| Effect of Preparation Method on Surface Area and Crystalline Form of CeO2-ZrO2 Solid Solution |
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| 引用本文： | 王晓红,郭耘,卢冠忠,郭杨龙,王筠松,张志刚,刘晓晖. Effect of Preparation Method on Surface Area and Crystalline Form of CeO2-ZrO2 Solid Solution[J]. 中国稀土学报(英文版), 2004, 22(6): 763-765 |
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| 作者姓名： | 王晓红 郭耘 卢冠忠 郭杨龙 王筠松 张志刚 刘晓晖 |
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| 作者单位： | Laboratory for Advanced Materials，Research Institute of Industrial Catalysis，East China University of Science and Technology，Shanghai 200237，China，Laboratory for Advanced Materials，Research Institute of Industrial Catalysis，East China University of Science and Technology，Shanghai 200237，China，Laboratory for Advanced Materials，Research Institute of Industrial Catalysis，East China University of Science and Technology，Shanghai 200237，China，Laboratory for Advanced Materials，Research Institute of Industrial Catalysis，East China University of Science and Technology，Shanghai 200237，China，Laboratory for Advanced Materials，Research Institute of Industrial Catalysis，East China University of Science and Technology，Shanghai 200237，China，Laboratory for Advanced Materials，Research Institute of Industrial Catalysis，East China University of Science and Technology，Shanghai 200237，China，Laboratory for Advanced Materials，Research Institute of Industrial Catalysis，East China University of Science and Technology，Shanghai 200237，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，上海市科委资助项目，Rare Earths Office of Shanghai Municipality |
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| 摘 要： | TheCeO2 ZrO2 solidsolutionisacrucialcompo nentinthethree waycatalysts(TWCs)usedtocatalyzethesimultaneouspurificationofCO ,HCandNOxfromanautomobileexhaust [1～ 3] .Besidesafeasiblecatalyticactivity ,itshouldhavehighthermalstabilityandoxygenstoragecapacity(OSC) .InordertogainhighperformanceCeO2 ZrO2 solidsolution ,varioustechniqueshavebeendeveloped .ItwasshownthataneffectofpreparationmethodonthesurfaceareaandcrystallineformofCeO2 ZrO2 isveryobvious .Intheearliestwork ,theCeO2 ZrO…
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| 关 键 词： | 晶体结构 固溶性 稀土元素 反向微乳液法 二氧化铈 |
Effect of Preparation Method on Surface Area and Crystalline Form of CeO2-ZrO2 Solid Solution |
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| Wang Xiaohong,Guo Yun,Lu Guanzhong,Guo Yanglong,Wang Yunsong. Effect of Preparation Method on Surface Area and Crystalline Form of CeO2-ZrO2 Solid Solution[J]. Journal of Rare Earths, 2004, 22(6): 763-765 |
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| Authors: | Wang Xiaohong Guo Yun Lu Guanzhong Guo Yanglong Wang Yunsong |
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| Affiliation: | Wang Xiaohong,Guo Yun,Lu Guanzhong~*,Guo Yanglong,Wang Yunsong |
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| Abstract: | The CeO2-ZrO2 solid solutions were prepared by a reverse microemulsion method. The effect of preparation parameters on the surface area and crystalline form of the solid solutions were studied by the BET surface area and XRD analysis. The studies indicate that the separation of the microemulsion phase during the preparation procedure can decrease the specific surface area of sample, adding hydrogen peroxide in the matrix solution can increase the specific surface area and stability of sample. The surface area of sample calcined at 550 ℃ for 5 h is 149 m2·g-1, and that calcined at 900 ℃ for 6 h is 88 m2·g-1.The sample with tetragonal symmetry Ce0.5Zr0.5O2 phase has a higher stability. |
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| Keywords: | reverse microemulsion method preparation CeO2-ZrO2 solid solution high surface area crystalline form rare earths |
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