中文摘要：

以MgSO4.7H2O、NaOH为原料,采用丁醇-变频微波-水热法制备了优质碱式硫酸镁晶须。样品用XRD,SEM,TEM,TG-DTA进行了物相、粒度、晶体形貌结构和热分析。考察了传统的水热法、变频微波-水热法、丁醇-水热法、丁醇-变频微波-水热法四种工艺对碱式硫酸镁晶须晶形、结构、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25%的丁醇,并采用变频微波加热,调节微波炉反应温度T=130℃,反应时间t=9 h时可获得粒度分布均匀、晶形好、分散性好、表面光滑、缺陷少的优质碱式硫酸镁晶须。透射电镜下估算晶须直径约为0.8~1.1μm,长度约为60~100μm.初步分析了微波、丁醇对碱式硫酸镁晶须生长的作用。

英文摘要：

Using MgSO4·7H2O、NaOH as raw material,high-quality hydrous magnesium oxysulfate whisker was sythesized via butanol-frequency-microwave-hydrothermal.The samples were characterized by X-ray diffraction(XRD),scan electron microscope(SEM),transmission electron microscope(TEM),and thermal analysis(TG-DTA).The SEM reveales that the hydrous magnesium oxysulfate particle has whisker form with fine dispersive capability and the crystal form,as well as high purity and that the distribution of particle size is uniform...