Ultrafine particulate titanium oxide and production process thereof

   
   

Particulates, particularly ultrafine particulates of titanium oxide having a BET specific surface area of from about 3 m.sup.2 /g to about 200 m.sup.2 /g, preferably from about 5 m.sup.2 /g to about 200 m.sup.2 /g, and more preferably from about 10 m.sup.2 /g to about 200 m.sup.2 /g are obtained using a vapor phase process of producing titanium oxide by oxidizing titanium tetrachloride with an oxidizing gas at a high temperature, wherein a titanium tetrachloride-containing gas and an oxidizing gas are reacted after preheating each gas at about 500.degree. C. or more. The particulates, particularly ultrafine particulates of titanium oxide have less aggregation and have highly excellent dispersibility.

Los particulates, particularmente particulates del ultrafine del óxido titanium que tiene un área superficial específica de la APUESTA de cerca de 3 m.sup.2 /g a cerca de 200 m.sup.2 /g, preferiblemente de cerca de 5 m.sup.2 /g a cerca de 200 m.sup.2 /g, y preferiblemente de cerca de 10 m.sup.2 /g a cerca de 200 m.sup.2 /g son obtenidos usando un proceso de la fase del vapor de producir el óxido titanium oxidando el tetracloruro titanium con un gas que oxida en una temperatura alta, en donde un gas tetracloruro-que contiene del titanio y un gas que oxida se reaccionan después de precalentar cada gas en alrededor 500.degree. C. o más. Los particulates, particularmente particulates del ultrafine del óxido titanium tienen menos agregación y tienen dispersabilidad altamente excelente.

 
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