ZEOLITE-CONTAINING CATALYST, METHOD OF PRODUCING SAID CATALYST AND METHOD OF CONVERTING STRAIGHT-RUN GASOLINE FRACTION TO HIGH-OCTANE GASOLINE COMPONENT WITH LOW BENZENE CONTENT

摘要

FIELD: chemistry.;SUBSTANCE: invention relates to zeolite-containing catalysts. Described is a zeolite-containing catalyst for converting a straight-run gasoline fraction to a high-octane gasoline component with low benzene content, which contains high-silica zeolite with H-ZSM-5 type high-silica zeolite structure with silica modulus SiO₂/Al₂O₃=30-50, in amount of 97.0-99.0 wt % and a modifying component which is at least one metal from the group: copper, tungsten, molybdenum, which is introduced into the high-silica zeolite in form of nanopowder of said metals in amount of 1.0-3.0 wt %; the catalyst is formed during thermal treatment. Described is a method of producing said catalyst, characterised by that the H-ZSM-5 type high-silica zeolite with silica modulus SiO₂/Al₂O₃=30-50 is obtained via hydrothermal crystallisation of the reaction mixture at 120-180°C for 1-6 days, which contains sources of silicon oxide, aluminium oxide, alkali metal oxide, hexamethylene diamine and water, with further mixing of a high-silica zeolite with metal nanopowder obtained by electric blasting the wire of the metal in a medium of argon, followed by mechanochemical treatment, moulding the catalyst mass, drying and calcination. Described is a method of converting a straight-run gasoline fraction to a high-octane gasoline component with low content of benzene in the presence of the catalyst described above, wherein the conversion process is carried out at 350-425°C, volume rate of 1.0-2.0 h^-1 and pressure 0.1-1.0 MPa.;EFFECT: high activity and selectivity of the catalyst.;4 cl, 1 tbl, 6 ex