摘要：以硅灰石、盐酸、PEG和水为基本原料制备多孔SiO₂ 粉体。经ST - 0 3A型表面孔径测定仪测定 ,该粉体比表面积可达 40 0～ 6 0 0m2 /g ,经NSKC - 1A颗粒分析仪测定 ,该粉体的中位径为 6～ 12 μm

关键词：硅灰石；多孔SiO2粉体；比面积

Abstract：The porous silica powder is prepared basing on wollastonite,hydrochloric,PEG and water.The specific surfac area of this powder is 400～600m 2/g through the instrument of ST-03A,and the median diameter of this powder is 6～12μm.

Keywords：wollastonite; porous silica powder; specific surface area