HYDROCRACKING CATALYST, METHOD FOR PRODUCTION THEREOF AND USE THEREOF, AND CATALYTIC DIESEL OIL HYDROCRACKING METHOD Russian patent published in 2019 - IPC B01J21/18 B01J21/12 B01J29/14 B01J29/16 B01J23/755 B01J23/24 B01J37/02 B01J37/08 C10G47/02 

FIELD: chemistry.

SUBSTANCE: present invention relates to catalytic diesel oil hydrocracking. Described is a diesel oil hydrocracking catalyst comprising a substrate, an active metal and carbon component, in which, based on the total weight of the catalyst, the content of support is 60–90 wt. %, content of active metal component in terms of metal oxides is 15–40 wt. %, and content of carbon in terms of elemental C is 1–5 wt. %, wherein the sum of components in catalyst is 100 wt. %, wherein the substrate is a silicon and aluminium oxide substrate which contains Y-type modified molecular sieves, metal in component - active metal is selected from metals - elements of group VIII and/or metals - subgroup VIB elements, carbon source is selected from gaseous or liquid carbon material; wherein content of metals - elements of group VIII in terms of metal oxides is 2–15 wt. %, and content of metals - elements of VIB subgroup in terms of metal oxides is 10–30 wt. %, on surface of catalyst atomic ratio of metals - elements of VIII group to Al is (0.2–0.5):1, and atomic ratio of metals - elements of subgroup VIB to Al is (0.4–0.8):1; wherein obtained using the method of assessing acidity by infrared spectroscopy, acidic properties of the hydrocracking catalyst are as follows: total amount of acid according to infrared spectroscopy method is 0.4–0.8 mmol/g, wherein amount of acid according to infrared spectroscopy method for strong acid with desorption temperature higher than 350 °C is 0.08 mmol/g or lower, and ratio of total amount of acid according to method of infrared spectroscopy to amount of acid based on infrared spectroscopy method for a strong acid with desorption temperature of more than 350 °C is 5–50, and describes a hydrocracking catalyst, a method for production thereof and use thereof, as well as a catalytic diesel oil hydrocracking method. Method of producing said diesel hydrocracking catalyst involves the steps of: (1) adjusting the substrate so that it is in contact with the carbon source and carbon deposition reaction takes place to form a carbonised substrate; (2) annealing the carbonised substrate in an oxygen-containing gas to form a decarburized substrate in which the carbon content is 20–80 wt. % from content of carbon in carbonised substrate, wherein content of oxygen in oxygen-containing gas is 0.5–8 vol. %, calcination temperature is 250–390 °C, and annealing time is 3.5–20 hours; (3) adding a precursor of the active metal component to the decarburized substrate and drying the decarburized substrate; and (4) treating the product obtained at step (3) by a heat treatment process. Also disclosed are use of said hydrocracking catalyst in hydrocracking reaction of diesel oil, and a method for hydrocracking catalytic diesel oil, involving: (a) pretreatment of catalytic diesel oil by hydrocracking and (b) treating the product obtained in step (a) by hydrocracking in the presence of said hydrocracking catalyst for diesel oil and hydrogen.

EFFECT: technical result is catalyst can maintain high reactivity and stability of reaction, simultaneously significantly improving output of gasoline product, total yield of liquid products and octane number of gasoline product.

14 cl, 12 ex, 5 tbl