METHOD OF PRODUCING A CATALYST FOR USE IN A FISCHER-TROPSCH REACTOR Russian patent published in 2020 - IPC B01J23/75 B01J37/25 B01J37/18 C10G2/00 

FIELD: chemical or physical processes.

SUBSTANCE: disclosed is a method of producing a catalyst for use in a Fischer—Tropsch reaction, in which the following sequential steps are carried out: a) obtaining a support impregnated with a cobalt nitrate solution, b) oxidising said support impregnated with a cobalt nitrate solution at a calcination temperature in range of 410 °C to 450 °C, to obtain a catalyst precursor containing cobalt oxides, c) reducing gas containing at least 99 vol % hydrogen and less than 200 ppmv water is fed, d) contacting said catalyst precursor with reducing gas by circulating a stream of reducing gas over a layer of said catalyst precursor so as to reduce cobalt oxides to cobalt metal to obtain a reduced catalyst and a stream of reducing gas loaded with water, wherein said catalyst precursor is brought into contact with reducing gas at pressure in range from 0 to 1.5 MPa (g), preferably from 0.3 to 1 MPa (g) and at a final reduction temperature in range of 400 °C to 450 °C, and the catalyst precursor is maintained at the final reduction temperature for 16 hours, e) reducing water content in the stream of reducing gas recovered at step d), which is loaded with water, so as to obtain a stream of reducing gas containing less than 200 ppmv water, then f) returning at least a portion of the stream of reducing gas to step d), and wherein content of water in reducing gas is maintained at step d) at a level of less than 10000 ppmv, and step d) is carried out at a final reduction temperature lower than calcination temperature.

EFFECT: technical result is providing an improved method of reducing catalyst.

11 cl, 4 tbl, 5 ex, 1 dwg