| Catalytic Combustion of Methane over MnOx／ZrO2-Al2O3 Catalysts |
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| 作者姓名： | XiufengXu YanfeiPan YanxiaLiu ZhanghuaiSuo ShixueQi LidunAn |
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| 作者单位： | [1]InstituteofAppliedCatalysis.YantasUniversityYantai264005.China [2]AnalysisCenter.YantaiUniversity.Yantai264005,China |
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| 基金项目： | This work was financially supported by Shandong Provincial Department of Science and Technology(project number:981206403)and the State Key Laboratory of Coal Conversion at Institute of Coal Chemistry of CAS(2002-2003) |
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| 摘 要： | MnOx/Al2O3 and MnOx/ZrO2-Al2O3 catalysts were prepared by incipient wetness impregnation of Mn(CH3COO)2 on the corresponding supports, followed by the characterization using X-ray diffraction (XRD). temperature programmed reduction (TPR) and BET surface area techniques. The result shows the BET surface area of ZrO2-Al2O3 is lower than that of Al2O3 due to the loading of ZrO2.However tile resulted MnOx/ZrO2-Al2O3 catalyst exhibits higher activity for methane combustion than MnOx/Al2O3, because the addition of ZrO2 onto Al2O3 is beneficial for the dispersion of Mn species and the improvement of the lattice oxygen activity in MnOx. subsequently the activation of methane during combustion. The optimum loading of Zr in MnOx/ZrO2-Al2O3 is in the range of 5%-10% correlated with the calcination temperatures of catalyst supports.
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| 关 键 词： | 甲烷 沼气 燃烧 催化剂 三氧化二铝 X射线衍射 温度变量 MnOx 氧化锆 |
Catalytic Combustion of Methane over MnOx/ZrO2-Al2O3 Catalysts |
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| XiufengXu YanfeiPan YanxiaLiu ZhanghuaiSuo ShixueQi LidunAn.Catalytic Combustion of Methane over MnOx/ZrO2-Al2O3 Catalysts[J].Journal of Natural Gas Chemistry,2003,12(4):228-232. |
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| Authors: | Xiufeng Xu Yanfei Pan Yanxia Liu Zhanghuai Suo Shixue Qi Lidun An |
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| Institution: | 1.Institute of Applied Catalysis, Yantai University, Yantai 264005, China; |
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| Abstract: | MnOx/Al2O3 and MnOx/ZrO2-Al2O3 catalysts were prepared by incipient wetness impregnation of Mn(CH3COO)2 on the corresponding supports, followed by the characterization using X-ray diffraction (XRD), temperature programmed reduction (TPR) and BET surface area techniques. The result shows the BET surface area of ZrO2-Al2O3 is lower than that of Al2O3 due to the loading of ZrO2. However the resulted MnOx/ZrO2-Al2O3 catalyst exhibits higher activity for methane combustion than MnOx/Al2O3, because the addition of ZrO2 onto Al2O3 is beneficial for the dispersion of Mn species and the improvement of the lattice oxygen activity in MnOx,subsequently the activation of methane during combustion. The optimum loading of Zr in MnOx/ZrO2-Al2O3 is in the range of 5%-10% correlated with the calcination temperatures of catalyst supports. |
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| Keywords: | MnOx/Al_2O_3 MnOx/ZrO_2-Al_2O_3 X-ray diffraction temperature programmed reduction catalytic combustion methane |
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