| 纳米氧化镧的制备及性能研究 |
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| 引用本文： | 王丽华,伊晓东. 纳米氧化镧的制备及性能研究[J]. 福建师范大学学报(自然科学版), 2012, 28(4): 60-63 |
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| 作者姓名： | 王丽华 伊晓东 |
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| 作者单位： | 1. 福建师范大学化学与化工学院,福建福州,350007
2. 固体表面物理化学国家重点实验室,厦门大学化学化工学院,福建厦门361005 |
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| 基金项目： | 国家自然科学基金资助项目，福建省教育厅资助项目 |
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| 摘 要： | 采用热分解法、溶胶-凝胶法和沉淀法制备了纳米氧化镧,并对其进行XRD、BET、TEM、CO2-TPD和O2-TPD表征.结果表明,由不同制备方法获得的纳米氧化镧都为六方晶相结构,但由沉淀法制得的纳米氧化镧的颗粒最小(30～50nm),由溶胶-凝胶法制得的纳米氧化镧的比表面积最大(20.8m2.g-1),因而这两种方法获得的纳米氧化镧具有较好的吸附氧能力.
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| 关 键 词： | 纳米氧化镧 制备 吸附氧能力 |
Preparation and Performance of Nanosized La2O3 |
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| WANG Li-hua , YI Xiao-dong. Preparation and Performance of Nanosized La2O3[J]. Journal of Fujian Teachers University(Natural Science), 2012, 28(4): 60-63 |
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| Authors: | WANG Li-hua YI Xiao-dong |
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| Affiliation: | 1.College of Chemistry and Chemical Engineering,Fujian Normal University,Fuzhou 350007,China;2.State Key Laboratory of Physical Chemistry of Solid Surfaces,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China) |
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| Abstract: | La2O3 were prepared by decomposition,sol-gel and precipitation methods,respectively,and the properties of the La2O3 were determined by XRD,BET,TEM,CO2-TPD and O2-TPD.The results showed that all of the samples were hexagonal La2O3,smaller size(30~50 nm) and larger specific surface area(20.8 m2·g-1) were obtained by precipitation and sol-gel methods,respectively,which would be favorable to absorb O2. |
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| Keywords: | nanosized La2O3 preparation activity of adsorbed oxygen |
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