Patent ID: 6858170
Filing Date: 2005-02-22
Classification: B01J,C10G

Abstract:
1. A process for preparing silica-alumina catalyst carrier particles, said process comprising: (a) mixing an aluminum compound with a silicon compound to obtain a solution, said aluminum compound being chosen from the group consisting of aluminum alcoholate and aluminum carboxylate and said silicon compound being chosen from the group consisting of silicon alcoholate and siloxane compounds; (b) hydrolyzing said solution under acidic conditions at a temperature of between 50° C. and 150° C.; (c) cooling said hydrolyzed solution to obtain a gel; (d) processing said gel to obtain a paste by eliminating the excess volatile compounds, including acid and water; (e) extruding said paste into extrudate particles; and (f) calcining said extrudate particles at a temperature of between 300° C. and 700° C. for at least two hours to remove organic materials and moisture to produce said catalyst carrier particles.