摘要
以工业硫酸镁和草酸铵为原料,采用直接沉淀法合成了超细粉体氧化镁,并通过红外光谱(IR)、热重分析(TG-DTA)、X射线粉末衍射(XRD)、透射电镜(TEM)等手段对该纳米微粒的结构进行了表征.结果表明所制得的纳米氧化镁微粒呈立方晶格,形貌为椭球体,分散性好,粒径在25～35nm之间.考察了反应物浓度、加料方式和煅烧温度等各种因素对粉体质量的影响.
The ultra-fine magnesium oxide powders were obtained via direct precipitation process, during which the industrial pure MgSO4 · 7H2O（ origined from szaibelyite） and （NH4）2C2O4 were emplyed as raw materials. The precursor and the final product Nano-meter MgO powders were characterized by IR, XRD and TEM. It belongs to cubic lattic, in sphere shape, white, stable in air. The diameter of powder is about 25 - 35 nm and homogenous. The mechanism and factors that influences the quality of final produce, such as reaction concentration, feeding fashion, calcining temperature were investigated.
出处
《洛阳师范学院学报》
2009年第2期72-74,共3页
Journal of Luoyang Normal University
关键词
超细粉体
氧化镁
直接沉淀法
ultra-fine powders
magnesium oxide
characteristics
direct precipitation
