Patent ID: 9057008
Filing Date: 2015-06-16
Classification: B82Y,C01B,C01P,C09K,H04R,Y10T

Abstract:
1. A porous silica material in which a plurality of silica particles are connected to one another three-dimensionally, wherein: a density of the porous silica material is less than 220 kg/m a particle diameter of the silica particles is 3.5 nm or more; and a water content of the porous silica material is 8 wt % or less; and wherein a plurality of pores are provided between the plurality of silica particles, and the pores include a plurality of cavity portions and constriction portions located between the plurality of cavity portions; and an inner diameter of the constriction portion is smaller than an inner diameter of the cavity portion and is smaller than a mean free path of an air.