ZEOLITE CATALYST AND THE METHOD OF NO HYDROGEN DEWAXING OF HYDROCARBON RAW MATERIAL WITH ITS USE Russian patent published in 2018 - IPC B01J29/40 C10G11/05 

FIELD: technological processes.

SUBSTANCE: group of inventions relates to zeolite-containing materials and their use as catalysts. Catalyst for the non-hydrogen de-waxing of a hydrocarbon feedstock, in particular diesel fuel, based on a granular mixture of ZSM-5 aluminosilicate zeolite with a SiO₂/Al₂O₃, equal to 23–80, with a binder (Al₂O₃ or SiO₂), modified by zinc fluoride to 1.5–5.0 % zinc, characterized by a residual content of sodium ions of less than 0.1 % is proposed. Zinc fluoride modification is carried out in two steps – ion exchange in an aqueous solution of a zinc salt, then the resulting zinc zeolite form is treated with an aqueous solution of ammonium fluoride, wherein the said modification is carried out twice. Method of dewaxing a hydrocarbon feedstock using the inventive catalyst is also provided.

EFFECT: implementation of the proposed group of inventions provides increased activity and stability of the catalyst, an increase in the yield of a qualitative target product in the dewaxing of raw materials with an increase in process productivity.

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