| 碳酸铝铵热分解制备纳米氧化铝粉体 |
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| 引用本文： | 申小清,李中军,要红昌,张峻.碳酸铝铵热分解制备纳米氧化铝粉体[J].无机化学学报,2003,19(6):650-654. |
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| 作者姓名： | 申小清 李中军 要红昌 张峻 |
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| 作者单位： | 1. 郑州大学材料工程学院,郑州,450052
2. 郑州大学化学系,郑州,450052 |
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| 基金项目： | 河南省科技攻关项目(No.991090328)，河南省特种功能材料重点实验室资助课题(No.9928)。 |
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| 摘 要： | Nanosized alumina powders were prepared from Al(NO3)3·9H2O and (NH4)2CO3 through the synthesis of ammonium aluminium carbonate hydroxide (AACH) and followed by calcination. TG-DTA， XRD， TEM and BET were employed to study the process of AACH thermal decomposition and to characterize the products obtained. The results show that high purity (99.97%) and nanosized spherical α-Al2O3 powders with the diameter of 40～50nm and BET surface area 32.5m2·g-1 can be obtained by calcining AACH at 1150℃ for 1.5h， the sequence of phase transformation during calcination was AACH → amorphous Al2O3 → γ-Al2O3 → α-Al2O3， and the activation energy of AACH decomposition is (115±5)kJ·mol-1.
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| 关 键 词： | 碳酸铝铵 α-Al2O3 纳米粉体 合成 表征 |
| 修稿时间： | 2002年12月16 |
Preparation of Nanosized Alumina Powders by Pyrolysis of Ammonium Aluminium Carbonate Hydroxide |
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| SHEN Xiao-Qing,LI Zhong-Jun,YAO Hong-Chang and ZHANG Jun.Preparation of Nanosized Alumina Powders by Pyrolysis of Ammonium Aluminium Carbonate Hydroxide[J].Chinese Journal of Inorganic Chemistry,2003,19(6):650-654. |
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| Authors: | SHEN Xiao-Qing LI Zhong-Jun YAO Hong-Chang and ZHANG Jun |
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