申请人:REDCO N.V.
公开号:EP0159578A2
公开(公告)日:1985-10-30
Amorphous, approximately spherical silica particles prepared by the acidic hydrolysis of an approximately spherical synthetic calcium silicate having a uniform microgranular structure on their external surfaces and a structure in the interior thereof which structure only weakly recalls the original crystal needle structure of the starting material. The average external particle size is from 15 to 80 µm, the apparent particle volume is from 1.3 to 3 cm3/g, and the specific surface area is from 250 to 800 m2/g. The silica particles are particularly suitable for use as catalyst supports.
通过酸性水解近似球形的合成硅酸钙制备的无定形、近似球形的二氧化硅颗粒,其外表面具有均匀的微颗粒结构,内部结构仅能微弱地再现起始材料的原始晶针结构。平均外颗粒尺寸为 15 至 80 微米,表观颗粒体积为 1.3 至 3 立方厘米/克,比表面积为 250 至 800 平方米/克。二氧化硅颗粒特别适合用作催化剂载体。