A novel catalytic material La0.9Sr0.1MnO3and tourmaline compound catalytic material wassynthesized in the base of traditional catalytic material La0.9Sr0.1MnO3 which exhibited excellent catalytic activity for methane combustion. Different contents of tourma-line were added to give a series of La0.9Sr0.1MnO3 and tourmaline catalytic material through a sol-gel method. Samples above were char-acterized and analyzed by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Teller method (BET), temperature programmedreduction(TPR), catalytic activity test and contact angle test.The as-preparedsamplewith 2% (m/m) tourmaline showed good homogeneity surface morphology and displayed the optimal catalytic activity. The light-off temperature re-duced by 10 oC and theT90 decreased by 15 oC. In addition, the mechanism of the reinforcement of catalytic activity was explored.
参考文献
| [1] | Klingstedt F;Neyestanaki A K;Byggningsbacka R;Lind-fors L-E, Lundén M, Petersson M, Tengstr?m P .Palla-dium based catalysts for exhaust aftertreatment of natural gas powered vehicles and biofuel combustion[J].Appl Catal A,2001,209(01):301. |
| [2] | SHEN Meiqing,ZHAO Zhen,CHEN Jiahao,SU Yugeng,WANG Jun,WANG Xinquan.Effects of calcium substitute in LaMnO3 perovskites for NO catalytic oxidation[J].稀土学报（英文版）,2013(02):119-123. |
| [3] | ZHAI Yanqing,XIONG Jieming,LI Cuiqing,XU Xin,LUO Guohua.Influence of preparation method on performance of a metal supported perovskite catalyst for combustion of methane[J].稀土学报（英文版）,2010(01):54-58. |
| [4] | Voorhoeve R J H;Remeika J P;Freeland P E;Matthias B T .Rare-earth oxides of manganese and cobalt rival plati-num for the treatment of carbon monoxide in auto exhaust[J].SCIENCE,1972,177(4046):353. |
| [5] | K.Rida,M.A.Pe(n)a,E.Sastre,A.Martínez-Arias.Effect of calcination temperature on structural properties and catalytic activity in oxidation reactions of LaNiO3 perovskite prepared by Pechini method[J].稀土学报（英文版）,2012(03):210-216. |
| [6] | Huízar-Félix A M;Hernández T;de la Parra S;Ibarra J Kharisov B .Sol-gel based Pechini method synthesis and characterization of Sm1-xCaxFeO3 perovskite 0.1≤x≤0 5[J].Powder Technol,2012,229:290. |
| [7] | SHEN Hui,XU Jiayue,WU Anhua.Preparation and characterization of perovskite REFeO3 nanocrystalline powders[J].稀土学报（英文版）,2010(03):416-419. |
| [8] | Guojun Zou,Zhonglai Wang,Mingjuan Sun,Xu Luo,Xiaolai Wang.A novel solid-gas process to synthesize LaMnO3 perovskite with high surface area and excellent activity for methane combustion[J].天然气化学（英文版）,2011(03):294-298. |
| [9] | Arandiyan H;Chang H Z;Liu C X;Peng Y, Li J H .Dex-trose-aided hydrothermal preparation with large surface area on 1D single-crystalline perovskite La0.5Sr0.5CoO3 nanowires without template：Highly catalytic activity for methane combustion[J].J Mol Catal A,2013,378:299. |
| [10] | Shimokawa H;Kusaba H;Einaga H;Teraokia Y .Effect of surface area of La-K-Mn-O perovskite catalysts on diesel particulate oxidation[J].Catalysis Today,2008,139(1-2):8. |
| [11] | Liu B;Chen Z;Wang Y X;Wang X N .The effect of an electric field on the mechanical properties and microstruc-ture of Al-Li alloy containing Ce[J].Mater Sci Eng A,2001,313:69. |
| [12] | Kubo T .Interface activity of water given rise by tourma-line[J].SOLID STATE PHYSICS-ADVANCES IN RESEARCH AND APPLICATIONS,1989,24(12):108. |
| [13] | Liang J S;Meng J P;Zhu D B;Ding Y Liu Z G .Effects of thermal treatment on surface free energy of tourmaline power[J].J Chin Soc Rare Earths(in Chin ),2008,36(02):257. |
| [14] | Zhang J X;He H;Dai H X;Zi X H .Effects of CeO2 sub-stitute in PdO fiber catalyst for methane catalytic oxidation[J].J Chin Soc Rare Earths(in Chin ),2006,24:24. |
| [15] | Levasseur B;Kaliaguine S .Methanol oxidation on LaBO3(B=Co, Mn, Fe)perovskite-type catalysts prepared by re-active grinding[J].Appl Catal A,2008,343(01):29. |
| [16] | Cimino S;Lisi L;De Rossi S;Faticanti M, Porta P .Meth-ane combustion and CO oxidation on LaAl1-xMnxO3 perovskite-type oxide solid solutions[J].Appl Catal B,2003,43(04):397. |
| [17] | Ciambelli P;Cimino S;De Rossi S;Faticanti M, Lisi L, Minelli G, Pettiti I, Porta P, Russo G, Turco M .AMnO3(A=La, Nd, Sm)and Sm1-xSrxMnO3 perovskites as com-bustion catalysts:structural, redox and catalytic properties[J].Appl Catal B,2000,24(03):243. |
| [18] | M.A.Pena;J.L.G.Fierro .Chemical structures and performance of perovskite oxides[J].Chemical Reviews,2001(7):1981-2017. |
| [19] | Civera A;Negro G;Specchia S;Saracco G Specchia V .Optimal compositional and structural design of a LaMnO3/ZrO2/Pd-based catalyst for methane combustion[J].Catalysis Today,2005,100:275. |
| [20] | Oh S H;Mitchell P J;Siewert R M .Catalytic control of air pollution[J].ACS SYMPOSIUM SERIES,1992,12:495. |
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