Patent ID: 11866340

Abstract:
A silica particle includes: a quaternary ammonium salt, in which the following expressions are satisfied, 0.90≤FBEFORE/FAFTER≤1.10, and 5≤FSINTERING/FBEFORE≤20, in which FBEFORE represents a maximum frequency value of a pore diameter of 2 nm or less in the silica particles before washing, which is obtained from a pore distribution curve in a nitrogen gas adsorption method, FAFTER represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles after washing, which is obtained from the pore distribution curve in the nitrogen gas adsorption method, and FSINTERING represents a maximum frequency value of the pore diameter of 2 nm or less in the silica particles before washing and after sintering at 600° C., which is obtained from the pore distribution curve in the nitrogen gas adsorption method.