公开(公告)号：EP0505583B1

公开(公告)日：1996-03-20

申请号：EP91919289.8

申请日：1991-10-11

申请人： FUJI-DAVISON CHEMICAL LTD.

发明人： MATSUI, Takashi, Fuji-Davison Chemical Ltd. ,  WATANABE, Nobuki, Fuji-Davison Chemical Ltd. ,  ARIMURA, Masayuki, Fuji-Davison Chemical Ltd. ,  KANEMARU, Eiji, Fuji-Davison Chemical Ltd. ,  HORINOUCHI, Yuzo, Fuji-Davison Chemical Ltd. ,  ITO, Mutsuhiro, Fuji-Davison Chemical Ltd.

IPC分类号： C01B33/152

CPC分类号： C01B33/152

摘要： A process for producing scaly or acicular silica gel having relatively large and controlled pore volume and specific surface, which comprises freezing silicic acid sol to deposit the crystallized sol in a gap between the faces of solvent crystals to thereby form frozen scaly or acicular silica gel, thawing the frozen silica hydrogel, conducting hydrothermal polymerization thereof, and drying the resultant hydrogel. This process is advantageous in that the shape control is possible with inexpensive silica sol by controlling the gelation time of the sol, that freeze drying is unnecessary, and that the physical properties of the silica gel can be controlled by conducting thawing, water washing and hydrothermal polymerization after freezing.

公开(公告)号：EP0505583A1

公开(公告)日：1992-09-30

申请号：EP91919289.8

申请日：1991-10-11

申请人： FUJI-DAVISON CHEMICAL LTD.

发明人： MATSUI, Takashi, Fuji-Davison Chemical Ltd. ,  WATANABE, Nobuki, Fuji-Davison Chemical Ltd. ,  ARIMURA, Masayuki, Fuji-Davison Chemical Ltd. ,  KANEMARU, Eiji, Fuji-Davison Chemical Ltd. ,  HORINOUCHI, Yuzo, Fuji-Davison Chemical Ltd. ,  ITO, Mutsuhiro, Fuji-Davison Chemical Ltd.

IPC分类号： C01B33/152

CPC分类号： C01B33/152

摘要： A process for producing scaly or acicular silica gel having relatively large and controlled pore volume and specific surface, which comprises freezing silicic acid sol to deposit the crystallized sol in a gap between the faces of solvent crystals to thereby form frozen scaly or acicular silica gel, thawing the frozen silica hydrogel, conducting hydrothermal polymerization thereof, and drying the resultant hydrogel. This process is advantageous in that the shape control is possible with inexpensive silica sol by controlling the gelation time of the sol, that freeze drying is unnecessary, and that the physical properties of the silica gel can be controlled by conducting thawing, water washing and hydrothermal polymerization after freezing.

摘要翻译： 一种制备鳞片状或针状硅胶的方法，其具有相对较大且受控的孔体积和比表面积，其包括冷冻硅酸溶胶以将结晶的溶胶沉积在溶剂晶体的表面之间的间隙中，从而形成冷冻的鳞片状或针状硅胶， 解冻冷冻硅胶水凝胶，进行水热聚合，并干燥所得水凝胶。 该方法的优点在于，通过控制溶胶的凝胶化时间，廉价的硅溶胶可以进行形状控制，不需要冷冻干燥，并且可以通过解冻，水洗和水热来控制硅胶的物理性能 冷冻后聚合。