丙三醇-变频微波-水热法制备氢氧化镁晶须  

Preparation of Magnesium Hydroxide Whisker by Glycerol-Frequency Conversion Microwave-Hydrothermal Process

作　　者：吴健松[1] 肖应凯[2] 陈浪英[1] 陈小微[1] 

机构地区：[1]湛江师范学院化学科学与技术学院,湛江524048 [2]中国科学院盐湖资源与化学重点实验室,中国科学院青海盐湖研究所,西宁810008

出　　处：《高等学校化学学报》2009年第12期2354-2357,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:40776071)资助

摘　　要：以MgCl2.6H2O和NaOH为原料,采用丙三醇-变频微波-水热法制备了优质氢氧化镁晶须.采用XRD,SEM和TEM进行了物相、粒度、晶体形貌和结构分析.考察了丙三醇-变频微波-水热法工艺对氢氧化镁晶须晶形、结构及分散性的影响.实验发现,在水热反应体系中加入体积分数为15%的丙三醇,用变频微波加热,在180℃反应6h,可获得粒度分布均匀、晶形和分散性好、表面光滑及缺陷少的优质氢氧化镁晶须.在透射电镜下估算晶须直径约为0.1～0.3μm,长度约为80～110um.初步分析了变频微波和丙三醇对氢氧化镁晶须生长的作用.The magnesium hydroxide whisker with excellent quality was synthesized by glycerol-frequency conversion microwave-hydrothermal process with MgCl2·6H2O and NaOH as raw materials. The phase, granularity, structure of crystal morphology of whiskers samples were characterized by X-ray diffraction（XRD）, scanning electron microscop（SEM） and transmission electron microscop（TEM）. The effect of glycerol-frequency conversion microwave-hydrothermal process on the crystal form, structure and dispersive capability of magnesium hydroxide whisker was investigated. The results show that high quality magnesium hydroxide whiskers with symmetrical granularity, fine crystal form and dispersibility, glabrous surface, as well as little crystal defect are obtained when 15%（volume fraction） of glycerol is added and heated at 180 ℃ for 6 h. The TEM images show that the diameters of whiskers are about 0.1-0.3 μm and the length are about 80-110 μm. The influence of glycerol and frequency conversion microwave on growth of magnesium hydroxide whiskeres was investigated primarily.

关 键 词：变频微波 丙三醇 水热法 氢氧化镁晶须 

分 类 号：O614[理学—无机化学]