| Surface Acidity／Basicity and Catalytic Reactivity of CeO2／γ—A12O3 Catalysts for the Oxidative Dehydrogenation of Ethane with Carbon Dioxide to Ethylene |
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| 引用本文： | XinGe ShenghuaHu QingSun JianyiShen. Surface Acidity／Basicity and Catalytic Reactivity of CeO2／γ—A12O3 Catalysts for the Oxidative Dehydrogenation of Ethane with Carbon Dioxide to Ethylene[J]. 天然气化学杂志, 2003, 12(2): 119-122 |
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| 作者姓名： | XinGe ShenghuaHu QingSun JianyiShen |
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| 作者单位： | SchoolofChemistryandChemicalEngineering,NanjingUniversity,Nanjing210093China |
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| 摘 要： | Dehydrogenation of ethane to ethylene in CO2 was investigated over CeO2/γ-Al2O3 catalysts at 700℃ in a conventional flow reactor operating at atmospheric pressure. XRD, BET and microcalorimetric adsorption techniques were used to characterize the structure and surface acidity/basicity of the CeO2/γ-Al2O3 catalysts. The results show that the surface acidity decreased while the surface basicity increased after the addition of CeO2 to γ-Al2O3. Accordingly, the activity of the hydrogenation reaction of CO2 increased, which might be responsible for the enhanced conversion in the dehydrogenation of ethane to ethylene. The highest ethane conversion obtained was about 15% for the 25?O2/γ-Al2O3. The selectivity to ethylene was high for all the CeO2, γ-Al2O3 and CeO2/γ-Al2O3 catalysts.
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| 关 键 词： | CeO2／γ－A12O3 表面酸碱度 催化剂 氧化脱氢反应 乙烷 二氧化碳 CO2 合成 乙烯 |
Surface Acidity/Basicity and Catalytic Reactivity of CeO2/-Al2O3 Catalysts for the Oxidative Dehydrogenation of Ethane with Carbon Dioxide to Ethylene |
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| Xin Ge,Shenghua Hu,Qing Sun,Jianyi Shen. Surface Acidity/Basicity and Catalytic Reactivity of CeO2/-Al2O3 Catalysts for the Oxidative Dehydrogenation of Ethane with Carbon Dioxide to Ethylene[J]. Journal of Natural Gas Chemistry, 2003, 12(2): 119-122 |
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| Authors: | Xin Ge Shenghua Hu Qing Sun Jianyi Shen |
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| Affiliation: | School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China |
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| Abstract: | Dehydrogenation of ethane to ethylene in CO2 was investigated over CeO2/-Al2O3 catalystsat 700oC in a conventional ow reactor operating at atmospheric pressure. XRD, BET and microcalori-metric adsorption techniques were used to characterize the structure and surface acidity/basicity of theCeO2/r-Al2O3 catalysts. The results show that the surface acidity decreased while the surface basicityincreased after the addition of CeO2 to r-Al2O3. Accordingly, the activity of the hydrogenation reaction ofCO2 increased, which might be responsible for the enhanced conversion in the dehydrogenation of ethaneto ethylene. The highest ethane conversion obtained was about 15% for the 25%CeO2/r-Al2O3. Theselectivity to ethylene was high for all the CeO2, r-Al2O3 and CeO2/r-Al2O3 catalysts. |
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| Keywords: | CeO2/r-Al2O3 catalysts ethane dehydrogenation ethylene carbon dioxide |
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