Patent ID: 9221692
Filing Date: 2015-12-29
Classification: B01J,C01B,C04B,Y02P

Abstract:
1. A process for preparing a silicate, the silicate comprising silicon, oxygen and at least one heteroatom selected from the group consisting of Ga and Zn, the process comprising: (1) preparing a colloidal aqueous solution from at least one silicon dioxide source, at least one tetraalkylammonium compound comprising R (2) hydrothermally crystallizing by heating the colloidal aqueous solution obtained in (1) to a temperature in the range from greater than the boiling temperature of the colloidal aqueous solution under the selected pressure to 180° C. at standard pressure, thereby obtaining a suspension comprising at least one silicate comprising silicon, oxygen and at least the heteroatom selected from the group consisting of Ga and Zn, wherein the colloidal aqueous solution obtained in (1), before heating in (2), comprises silicon, calculated as SiO SiO