超细氧化镁的直接沉淀法制备及其表征

journal6 ›› 2007, Vol. 28 ›› Issue (2): 100-104.

超细氧化镁的直接沉淀法制备及其表征

（吉首大学化学化工学院，湖南吉首 416000）

出版日期:2007-03-25 发布日期:2012-06-18
作者简介:刘文萍(1973-),女,湖南凤凰人，吉首大学化学化工学院讲师,硕士,主要从事催化材料和能源材料研究.
基金资助:
国家自然科学基金资助项目(29843002)；湖南省教育厅科学研究项目(04B016)

Synthesis and Characterization of Superfine-MgO Powders by Direct Precipitation Method

(College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)

Online:2007-03-25 Published:2012-06-18

摘要/Abstract

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.

关键词： 超细氧化镁, 直接沉淀法, 正交实验

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.

Key words: superfine magnesium oxide, direct precipitation method, orthogonal test

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]. journal6, 2007, 28(2): 100-104.

LIU Wen-Ping, XIONG Li-Zhi, PENG Zhi-Guo. Synthesis and Characterization of Superfine-MgO Powders by Direct Precipitation Method[J]. journal6, 2007, 28(2): 100-104.

[1]	石爱华, 曾孟雄, 周再兴, 颜文斌. 低品位氧化锌矿湿法浸取制备纳米氧化锌[J]. journal6, 2010, 31(5): 96-100.
[2]	麻顺华, 田力, 唐世洪. 基于正交实验法的WO₃电致变色薄膜Li掺杂分析[J]. journal6, 2009, 30(3): 57-61.
[3]	李志平, 尹笃林, 李辉, 吴竹青. 微波辅助提取柿叶黄酮[J]. journal6, 2006, 27(1): 110-113.