| 摘要 |
1511869 Porous silica article BAYER AG 3 Sept 1975 [10 Sept 1974] 36339/75 Heading C1A [Also in Divisions B1 and C2] A shaped silica article for a catalyst support has a pore volume, in the pore radius range 20-120 Š, of 0À40 to 1À20 ml./g., and may be made by mixing a silica gel powder having this property with water or an inorganic sol., shaping, drying if necessary, and heating at 100-1000‹ C. |
