发明公开
EP0255702A2 Process for preparing fine particles of metal oxides
失效
Verfahren zur Herstellung von feinen Metalloxidteilchen。
- 专利标题： Process for preparing fine particles of metal oxides
- 专利标题（中）： Verfahren zur Herstellung von feinen Metalloxidteilchen。
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申请号： EP87111059.9申请日： 1987-07-30
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公开(公告)号： EP0255702A2公开(公告)日： 1988-02-10
- 发明人: Albizzati, Enrico , Mello Ceresa, Emiliano , Zaninetta, Luciano
- 申请人： Montedison S.p.A.
- 申请人地址： 31, Foro Buonaparte I-20121 Milan IT
- 专利权人： Montedison S.p.A.
- 当前专利权人： Montedison S.p.A.
- 当前专利权人地址： 31, Foro Buonaparte I-20121 Milan IT
- 代理机构： Barz, Peter, Dr.
- 优先权： IT2133586 19860731
- 主分类号： C01B13/14
- IPC分类号： C01B13/14
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.
公开/授权文献
- EP0255702A3 Process for preparing fine particles of metal oxides 公开/授权日：1989-10-11
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