| Effect of Drying Methods on the Structure and Combustion Activity of Mn—Substituted Hexaaluminate Catalysts |
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| 引用本文： | JinguangXu ZhijianTian JunweiWang YunpengXu ZhushengXu LiwuLin. Effect of Drying Methods on the Structure and Combustion Activity of Mn—Substituted Hexaaluminate Catalysts[J]. 天然气化学杂志, 2003, 12(2): 105-112 |
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| 作者姓名： | JinguangXu ZhijianTian JunweiWang YunpengXu ZhushengXu LiwuLin |
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| 作者单位： | [1]LaboratoryofNaturalGasUtilizationandAppliedCatalysis,DalianInstituteofChemicalPhysics.ChineseAcademyofSciences,457ZhongshanRoad,Dalianll6023China [2]LaboratoryofNaturalGasUtilizationandAppliedCatalysis,DalianInstituteofChemicalPhysics.ChineseAcademyofSciences,457ZhongshanRoad,Dalianll6023China;StateKeyLaboratoryofCatalysis,DalianInstituteofChemicalPhysics,C |
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| 基金项目： | the national 973 projects(No.G1999022401) |
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| 摘 要： | Conventional oven drying (COD) and supercritical drying (SCD) methods were applied to the preparation of Mn-substituted hexaaluminate (BaMnA111O19-α) catalysts. The effect of drying methods on phase composition, specific surface area, pore structure, reduction behavior of Mn^3 ions, and combus-tion activity of the samples was investigated. The homogenous mixing of the components in the sol-gel process could be maintained by SCD, and the hexaaluminate phase was almost the only phase of the resulting materials after calcination. H2-TPR revealed that the Mn^3 ions in the sample obtained by SCD were easier to be reduced than that by COD. Moreover, the samples obtained by SCD have higher surface area, narrower pore size distribution, and higher combustion activity than those obtained by COD.
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| 关 键 词： | 六铝酸钡盐 催化剂 甲烷 燃烧 超临界烘干 钡锰铝复合氧化物 |
Effect of Drying Methods on the Structure and Combustion Activity of Mn-Substituted Hexaaluminate Catalysts |
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| Jinguang Xu,Zhijian Tian,Junwei Wang,Yunpeng Xu,Zhusheng Xu,Liwu Lin. Effect of Drying Methods on the Structure and Combustion Activity of Mn-Substituted Hexaaluminate Catalysts[J]. Journal of Natural Gas Chemistry, 2003, 12(2): 105-112 |
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| Authors: | Jinguang Xu Zhijian Tian Junwei Wang Yunpeng Xu Zhusheng Xu Liwu Lin |
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| Affiliation: | Laboratory of Natural Gas Utilization and Applied Catalysis, Dalian Institute of Chemical Physics,Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China; |
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| Abstract: | Conventional oven drying (COD) and supercritical drying (SCD) methods were applied to the preparation of Mn-substituted hexaaluminate (BaMnAl11O19-α) catalysts. The effect of drying methods on phase composition, specific surface area, pore structure, reduction behavior of Mn3+ ions, and combustion activity of the samples was investigated. The homogenous mixing of the components in the sol-gel process could be maintained by SCD, and the hexaaluminate phase was almost the only phase of the resulting materials after calcination. H2-TPR revealed that the Mn3+ ions in the sample obtained by SCD were easier to be reduced than that by COD. Moreover, the samples obtained by SCD have higher surface area, narrower pore size distribution, and higher combustion activity than those obtained by COD. |
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| Keywords: | hexaaluminate catalytic combustion methane supercritical drying |
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