FISCHER-TROPSCH SYNTHESIS CATALYST AND METHOD FOR ITS PREPARATION Russian patent published in 2025 - IPC B01J23/75 B01J31/06 C08F257/02 B01J21/08 B01J27/24 B01J35/60 B01J37/02 B01J37/04 B01J37/08 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, namely to production of heterogeneous catalysts for Fischer-Tropsch synthesis, and can be used in chemical industry for production of liquid hydrocarbons used as synthetic lubricating oils or fuels. Fischer-Tropsch synthesis catalyst containing a carrier of hypercrosslinked polystyrene and cobalt as a main component, wherein the carrier is hypercrosslinked polystyrene containing tertiary amino groups and silicon oxide, with a granule size of 440-460 mcm, an inner surface area of 800-830 m²/g, a pore size of 4-50 nm, with a specific pore volume of 0.4-0.6 cm²/g, with the following ratio of components, wt.%: cobalt and cobalt compounds – 9.5-10.5; silicon oxide – 9.5-10.5; hypercrosslinked polystyrene – 79.5-80.5. Also described is a method of producing a Fischer-Tropsch synthesis catalyst, which consists in fact that 1 g of hypercrosslinked polystyrene is treated with solution of 3-aminopropyltriethoxysilane and oxalic acid, obtained by dissolving 0.35-0.39 g of 3-aminopropyltriethoxysilane and 0.1 g of oxalic acid in 15 ml of distilled water, in hydrothermal conditions for 30 minutes at nitrogen pressure of 5.9-6.1 MPa, temperature of 195-205 °C and stirring at speed of 700 rpm, after which the mixture is cooled to temperature of 20-30 °C, filtered, washed with 10 ml of distilled water, dried in air at temperature of 100-110 °C for 3.5-4.5 hours and heated in a tubular furnace at temperature of 295-305 °C in nitrogen medium with flow rate of 10-15 ml/min for 3.5-4.5 hours, then the obtained modified support is treated with a cobalt salt solution obtained by dissolving 0.47-0.51 g of Co(NO₃)₂⋅6H₂O in 15 ml of distilled water in hydrothermal conditions for 30 minutes at hydrogen pressure of 5.9-6.1 MPa, temperature of 195-205 °C and stirring at speed of 700 rpm, obtained mixture is cooled to temperature of 20-30 °C, filtered, washed with 10 ml of distilled water, dried in air at temperature of 100-110 °C for 3.5-4.5 hours.

EFFECT: high activity, stability, selectivity with respect to hydrocarbons of the catalyst in Fischer-Tropsch synthesis.

2 cl, 3 tbl, 50 ex