[14]  Baylet A, Royer S, Labrugère C, Valencia H, Marécot P, Tatibou?t J M, Duprez D. Phys Chem Chem Phys, 2008, 10: 5983
[15]  Grubb M, Vrolijk C, Brack D. The Kyoto Protocol: A Guide and assessment. London: Earthscan in Cooperation with Royal Institute of International Affairs, 1999. 281
[16]  Royer S, Berube F, Kaliaguine S. Appl Catal A, 2005, 282: 273
[17]  Zhang C H, Wang C, Zhan W C, Guo Y L, Guo Y, Lu G Z, Baylet A, Giroir-Fendler A. Appl Catal B, 2013, 129: 509
[18]  Tabata K, Hirano Y, Suzuki E. Appl Catal A, 1998, 170: 245

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