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公开(公告)号：EP3656740A2
公开(公告)日：2020-05-27
申请号：EP20152430.3
申请日：2015-06-30
发明人： Kaji, Seiji , Shimoita, Hironori , Omori, Yurie
IPC分类号： C01G23/04 , B01J20/28 , B01J20/30 , B01J35/00 , B01J35/02 , B01J35/10 , C01G23/053 , B01J20/06 , B01J21/06 , B01J37/00
摘要： Provided are: titanium oxide fine particles having small primary particle diameters and small agglomerated particle diameters; and a method for producing titanium oxide fine particles. The BET diameters of the titanium oxide fine particles are 1-50 nm; the agglomerated particle diameters thereof are 1-200 nm; and the (agglomerated particle diameter)/(BET diameter) ratio is 1-40. Titanium (oxy)chloride is hydrolyzed in an aqueous solvent, while controlling the pH range and the temperature range. Preferably, titanium (oxy)chloride is subjected to a primary hydrolysis in an aqueous solvent, and a secondary hydrolysis is subsequently carried out, while adding titanium (oxy)chloride thereto.
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公开(公告)号：EP3705455A1
公开(公告)日：2020-09-09
申请号：EP20171720.4
申请日：2015-06-30
发明人： Kaji, Seiji , Shimoita, Hironori , Omori, Yurie
IPC分类号： C01G23/04 , B01J20/28 , B01J20/30 , B01J35/00 , B01J35/02 , B01J35/10 , C01G23/053 , B01J20/06 , B01J21/06 , B01J37/00
摘要： Provided are: titanium oxide fine particles having small primary particle diameters and small agglomerated particle diameters; and a method for producing titanium oxide fine particles. The BET diameters of the titanium oxide fine particles are 1-50 nm; the agglomerated particle diameters thereof are 1-200 nm; and the (agglomerated particle diameter)/(BET diameter) ratio is 1-40. Titanium (oxy)chloride is hydrolyzed in an aqueous solvent, while controlling the pH range and the temperature range. Preferably, titanium (oxy)chloride is subjected to a primary hydrolysis in an aqueous solvent, and a secondary hydrolysis is subsequently carried out, while adding titanium (oxy)chloride thereto.
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