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AssigneeJGC Catalysts and Chemicals Ltd.
InventorsYuji Tawarazako, Michio Komatsu, Kazuhiro Nakayama, Yukihiro Iwasaki, Yoshinori Wakamiya, Shota Kawakami, Shinya Usuda
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Disclosed is a silica-based composite fine particle dispersion including a silica-based composite fine particle which comprises a mother particle containing amorphous silica as a main component with a child particle containing crystalline ceria as a main component on a surface thereof. Features of the silica-based composite fine particle include a silica to ceria mass ratio of 100:11 to 316, and when subjected to X-ray diffraction, only the crystalline phase of ceria is detected, and when subjected to X-ray diffraction for measurement, the crystalline ceria has a crystallite diameter of 10 to 25 nm.
A silica-based composite fine particle dispersion, child particles primarily composed of crystalline ceria being formed on surfaces of mother particles primarily composed of amorphous silica, the silica-based composite fine particle dispersion comprising silica-based composite fine particles having an average particle size of 50 to 350 nm and having characteristic features of [1] to [3]:
A method of manufacturing a silica-based composite fine particle dispersion comprising Steps 1 to 3:
Dependencies are inferred from the claim text.