Patent ID: 8845991
Filing Date: 2014-09-30
Classification: C01B,C01P

Abstract:
1. A method of forming a silica-based product comprising: (a) providing a silica containing precursor (SCP) contained in solution that has a pH less than or equal to a pH of 7; (b) doping the SCP with one or more metal species, wherein said doping occurs when the solution has a pH less than or equal to a pH of 7; (c) adjusting the pH of the solution to greater than 7; (d) adding an effective amount of exogenous salt to the solution so that the conductivity of the solution is greater than or equal to 4 mS/cm, wherein said addition occurs after the pH adjustment in step 1c, wherein said addition results in a slurry of SCP; (e) optionally filtering and drying the SCP slurry; and (f) optionally reacting the dried product from step e with a functional group and optionally wherein the resultant functionalized dried product is at least one of the following; a functionalized metal oxide-doped or metal sulfide-doped silica product.