| abstract |
A silica alumina sol that is stable at high concentrations and has good dispersibility in a matrix component, and a method of producing the same. Organosilicon alumina sol is used to remove cations (alkali metal ions) derived from the raw materials of manufacture in silica alumina sol, reduce silica ions, and adjust the surface negative charge to a predetermined range. The compound is adsorbed onto the particle surface in advance, and then hydrolyzed and surface treated. |