| 水热法合成三维纳米氧化铝粉体的研究 |
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| 引用本文： | 兰伟兴,薛茹君,方俊,王庆超,丁杰.水热法合成三维纳米氧化铝粉体的研究[J].轻金属,2012(1):20-23. |
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| 作者姓名： | 兰伟兴 薛茹君 方俊 王庆超 丁杰 |
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| 作者单位： | 安徽理工大学化学工程学院,安徽淮南,232001 |
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| 摘 要： | 以Al(NO3)3为原料,尿素为OH-缓释沉淀剂,采用水热-均匀沉淀法得到了自组装生成的三维"十"字型拟薄水铝石(γ-AlOOH)前驱物。采用XRD、TG-DSC、SEM等方法对产物进行表征,结果表明,该"十"字型微观结构的翼长及长度约50nm,在该三维结构形成过程中,尿素作为OH-缓释剂起决定性作用。前驱物在550℃焙烧2h后得到的γ-Al2O3保持了该三维"十"字微观结构,其表面积为230 m2/g、平均粒径为6nm,对温度、时间、尿素投料比例等影响因素进行了探讨。
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| 关 键 词： | 水热晶化法 均匀沉淀法 纳米三维氧化铝 |
Synthesis of 3D nano- alumina via hydrothermal- coprecipitation method |
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| LAN Wei-xing
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XUE Ru-jun
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FANG Jun
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WANG Qing-chao
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DING Jie.Synthesis of 3D nano- alumina via hydrothermal- coprecipitation method[J].Light Metals,2012(1):20-23. |
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| Authors: | LAN Wei-xing XUE Ru-jun FANG Jun WANG Qing-chao DING Jie |
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| Affiliation: | (Anhui University of Science and Technology,School of Chemical Engineering,Huainan 232001,China) |
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| Abstract: | The 3D "十" shape-like of γ-AlOOH and γ-Al2O3 microstructures were synthesized via hydrothermal-coprecipitation method using Al(NO3)3 as raw material and CO(NH2)2 as slow-release precipitant of OH-.The crystal structures and the morphologies of γ-AlOOH and γ-Al2O3 were characterized by XRD,SEM and TG-DSC,et al.It was shown that the products has an average diameter of 50nm.The slow-release precipitant of CO(NH2)2 was found to play a key role in achieving the uniform morphology of the 3D product,and γ-Al2O3 kept its original microstructures by roasting in 550℃ last 2h.The surface area of γ-Al2O3 was 230 m2/g and the average size was 6nm.The paper also discussed the influential factors such as temperature,time and the feeding proportion of CO(NH2)2. |
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| Keywords: | hydrothermal method coprecipitation 3D nano-alumina |
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