公开(公告)号：EP0255702A2

公开(公告)日：1988-02-10

申请号：EP87111059.9

申请日：1987-07-30

申请人： Montedison S.p.A.

发明人： Albizzati, Enrico ,  Mello Ceresa, Emiliano ,  Zaninetta, Luciano

IPC分类号： C01B13/14

CPC分类号： C01B13/328 ,  C01B33/126 ,  C01B35/1036 ,  C01F7/34 ,  C01F7/36 ,  C01G23/053 ,  C01G23/0536 ,  C01G25/02 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2004/62

摘要： The present invention relates to a process for preparing spheroidal particles of metal oxides having an average diameter smaller than 3 microns, which process is characterized in that an emulsion is prepared of a hydrolyzable liquid metal com­pound in a perfluoropolyether and the emulsion is reacted with water, water vapour or a mixture, in any ratio, of water with a liquid miscible or immiscible with it, which does not inter­fere with the reaction of the metal compound with water, thus, obtaining a metal oxide hydrate which is separated, subse­quently dried and calcined.

摘要翻译： 本发明涉及一种制备平均直径小于3微米的金属氧化物的球形颗粒的方法，该方法的特征在于在全氟聚醚中制备可水解液态金属化合物的乳液，并将乳液与水反应， 水蒸汽或任何比例的水与液体混溶或不混溶的混合物，其不会干扰金属化合物与水的反应，从而获得分离的，随后干燥和煅烧的金属氧化物水合物 。

公开(公告)号：EP0255702A3

公开(公告)日：1989-10-11

申请号：EP87111059.9

申请日：1987-07-30

申请人： Montedison S.p.A.

发明人： Albizzati, Enrico ,  Mello Ceresa, Emiliano ,  Zaninetta, Luciano

IPC分类号： C01B13/14

CPC分类号： C01B13/328 ,  C01B33/126 ,  C01B35/1036 ,  C01F7/34 ,  C01F7/36 ,  C01G23/053 ,  C01G23/0536 ,  C01G25/02 ,  C01P2004/32 ,  C01P2004/61 ,  C01P2004/62

摘要： The present invention relates to a process for preparing spheroidal particles of metal oxides having an average diameter smaller than 3 microns, which process is characterized in that an emulsion is prepared of a hydrolyzable liquid metal com­pound in a perfluoropolyether and the emulsion is reacted with water, water vapour or a mixture, in any ratio, of water with a liquid miscible or immiscible with it, which does not inter­fere with the reaction of the metal compound with water, thus, obtaining a metal oxide hydrate which is separated, subse­quently dried and calcined.