【摘 要】
：
Under certain conditions of proper temperature and pH value,sodium silicate was hydrolyzed in liquid ammonia chloride,and spherical microfine SiO2 powder in mic
【机 构】
：
College of Material Science and Engineering
【出 处】
：
武汉理工大学学报（材料科学版）（英文版）
【基金项目】
：
National Innovation Foundation of China
论文部分内容阅读
Under certain conditions of proper temperature and pH value,sodium silicate was hydrolyzed in liquid ammonia chloride,and spherical microfine SiO2 powder in micrometer-size was prepared.In this experiment,the relationship between needed time and proper pH value,temperature,density ofthe solution.and its current capacity were found.The optimum conditions are pH 8.5,70℃,and the concentration of sodium silicate is O.6 mol/L for the density ofthe solution.The structure of spherical microfine silicon was charactetized by SEM andXRD.
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