| Synthesis of crystalline γ-Al2O3 with high purity |
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| 引用本文： | 仪建红,孙友谊,高建峰,徐春彦. Synthesis of crystalline γ-Al2O3 with high purity[J]. 中国有色金属学会会刊, 2009, 19(5): 1237-1242. DOI: 10.1016/S1003-6326(08)60435-5 |
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| 作者姓名： | 仪建红 孙友谊 高建峰 徐春彦 |
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| 摘 要： |
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| 关 键 词： | 氧化铝 结晶 合成 X射线衍射分析 催化剂载体 纯度 俄亥俄州 反应条件 |
| 收稿时间： | 2008-07-13 |
Synthesis of crystalline γ-Al2O3 with high purity |
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| Jian-hong YI, You-yi SUN, Jian-feng GAO,Chun-yan XU. Synthesis of crystalline γ-Al2O3 with high purity[J]. Transactions of Nonferrous Metals Society of China, 2009, 19(5): 1237-1242. DOI: 10.1016/S1003-6326(08)60435-5 |
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| Authors: | Jian-hong YI You-yi SUN Jian-feng GAO Chun-yan XU |
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| Affiliation: | aCollege of Materials Science and Engineering, North University of China, Taiyuan 030051, China;bDepartment of Chemistry, North University of China, Taiyuan 030051, China |
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| Abstract: | Crystalline γ-AlO(OH) was synthesized by the precipitation of sodium aluminate and oxalic acids in aqueous solution. And then γ-AlO(OH) was successfully transferred to γ-Al2O3 after subsequent high temperature heat treatment. The effects of reaction conditions on formation of γ-AlO(OH) and γ-Al2O3 were further investigated in detail. The XRD analysis shows that the complete formation of crystalline γ-Al2O3 is at pH 8–9, reaction temperature of 93–96 °C and calcination temperature of higher than 400 °C. The product of γ-Al2O3 contains impurity, including iron, calcium and silicon ion with a low content of about 0.01% and has large specific surface area and high pore volume of 269.9 m2/g and 0.57 mL/g, which can be applied in catalysts and catalyst supports. |
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| Keywords: | γ -Al2O3 high purity sodium aluminate oxalic acids |
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