METHOD OF PRODUCING SYNTHESIS GAS Russian patent published in 2025 - IPC C01B3/38 B01J21/02 B01J21/10 B01J23/56 B01J23/58 B01J37/04 B01J37/08 B01J23/75 B01J23/78 B01J23/89 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical engineering, namely to high-temperature catalytic oxidative methods of converting methane to obtain synthesis gas – a mixture of H₂ and CO, which is a starting material for producing hydrogen, motor fuels, methanol, dimethyl ether, aldehydes, alcohols and other valuable substances. Described is a method of producing synthesis gas by high-temperature catalytic oxidative conversion of methane, by feeding an initial gas mixture containing a mixture of methane and oxygen into a reactor with a catalyst at an elevated temperature, wherein a catalyst containing magnesium, aluminium, platinum, cobalt and oxygen, obtained by dissolving a platinum and cobalt containing heterometallic complex in water, addition of aluminium-magnesium hydrotalcite powder to the obtained solution, evaporation of water, calcination of the obtained mixture while increasing the temperature from room temperature to 800 °C for 3 hours and holding at this temperature for 2 hours, wherein heterometallic complex compound of platinum and cobalt and aluminium-magnesium hydrotalcite are taken in amounts that allow to obtain catalyst with composition, wt.%: magnesium (Mg) 38.8; aluminium (Al) 15.5; platinum (Pt) 3.3; cobalt (Co) 0.94; oxygen (O) – balance. Obtained catalyst is placed in a vertical flow-type quartz reactor on a quartz fibre substrate, the free volume of the reactor in front of the catalyst is filled with quartz chips, catalyst is heated in nitrogen flow to 900 °C, after which the supply of nitrogen is turned off and a mixture of methane and oxygen is fed into the reactor, while maintaining the temperature of catalyst from 800 to 900 °C.

EFFECT: increased efficiency of H₂ and CO with lower energy consumption, reduced power consumption during catalyst synthesis, possibility to quickly bring the catalyst to optimal mode of its operation without inappropriate consumption of raw material – methane and oxygen.

3 cl, 1 tbl, 13 ex