| 异丙醇溶析铝酸钠溶液制备高纯氢氧化铝 |
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| 引用本文： | 殷倩楠,金会心,肖媛丹,郭育良. 异丙醇溶析铝酸钠溶液制备高纯氢氧化铝[J]. 有色金属科学与工程, 2021, 12(4): 33-41. DOI: 10.13264/j.cnki.ysjskx.2021.04.005 |
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| 作者姓名： | 殷倩楠 金会心 肖媛丹 郭育良 |
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| 作者单位： | 贵州大学材料与冶金学院，贵阳 550025 |
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| 基金项目： | 贵州省科技计划项目黔科合支撑[2020]502121 |
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| 摘 要： | 以铝酸钠溶液分解制备Al(OH)3为基础,通过加入异丙醇溶析的方式,解决了铝酸钠溶液制备氢氧化铝分解速率缓慢、分解率低的问题,再结合超声波有机酸洗纯化的方式,去除了生成Al(OH)3中的晶间碱.考察了不同条件对溶析结果的影响,结果表明:当分解温度为30℃、分解时间12 h、异丙醇与铝酸钠溶液体积比为1:1时,分解率可达...
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| 关 键 词： | 异丙醇 溶析法 分解率 高纯氢氧化铝 纯化 |
| 收稿时间： | 2021-02-24 |
Preparation of high purity aluminum hydroxide by dissolving sodium aluminate solution with isopropanol |
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| YIN Qiannan,JIN Huixin,XIAO Yuandan,GUO Yuliang. Preparation of high purity aluminum hydroxide by dissolving sodium aluminate solution with isopropanol[J]. Nonferrous Metals Science and Engineering, 2021, 12(4): 33-41. DOI: 10.13264/j.cnki.ysjskx.2021.04.005 |
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| Authors: | YIN Qiannan JIN Huixin XIAO Yuandan GUO Yuliang |
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| Affiliation: | College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China |
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| Abstract: | On the basis of the decomposition of Al(OH)3 from sodium aluminate solution, the problems of slow decomposition rate and low decomposition rate in the preparation of aluminum hydroxide from sodium aluminate solution were solved by adding the method of isopropionic alcohol dissolution. Combined with the method of ultrasonic organic pickling to remove impurity, the intergranular base in the formation of Al(OH)3 was removed. The effects of different conditions on the decomposition results were investigated. The results show that the decomposition rate reaches 72.98% under the following conditions: a decomposition temperature of 30 ℃, decomposition time 12 h, volume ratio of isopropanol to sodium aluminate solution 1∶1. When the mass ratio of citric acid to Al(OH)3 is 1∶2 and the concentration of acetic acid is 9 mol/L, the intergranular base in Al(OH)3 can be effectively removed in the purification of organic acids by ultrasonic. It is found that high purity aluminum hydroxide with decomposition rate of 75.98%, D50=2.539 μm and purity of 99.9034% can be prepared by means of isopropanol solution and ultrasonic organic pickling to remove intergranular alkali. |
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