Patent ID: 11891307
Assignee: JGC CATALYSTS AND CHEMICALS LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B  H | IPC C  H

Claim 12:
13. The method of producing the silica-based particle group including the irregularly shaped silica-based particles and the non-irregularly shaped silica-based particles according to claim 12,
wherein in the step a, the porous silica-based gel having a specific surface area of 300 to 800 m2/g is formed into the irregularly shaped porous silica-based gel-including particles having a weight-average particle size of 80 to 550 nm; and
wherein in the step b, the pores between the primary particles in the irregularly shaped porous silica-based gel-including particles are filled by the reaction with the silicic acid to adjust a specific surface area of the irregularly shaped porous silica-based gel-including particles to 100 m2/g or less, and to cause the irregularly shaped silica-based particles to grow to have a weight-average particle size of 100 to 600 nm.