MICROSPHERICAL CATALYST FOR INCREASING OCTANE NUMBER OF CATALYTIC CRACKING GASOLINE AND METHOD FOR ITS PREPARATION Russian patent published in 2024 - IPC B01J29/08 B01J29/06 B01J23/10 B01J21/04 B01J21/16 B01J29/40 B01J37/02 B01J37/04 B01J37/08 B01J37/30 C10G11/05 

FIELD: oil industry.

SUBSTANCE: group of inventions relates to the oil refining industry and can be used to increase the octane number of catalytically cracked gasoline. Disclosed microspherical catalyst includes an ultrastable zeolite Y in a cation-decationated form, an MFI-type zeolite and a matrix consisting of amorphous aluminosilicate, aluminium oxide and natural clay, wherein matrix components used are modified aluminosilicate containing 0.05–0.5 wt.% oxides of rare-earth elements, modified aluminium oxide containing 0.05–0.5 wt.% oxides of rare-earth elements, and natural clay, a modified zeolite of the MFI type, with the following content of components in the catalyst, wt.%: zeolite Y 20–24; zeolite of type MFI 0.5–1; amorphous aluminosilicate 30–40; aluminium oxide 24–30; natural clay 7–24. Proposed catalyst preparation method involves ion exchanges for rare-earth elements and ammonium cations on NaY zeolite, two-step ultrastabilization of zeolite, mixing with zeolite of type MFI and matrix, components of which are used amorphous aluminosilicate, aluminium oxide and natural clay, spray drying of obtained composition with subsequent calcination, wherein amorphous aluminosilicate is modified by activation with solution of nitrate salts of rare-earth elements to content of oxides of rare-earth elements of 0.05–0.5 wt.%, aluminium oxide is modified by hydrothermal treatment in the presence of a solution of nitrate salts of rare-earth elements to content of oxides of rare-earth elements of 0.05–0.5 wt.%, zeolite of type MFI is modified by spray drying of suspension of zeolite of type MFI in solution of zinc nitrate and disubstituted ammonium phosphate, with the following content of components in the catalyst, wt.%: zeolite Y 20–24; zeolite of type MFI 0.5–1; amorphous aluminosilicate 30–40; aluminium oxide 24–30; natural clay 7–24.

EFFECT: obtaining an efficient vacuum gas oil cracking catalyst for obtaining gasoline with high octane characteristics.

8 cl, 1 tbl, 13 ex