RELATIONSHIPS IN FORMATION OF SILICA-GELS BY THE COAGEL PROCEDURE ANDPREPARATION OF A WIDE VARIETY OF MATERIALS THEREOF

A study is made of the physicochemical principles of genesis and regul ation of properties of silica gels formed by the coagel procedure in t he presence of salt coagulators. Specific features of the texture of s uch silicas are elucidated, and a mechanism of formation of the silica s, which takes account of the peculiar features of mass transfer of lo w-molecular-weight forms of silicic acid under simultaneous proceeding of the key stages of the SiO2 synthesis, is proposed.