| Preparation and Water—Gas Shift Catalytic Activities of the Perovs—kite Type Complex Oxide La1—xCexFeO3 |
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| 引用本文： | 马红钦,谭欣,朱慧铭,张继炎,张鎏.Preparation and Water—Gas Shift Catalytic Activities of the Perovs—kite Type Complex Oxide La1—xCexFeO3[J].天津大学学报(英文版),2003,9(2):83-88. |
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| 作者姓名： | 马红钦 谭欣 朱慧铭 张继炎 张鎏 |
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| 作者单位： | School of Chemical Engineering and Technology，Tianjin University，School of Chemical Engineering and Technology，Tianjin University，School of Chemical Engineering and Technology，Tianjin University，School of Chemical Engineering and Technology，Tianjin University，School of Chemical Engineering and Technology，Tianjin University Tianjin 300072，China，Tianjin 300072，China，Tianjin 300072，China，Tianjin 300072，China，Tianjin 300072，China |
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| 摘 要： | Thewater gasshiftreaction (WGSR)isanimpor tantstepinmanyindustrialprocesses,includingammoni aandhydrogenproduction .Itisusuallyassistedbysev eralcatalysts ,oneofwhichisiron basedshiftcatalystwithatypicalcompositionof 74 .2 %Fe2 O3,10 .0 %Cr2 O3,0 .2 %MgO ,0 .5 %K2 Oandbalancevolatiles1] .Obviously ,chromiaasthemainadditivecanbefoundinalmostallofiron basedhightemperaturewater gasshiftcatalysts.ThehexavalentchromiuminCrO3,thepre cursorofchromiainFe Crseriescatalysts ,isakindofveryharmfuls…
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| 关 键 词： | 复合氧化物 钙钛矿结构 稀土 铁 水－气变换接触反应 反应活性 催化剂 |
Preparation and Water-Gas Shift Catalytic Activities of the Perovskite Type Complex Oxide La1-x CexFeO3 |
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| MA Hong qin,TAN Xin,ZHU Hui ming ,ZHANG Ji yan,ZHANG Liu.Preparation and Water-Gas Shift Catalytic Activities of the Perovskite Type Complex Oxide La1-x CexFeO3[J].Transactions of Tianjin University,2003,9(2):83-88. |
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| Authors: | MA Hong qin TAN Xin ZHU Hui ming ZHANG Ji yan ZHANG Liu |
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| Institution: | School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
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| Abstract: | The perovskite type rare-earth iron complex (REIC) oxide La1-xCexFeO3 is designed and prepared as water-gas shift catalyst. Activity evaluation and heat-resisting test show that the perovskite type compounds La1-xCexFeO3 (· K) has a good thermal stability if x is less than or equal to 0. 5. But when x is greater than 0. 5, La1-x Cex FeO3 ( · K) will turn out to be ceria and magnetite partially or completely at high temperature in the shift reaction atmosphere. In the case of x = 0. 5, the conversion of carbon monoxide is about 68% at 530℃. Potassium can greatly improve the low temperature activity, but slightly lower the high temperature activity,and has little impact on the thermal stability. La0.5 Ce0.5 FeO3 ( · K) is a promising chromium-free high-temperature shift catalyst. |
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| Keywords: | rare earth complex oxide perovskite type compound chromium free high temperature shift catalyst |
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