METHOD FOR PREPARING MESOPOROUS ULTRAFINE SILICA HAVING ANTI-BLOCKING EFFECT BY ADDING ADEQUATE AMOUNT OF NON-INOINC SURFACTANT

摘要

PURPOSE: To provide a method for preparing mesoporous ultrafine silica powder, which is able to remove impurities contained in pores and provide mesoporous ultrafine silica powder having excellent anti-blocking effect. CONSTITUTION: The method comprises the steps of: (a) neutralizing sodium silicate with an inorganic acid solution containing 0.01-0.2 parts by weight of non-ionic surfactant as a mineralizing agent regarding 100 parts by weight of the sodium silicate; and (b) separating precipitate obtained from the step (a).