| Synthesis and Characterization of Large Surface Area Yttrium Oxide by Precipitation Method |
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| 作者姓名： | 崔大立 龙志奇 张顺利 崔梅生 黄小卫 |
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| 作者单位： | Grirem Advanced Materials Corporation Limited，General Research Institute for Non-Ferrous Metals，Beijing 100088，China，Grirem Advanced Materials Corporation Limited，General Research Institute for Non-Ferrous Metals，Beijing 100088，China，Grirem Advanced Materials Corporation Limited，General Research Institute for Non-Ferrous Metals，Beijing 100088，China，Grirem Advanced Materials Corporation Limited，General Research Institute for Non-Ferrous Metals，Beijing 100088，China，Grirem Advanced Materials Corporation Limited，General Research Institute for Non-Ferrous Metals，Beijing 100088，China |
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| 基金项目： | SupportedbyNationalDevelopmentandReformCommission |
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| 摘 要： | Rareearthoxides(REO)withlargesurfaceareahavehighchemicalreactionactivity ,soitisusedwidelyinthefieldofcatalysis ,SOFC ,advancedce ramicandsoon1] .Inordertosatisfythedemandofthenewfunctionmaterials ,thepreparationmethodofspecialphysicalpropertyREcompoundneedstobedeveloped .Yttriumoxide ,especiallywithlargesur faceareaisaREOandwidelyusedintheabovefield .Industrially ,yttriumoxideusuallywaspreparedbythermaldecompositionofyttriumoxalateat 80 0～10 0 0℃for 2h .Itssurfaceareaisonly 2～ 4m2 ·…
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| 关 键 词： | 表面积 沉淀法 稀土元素 氧化镱 形态组织 |
Synthesis and Characterization of Large Surface Area Yttrium Oxide by Precipitation Method |
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| Cui Dali,Long Zhiqi,Zhang Shunli Cui Meisheng,Huang Xiaowei.Synthesis and Characterization of Large Surface Area Yttrium Oxide by Precipitation Method[J].Journal of Rare Earths,2004,22(6):771-774. |
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| Authors: | Cui Dali Long Zhiqi Zhang Shunli Cui Meisheng Huang Xiaowei |
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| Affiliation: | Cui Dali,Long Zhiqi~*,Zhang Shunli Cui Meisheng,Huang Xiaowei |
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| Abstract: | The method for preparing yttrium oxide with large specific surface area was introduced. By means of BET, SEM, TG and DTA analysis, the effects of precipitant, stirring velocity, non-RE impurity in solution, calcination temperature, on the surface area were studied respectively. The Y2O3 sample with specific surface area of more than 60 m2*g-1 and L.O.I less than 1% was prepared in the suitable precipitation condition and calcinations temperature when the ammonia used as precipitant. The SEM shows that the Y2O3 prepared with large surface area is the aggregation of about 50 nm particles. |
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| Keywords: | surface area yttrium oxide morphology precipitation method rare earths |
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