| Preparation of Fine Spherical Particle Sized Ceria by Precipitation Method with Ammonium Bicarbonate |
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| 作者姓名： | 朱兆武 龙志奇 张顺利 崔大立 张国成 |
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| 作者单位： | AdvancedMaterialsCo.Ltd.,BeijingGeneralResearchInstituteofNonferrousMetals,Beijing100088,China |
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| 基金项目： | Project supported by Rare Earth Department of National Development Committee，Preparation of High Quality Polishing Powder |
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| 摘 要： | Fine spherical panicle sized ceria (CeO2) was prepared by homogeneous precipitation method with ammonium bicarbonate as precipitant. The prepared CeO2 has the primary panicle size of 10-50nm when calcined between 400-700℃ analyzed by XRD and the aggregated particle size is about 300 nm measured by LASER panicle sizer. SEM, TGDTA and Zeta-potential analyzer were employed individually to study the morphology, and the fonnation of CeO2 product. It was found that excess NH4NO3 can serve as an sphericallization agent to prepare spherical Ce02 powder by precipitation method.
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| 关 键 词： | 超细球面颗粒 二氧化铈 碳酸氨 同源沉淀法 稀土元素 |
Preparation of Fine Spherical Particle Sized Ceria by Precipitation Method with Ammonium Bicarbonate |
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| Zhu Zhaowu,Long Zhiqi,Zhang Shunli,Cui Dali,Zhang Guocheng.Preparation of Fine Spherical Particle Sized Ceria by Precipitation Method with Ammonium Bicarbonate[J].Journal of Rare Earths,2005,23(1):81-84. |
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| Authors: | Zhu Zhaowu Long Zhiqi Zhang Shunli Cui Dali Zhang Guocheng |
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| Abstract: | Fine spherical particle sized ceria (CeO2) was prepared by homogeneous precipitation method with ammonium bicarbonate as precipitant. The prepared CeO2 has the primary particle size of 10～50 nm when calcined between 400～700 ℃ analyzed by XRD and the aggregated particle size is about 300 nm measured by LASER particle sizer. SEM, TG-DTA and Zeta-potential analyzer were employed individually to study the morphology and the formation of CeO2 product. It was found that excess NH4NO3 can serve as an sphericallization agent to prepare spherical CeO2 powder by precipitation method. |
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| Keywords: | spherical fine particle ceria precipitation ammonium bicarbonate rare earths |
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