| 超细氧化镁的直接沉淀法制备及其表征 |
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| 引用本文： | 刘文萍,熊利芝,彭治国.超细氧化镁的直接沉淀法制备及其表征[J].吉首大学学报(自然科学版),2007,28(2):100-104. |
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| 作者姓名： | 刘文萍 熊利芝 彭治国 |
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| 作者单位： | （吉首大学化学化工学院，湖南 吉首 416000） |
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| 基金项目： | 国家自然科学基金
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湖南省教育厅科研项目 |
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| 摘 要： | 通过正交实验法，研究了直接沉淀法合成超细氧化镁的诸因素对粒径和收率的影响，得到了最佳的工艺条件：反应物MgCl2浓度为1.2 mol/L，NH3·H2O浓度为0.2 mol/L，反应温度为45 ℃，反应配比MgCl2∶NH3·H2O为1∶10，表面活性剂量1.5‰，反应时间为25 min.用X-射线衍射、红外光谱、扫描电镜和粒度分析等对最佳条件下制得的MgO进行了表征.结果表明：该法得到的氧化镁分散性好、收率较高（60%）、平均粒径小（330 nm左右）且粒度分布均匀.
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| 关 键 词： | 超细氧化镁 直接沉淀法 正交实验 |
| 文章编号： | 1007-2985（2007）02-0100-05 |
| 收稿时间： | 2006-12-24 |
| 修稿时间： | 2006-12-24 |
Synthesis and Characterization of Superfine-MgO Powders by Direct Precipitation Method |
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| LIU Wen-ping,XIONG Li-zhi,PENG Zhi-guo.Synthesis and Characterization of Superfine-MgO Powders by Direct Precipitation Method[J].Journal of Jishou University(Natural Science Edition),2007,28(2):100-104. |
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| Authors: | LIU Wen-ping XIONG Li-zhi PENG Zhi-guo |
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| Institution: | (College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China) |
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| Abstract: | Superfine-sized magnesium oxide powders were synthesized by direct precipitation method.The optimum synthesis conditions were investigated by an orthogonal test as follows:the optimum concentration of reactants is MgCl2 1.2 mol/L,NH3·H2O 0.2 mol/L,their volume ratio of reactants V(MgCl2)∶V(NH3·H2O)] is 1∶10,temperature of reactants is 45 ℃,surfactants is 1.5‰,and time of the reaction is 25 min.The product were characterized by X-ray diffraction (XRD),infrared (IR) spectroscopy,scanning electron microscope (SEM),particle size analysis,and so on.Results showed that the yield of the superfine sized MgO is more than 60% with good dispersion behavior and narrow particles size of about 330 nm. |
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| Keywords: | superfine magnesium oxide direct precipitation method orthogonal test |
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