FIELD: conversion of hydrocarbons. SUBSTANCE: method consists in loading of high-silica zeolite ZSN-5 in sodium form into ammonium salt solution. Suspension is heated up to 50-60 C and held under these conditions for 2 h and then subjected to filtering and washing with condensate. Then, cation exchange with ammonium sulfate is effected up to obtaining the residual content of sodium oxide Na2O not more than 0.1%. Then, it is treated with solution of zinc salt at 60 C for 2 h. Suspension is filtered and granulated with binding agent - aluminium oxide. Granules are somewhat dried out in the air for 20 h and dried. Produced granules are calcined in electric furnace at 500-550 C. Then, granules are treated with gas mixture containing, mas.%: carbon monoxide 4-8; carbon dioxide 4-12; hydrogen 10-20; oxygen 2-6; steam 5-15; the balance, nitrogen. EFFECT: higher efficiency.
