| abstract |
An organic polymer composition or a silicon powder, which is a powder having a large specific surface area, a low primary particle agglomeration degree, and a poor three-dimensional structure in which primary particles and secondary particles are connected. To provide a titania-silica mixed crystal particle which can be easily dispersed and suspended in a coalesced composition, a method for producing the same, and a use thereof. SOLUTION: Gaseous titanium halide and silicon halide heated to 600 ° C. or more are decomposed in the presence of oxygen or water vapor heated to 600 ° C. or more, and the obtained powder is heated at 300 to 600 ° C. After reducing the hydrogen halide concentration of the powder to 1.0% by mass or less, the powder is charged into a container having rotating blades and subjected to a stirring process of rotating at a peripheral speed of 4 m / s or more and 60 m / s or less. And a method for producing titania-silica mixed crystal particles. A titania-silica mixed crystal particle having a BET specific surface area of 10 to 200 m 2 / g and a bulk density of 0.15 g / cm 3 to less than 0.8 g / cm 3 . [Selection diagram] None |