METHOD OF PREPARING AROMATIZATION CATALYST OF HYDROCARBONS Russian patent published in 1995 - IPC

FIELD: petroleum refining. SUBSTANCE: ceolite is synthesized (KL-type) by means of crystallization of mixture with mole relations of silicon dioxide and aluminium oxide as following: the latter 8-12, potassium oxide and silicon dioxide 0.28-0.30, water and potassium oxide 30-60. Process is conducted in autoclave at 150 deg C and saturated vapor pressure during 48 hours. After that mother liquor is filtered. Ceolite precipitate is washed with distilled water till achieving 7-7.5 pH of washing water and dried onto the filter. Then binder is added to ceolite aluminium hydroxide and nitric acid. Ectrudates are formed, than dried and calcined. Carrier achieved is impregnated by platinum ammoniate solution, and catalyst is subjected to drying. The catalyst has 0.8 mass percents of platinum, 25 mass of binder - aluminium oxide, and KL-type ceolite is the rest. EFFECT: improved efficiency. 1 tbl