| 轻烧白云石粉料制备纳米级片状氢氧化镁 |
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| 引用本文： | 勇昕,李敏,刘家祥,饶发明.轻烧白云石粉料制备纳米级片状氢氧化镁[J].北京化工大学学报(自然科学版),2011,38(6):71-75. |
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| 作者姓名： | 勇昕 李敏 刘家祥 饶发明 |
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| 作者单位： | 北京化工大学化工资源有效利用国家重点实验室,北京,100029;武汉钢铁集团矿业有限责任公司乌龙泉矿,湖北武汉,430213 |
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| 摘 要： | 以轻烧白云石粉料和氨水为原料，采用水热法合成了纳米级氢氧化镁。通过SEM和XRD表征方法，研究了水热反应温度、表面活性剂的种类和氨水添加量对氢氧化镁晶体形貌的影响。结果表明：水热温度为180℃时晶体的生长方向发生改变，极性较弱的001]面对应的衍射峰增强；添加阴离子表面活性剂十二烷基苯磺酸钠制得的氢氧化镁分散性较好；以弱电解质氨水做沉淀剂，随着氨水添加量的增加，氢氧化镁的颗粒大小变得更加均匀，当镁离子和氨水的物质的量比为3∶7时颗粒大小最均匀。
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| 关 键 词： | 轻烧白云石灰 氢氧化镁 表面活性剂 水热合成 |
Preparation of nanoscale flake magnesium hydroxide from powdered of light-burnt dolomite |
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| YONG Xin,LI Min,LIU JiaXiang,Rao FaMing.Preparation of nanoscale flake magnesium hydroxide from powdered of light-burnt dolomite[J].Journal of Beijing University of Chemical Technology,2011,38(6):71-75. |
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| Authors: | YONG Xin LI Min LIU JiaXiang Rao FaMing |
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| Institution: | 1.The State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029; 2.The Wulongquan Iron Mine of Mineral CO. WISCO, Wuhan Hubei 430213, China |
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| Abstract: | Magnesium hydroxide has been hydrothermally synthesized using light-burnt dolomite and aqueous ammonia as raw materials.The synthesized samples were characterized by X-ray diffraction(XRD) and scanning electron microscopy(SEM).The effect of varying the hydrothermal temperature,amount of added surfactant and dosage of aqueous ammonia on the crystallinity was discussed.The crystal growth direction varied with temperature and the intensity of the X-ray diffraction peak was maximized when the hydrothermal react... |
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| Keywords: | light-burnt dolomite magnesium hydroxide surfactant thermalsynthesis |
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