| Preparation of La0.9RE0.1MnO3 Ultra-fine Particles Used for CH4 Oxidation |
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| 作者姓名： | 刘源 郑海涛 刘全生 张通 |
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| 作者单位： | Department of Chemical Engineering，Inner Mongolia Polytechnic University，Huhehot 010062，China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina ( 2 986 90 0 1 ) |
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| 摘 要： | Ｐｅｒｏｖｓｋｉｔｅ ｔｙｐｅｏｘｉｄｅｓ (ｇｅｎｅｒａｌｆｏｒｍｕｌａＡＢＯ3 )ｈａｖｅｂｅｅｎａｔｔｒａｃｔｉｎｇｍｕｃｈａｔｔｅｎｔｉｏｎｆｏｒｍｏｒｅｔｈａｎｔｗｏｄｅｃａｄｅｓｄｕｅｔｏｔｈｅｉｒｐｏｔｅｎｔｉａｌｃｏｍｍｅｒｃｉａｌａｐｐｌｉｃａｔｉｏｎｓａｓｃａｔａｌｙｓｔｓｆｏｒｖａｒｉｏｕｓｒｅａｃｔｉｏｎｓ :ｏｘｉｄａｔｉｏｎｏｆＣＯ1～ 3 ] ａｎｄｌｉｇｈｔｈｙ ｄｒｏｃａｒｂｏｎｓ4～ 7] ,ｃｏｍｂｕｓｔｉｏｎｏｆｎａｔｕｒａｌｇａｓｏｒＣＨ4 8～ 1 1 ] (ｔｏｃｏｎｔｒｏｌＮ…
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| 关 键 词： | La0.9RE0.1MnO3 超细粒子 稀土 催化燃烧 制备 钙钛矿 |
Preparation of La0.9RE0.1MnO3 Ultra-fine Particles Used for CH4 Oxidation |
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| Liu Yuan,Zheng Haitao,Liu Quansheng,Zhang Tong.Preparation of La0.9RE0.1MnO3 Ultra-fine Particles Used for CH4 Oxidation[J].Journal of Rare Earths,2002,20(5):457-464. |
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| Authors: | Liu Yuan Zheng Haitao Liu Quansheng Zhang Tong |
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| Abstract: | A technique for preparing perovskite-type oxides was developed. By this technique, ultra-fine particles of La0.9RE0.1MnO3 (RE: Y, Ce, Pr, Sm, Gd,or Dy) with high surface area and single perovskite structure were prepared, and the series of La0.9RE0.1MnO3 catalysts were studied experimentally. The so prepared ultra-fine particles exhibites high catalytic activity for CH4 total oxidation. The ultra-fine particles of La0.9RE0.1MnO3 (except for La0.9Pr0.1MnO3) prepared by this method are thermally much more stable than LaMnO3. Of the La0.9RE0.1MnO3 series, La0.9Y0.1MnO3 is most thermally stable, and La0.9Y0.1MnO3 or La0.9Gd0.1MnO3 (varies with calcination temperature) exhibits the highest catalytic activity for total oxidation of methane. The specific surface area of La0.9Y0.1MnO3 calcined at 1000 ℃ reaches 14.9 m2*g-1, while the specific surface area of LaMnO3 calcined at the same temperature is only 1.8 m2*g-1. |
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| Keywords: | rare earths perovskite type oxides ultra fine particles catalytic combustion |
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