A method for the production of silicon dioxide - aluminum oxide - hydrogels, possibly. With a content of rare earth metal oxides, and use of the resulting kogele for the preparation of catalysts

摘要

Catalytically active silica-alumina and silica-alumina-rare earth oxide cogels are prepared by reacting aluminate and silicate solutions to obtain a silica-alumina pregel, and then reacting the pregel with an acidic rare earth and/or aluminum salt solution under complete mixing conditions.