METHOD OF PRODUCING MICROPOROUS CARBON MATERIAL WITH CELL-LIKE STRUCTURE Russian patent published in 2024 - IPC C01B32/15 B01J20/28 

FIELD: various technological processes.

SUBSTANCE: invention relates to the technology of producing carbon materials and can be used in the synthesis of microporous sorbents for separating waste gas mixtures, for extraction of CO₂ from natural gas and as sorbents for adsorption and electrochemical processes. Method includes preliminary thermal treatment of asphalt at temperature of 450–550 °C in an inert atmosphere, mixing heat-treated asphalt with potassium hydroxide in weight ratio of asphalt:KOH 1:(2–4), high-temperature heat treatment of mixture at 700–800 °C in an inert atmosphere, washing the product from inorganic impurities with a solution of hydrochloric acid and water, followed by drying. Raw material used is petroleum asphalt, mixing of preliminarily heat-treated petroleum asphalt with potassium hydroxide is carried out in a planetary-centrifugal mill at acceleration of grinding bodies of 1,000 m²/s for 5–30 minutes to obtain a carbon material with a cell-like structure, specific surface area 2,088–2,935 m²/g, total pore volume 0.99–1.57 cm³/g, micropore volume 0.79–1.00 cm³/g, pore size 0.4–3.5 nm.

EFFECT: method of producing microporous carbon material with a cell-like structure, which provides high CO₂ sorption capacity of 3,6–4,1 mmol/g.

1 cl, 2 dwg, 1 tbl, 8 ex