METHOD OF PREPARING CATALYST FOR GASOLINE FRACTION CONVERSION Russian patent published in 1995 - IPC

FIELD: catalyst production. SUBSTANCE: aluminium hydroxide is prepared by mixing solutions of sodium silicate and aluminium sulfate followed by washing precipitated aluminium hydroxide with water, peptization with hydrochloric acid up to pH 3-4 at 85-150 C for 0.5-2 h. Ammonium molybdate, zeolite NH₄Y (silicate module is 4.5) were added to the prepared paste at concentration 2 wt.-% Then high-silicon zeolite (at pentasil structure, silicate module is 32-70, in palladium form at palladium content 0.6-2 wt.-%) is added at concentration 20-70% Then mixture is homogenized, evaporated up to the moisture 42-47% formed to extrudates which were dried and calcined at 500-520 C for 3-4 h. EFFECT: improved method of catalyst preparing. 1 tbl