FIELD: chemistry.
SUBSTANCE: invention relates to a catalytic composition for the conversion of raw materials containing alkyl aromatic hydrocarbons, including (a) a carrier containing (i) zeolite of a mordenite type with an average crystallite length in the direction parallel to 12-ring channels, measured by applying Scherrer equation to X-ray diffraction data, of 60 nm or less, and mesopore volume of at least 0.10 cm3/g in the amount in the range from 30 to 70% by wt. per the total weight of the carrier, (ii) zeolite of ZSM-5 type in the amount from 15 to 60% by wt. per the total weight of the carrier; and (iii) an inorganic binder in the amount in the range from 10 to 40% by wt. per the total weight of the carrier; where zeolite of ZSM-5 type has an average numerical crystal size in the range from 25 to 100 nm, as defined by X-ray diffraction, and (b) from 0.1 to 10% by wt. of platinum, wherein the inorganic binder contains titanium dioxide. The invention also relates to a method for the preparation of a catalyst composition and to a method for the conversion of initial raw materials containing alkyl aromatic hydrocarbons.
EFFECT: providing an improved catalyst that can be used in the conversion of alkyl aromatic compounds.
8 cl, 2 tbl, 2 ex
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Authors
Dates
2022-02-02—Published
2017-12-07—Filed