用共沉淀法制备了镧系六铝酸盐LaMnx Al12xO19(x=0、1、2、3、4、5、6)催化剂,通过X射线衍射、差热分析、扫描电镜和比表面积分析等实验技术及甲烷催化燃烧,对催化剂的结构和性质进行了考察.研究了锰离子掺杂对催化剂结构以及甲烷催化燃烧活性的影响.结果表明,催化剂在1200℃焙烧后可以形成完整的六铝酸盐晶型,且具有较高的催化性能和高温稳定性,不同含量的Mn离子掺杂对催化剂的比表面积和活性有较大的影响.LaMn2 Al10 O19催化剂具有较好的活性,其起燃温度(T10％/℃)为506℃,完全转化温度(T90％/℃)为696℃.
参考文献
| [1] | Seongmin Kim;Dae-Won Lee;Joon Yeob Lee .Catalytic combustion of methane in simulated PSA offgas over Mn-substituted La-Sr-hexaaluminate (La_xSr_(1-x)MnAl_(11)O_(19))[J].Journal of molecular catalysis, A. Chemical,2011(1/2):60-64. |
| [2] | 郑建东,任晓光,宋永吉,沈国良.温度对共沉淀法制备LaMnAl11O19催化剂的影响[J].燃料化学学报,2007(01):117-120. |
| [3] | Experiment on the effect of Pt-catalyst on the characteristics of a small heat-regenerative CH_4-air premixed combustor[J].Applied energy,2010(11):3409-3416. |
| [4] | BAI ShouLi,WANG LiangShi,SHI BingJie,YANG PengCheng,CUI MeiSheng,LONG ZhiQi,LI DianQing,CHEN AiFan.Synthesis of hexaaluminate catalysts for methane combustion by reverse microemulsion medium[J].中国科学B辑(英文版),2009(01):31-38. |
| [5] | Masato Machida;Koichi Eguchi;Hiromichi Arai .Effect of additives on the surface area of oxide supports for catalytic combustion[J].Journal of Catalysis,1987,103(02):385. |
| [6] | 郑建东,任晓光,宋永吉,于君英,沈国良.碳酸铵加入量对共沉淀法制备LaMnAl11O19-δ催化剂的影响[J].稀土,2007(05):40-44. |
| [7] | Xiaoyu Yan;Roy J. Crookes .Energy demand and emissions from road transportation vehicles in China[J].Progress in energy and combustion science,2010(6):651-676. |
| [8] | YU Qian;YU Lin;WANG Yuanna .Effect of Preparation Methods on Activation of Catalysts BaNi_(0.2)Mn_(0.8)Al_(11)O_(19-δ) for Dimethyl Ether Combustion[J].Chinese Journal of Chemical Engineering,2008(3):389-393. |
| [9] | 蒋政,侯红霞,郝郑平,康守方,李进军,胡春.La促进型六铝酸盐Ba1-xLaxFeAl11O19-δ催化甲烷燃烧性能[J].物理化学学报,2004(11):1313-1319. |
| [10] | 王军威,徐金光,田志坚,徐云鹏,徐竹生,林励吾.Ba、Mn对Al2O3热稳定性和甲烷催化燃烧活性的影响[J].物理化学学报,2002(11):1018-1022. |
| [11] | Jang B W L;Nelson R M;James et al.Catalytic oxidation of methane over hexaaluminates and hexaluminate-supported Pd catalysts[J].Catalysis Today,1999,47(1 4):103. |
| [12] | Groppi G;Bellotto M;Cristiam C .Preparation and characterization of hexaaluminate-based materials for catalytic combustion[J].Applied Catalysis A:General,1993,104(02):101. |
| [13] | Naoufal D.;Garbowski E.;Brulle Y.;Primet M.;Millet JM. .Synthesis, structure and catalytic properties of Fe-substituted barium hexaaluminates[J].Catalysis Letters,1998(3):141-148. |
| [14] | Xiao Lihua;Sun Kunpeng;Yang Yuxia et al.Low-temperature combustion of CH4 over CeO2MOx solid solution (M=Zr4+,La3+,Ca2+ or Mg2+) promoted Pd/γ-alumina catalysts[J].Catalysis Letters,2004,95(3-4):151. |
| [15] | Artizzu-Duart P;Brullé Y;Gaillard F .Catalytic combustion of methane over copper and manganese substituted barium hexaaluminates[J].Catalysis Today,1999,54(01):181. |
| [16] | 郑建东,任晓光.水含量对醇盐水解制备LaMnAl11O19-δ催化剂结构及其甲烷燃烧性能的影响[J].稀土,2011(06):27-31. |
| [17] | Moon Hee Han;Young Soo Ahn;Si Kyung Kim;Sun ki Shon;Sung Kyu Kang;Sung Jane Cho .Synthesis of manganese substituted hexaaluminate and its fabrication into monolithic honeycombs for catalytic combustion[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2001(2):286-293. |
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