Effect of La3+ substituting Ba2+ on the structure and methane combustion activity of Ba1-xLaxMn3Al9O19-alpha catalysts
文献类型：期刊论文
| 作者 | Xu, JG; Tian, ZJ; Zhang, PQ; Qu, XH; Xu, YP; Xu, ZS; Lin, LW |
| 刊名 | chemical journal of chinese universities-chinese
 |
| 出版日期 | 2005-11-10 |
| 卷号 | 26期号:11页码:2103-2107 |
| 关键词 | methane catalytic combustion hexaaluminate hydrothermal synthesis urea |
| 英文摘要 | mn-substituted hexaaluminate(ba1-xlaxmn3al9o19-alpha) catalysts were prepared by hydrothermal synthesis based on hydrolysis of urea. effect of la3+ substituting ba2+ on phase compositions, structure, thermal stability and methane combustion activity was investigated. when x >= 0.4, la, ( co, decomposed in the range of 530-580 degrees c to be converted into la2o3 la2o3 reacted with y-al2o3 to form laalo3 perovskite phase in the temperature range of 800-900 degrees c. baal2o4 spinel phase was suppressed due to the formation of laa10,perovskite phase, and higher dispersing of ba2+ in the solid phase was maintained, which is more favorable for the formation of hexaaluminate phase. when x < 0.4, the bet specific surface areas and methane combustion activities of the ba1-xlaxmn3al9o19-alpha catalysts decreased due to the formation of baal2o4 spinel phase. the hexaaluminate structure distorted to some extent when ba2+ were substituted with la3+. the larger the distortion, the lower the thermal stability of the ba1-xlaxmn3al9o19-alpha catalysts. the methane combustion activity of the ba1-xlaxmn3al9o19-alpha catalysts varied with the change of x, and the ba0.2la0.8mn3al19-alpha(x =0.8)catalyst showed the highest activity for methane combustion. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, multidisciplinary |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | hexaaluminate catalysts ; hydrothermal synthesis ; gasified biomass |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000233392400030 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/139750]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Yantai Univ, Chem & Biol Coll Sci & Technol, Inst Appl Catalysis, Yantai 264005, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Nat Gas Utilizat & Appl Catalysis, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis Basis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, JG,Tian, ZJ,Zhang, PQ,et al. Effect of La3+ substituting Ba2+ on the structure and methane combustion activity of Ba1-xLaxMn3Al9O19-alpha catalysts[J]. chemical journal of chinese universities-chinese,2005,26(11):2103-2107. |
| APA | Xu, JG.,Tian, ZJ.,Zhang, PQ.,Qu, XH.,Xu, YP.,...&Lin, LW.(2005).Effect of La3+ substituting Ba2+ on the structure and methane combustion activity of Ba1-xLaxMn3Al9O19-alpha catalysts.chemical journal of chinese universities-chinese,26(11),2103-2107. |
| MLA | Xu, JG,et al."Effect of La3+ substituting Ba2+ on the structure and methane combustion activity of Ba1-xLaxMn3Al9O19-alpha catalysts".chemical journal of chinese universities-chinese 26.11(2005):2103-2107. |
入库方式： OAI收割
来源：大连化学物理研究所
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