采用真空浸渍法制备了多孔莫来石纤维陶瓷负载La1-xSrxCoO3(x=0.2、0.4、0.6、0.8)钙钛矿型催化剂.利用XRD、SEM、BET等对样品进行了表征.通过XRD发现,所制备的La1-xSrxCoO3催化剂除了存在典型的钙钛矿结构外,图谱中还发现了La(OH)3峰,而且随着x值的减小La(OH)3的衍射峰越来越尖锐.由SEM可以观察到载体具有立体网状结构并且负载在载体上的催化剂颗粒分散性较好.BET表明随着x增加,比表面积相应增加.利用一氧化氮(NO)和一氧化碳(CO)对所制备的La1-xSrxCoO3系列载体催化剂的催化活性进行了测试比较,发现当Sr取代量为x=0.2时,La1-xSrxCoO3整体催化活性较好.
参考文献
[1] | Lndqvist K,Liden E.J.Eur.Ceram.Soc,1997,17:359-366. |
[2] | Luyten J,Cooymans J,Smolders C,et al.J.Eur.Ceram.Soc.,1997,17:273-279. |
[3] | Aksay I,Dabbs D M,Sarikaya M.J.Am.Ceram.Soc.,1991,74:2343-2358. |
[4] | Terpatra R A,Bonekamp B C,Veringa H J.Desalination,1988,70:395-404. |
[5] | Sepulveda P.Am.Ceram.Soc.Bull.,1997,76 (10):61-65. |
[6] | Voorhoere R J H.Science,1972,177:353-356. |
[7] | Voorhoeve R J H.in J.J.Burton,R.C.Carter(eds.),Perovskite related oxides as oxidation-reduction catalysts in advanced materials in Catalysis,Academic Press,New York:1977. |
[8] | Sorenson S C,Wronkiewicz J A,Sic L B,et al.Bull.Am.Ceram.Soc.,1974,53:446-449. |
[9] | Gallagher P K,Johnson D W,Remeika Jr J P,et al.Mat.Res.Bull,1975,10:529-538. |
[10] | Olivan A M O,Pena M A,Tejuca L G,et al.J.Mol.Catal,1988,45:355-363. |
[11] | Tascon J M D,Tejuca L G,Rochester C H.J.Catal,1985,95:558-566. |
[12] | Nagasubramanian G,Viswanathan W,Sastri M V C.Ind.J.Chem.A,1978,16:642-644. |
[13] | Lindstedt A,Stromberg D,Milh M A.Appl.Catal A:Gen,1994,116:109-126. |
[14] | Nitadori T,Kurihara S,Misono M.J.Catal,1986,98:221-228. |
[15] | Nakamura T,Misono M,Yoneda Y.Bull.Chem.Soc.Jpn,1982,55:394-399. |
[16] | Irusta S,Pina M P,Menendez M,et al.J.Catal,1998,179:400-412. |
[17] | Phelan D,Louca D,Rosenkranz S,et al.Phys.Rev.Lett.,2006,96:1-4. |
[18] | 杨小毛,罗来涛,钟华(YANG Xiao-Mao,et al).无机材料学报(Journal of Inorganic Materials),2005,20(2):413-418. |
[19] | Yamazoe N,Teraoka Y,Seiyama T.Chemistry Letters,1981,12:1767-1770. |
[20] | Nakamura T,Misono M,Uchijima T,et al.Nippon Kagaku Kaishi,1980,11:1679-1684. |
[21] | Ferri D,Forni L.Appl.Catal.B:Envir,1998,38:119-126. |
[22] | Teraoka Y,Harada T,Kagawa S.J.Chem.Soc.Faraday.Trans,1998,94 (13):1887-1891. |
[23] | Ladavos A K,Pomonis P J.Appl.Catal.A:Gen,1997,165:73-85. |
[24] | Ladavos A K,Pomonis P J.Appl.Catal.B:Envir,1992,1:101-116. |
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