硅灰石与酸反应制备高比表面积SiO2的实验研究

摘要

本文在用硅灰石与盐酸反应制备高比表面积SiO2(比表面积大于400)的基础上，较系统地讨论了制备过程中的反应速度、反应时间、中和速度和反应最终pH值四要素对产物比表面积的影响，并初步确定了最佳实验工艺条件。%Based on preparation of SiO2 with high specific surface area(more than 400m2/g)byreaction between wollastonite and hydrochloric acid,this paper mainly disscussed four factorsthat influence on specific surface area of SiO2 i. e. reaction rate,reaction time,neutralizationspeed and the ultimate pH value,and the optimal technological conditions were preliminarilyestablished.