FIELD: various technological processes.
SUBSTANCE: invention relates to production of nanostructured porous carbon materials from lignocellulose material. Disclosed is a method of producing a nanostructured porous carbon material, comprising mixing lignocellulose material with orthophosphoric acid, drying, activation and washing, wherein for activation the acid is taken at ratio of 0.1:1–8:1 by weight, respectively, activation is carried out in an oxygen-free medium at temperature of 400–800°C duration from 0 to 4 hours, with washing the product with distilled water, wherein the output of the obtained nanostructured porous carbon material is 20–50 wt.%, obtained material has a microporous or micro-mesoporous or mesoporous structure with the following characteristics: BET specific surface area of 1,200–2,880 m2/g, specific surface area according to QSDFT model of 1,010–2,162 m2/g, total pore volume – 1.03–2.78 cm3/g, average pore size of 1.9–7.0 nm, volume fraction of mesopores is 33–83%, bulk density is 0.16–0.45 g/cm3, and phosphorus content is 0.5–5.0% by weight.
EFFECT: simple and environmentally friendly method of synthesis of nanostructured carbon materials, which have higher BET specific surface area and total pore volume.
6 cl, 2 dwg, 21 ex
Title | Year | Author | Number |
---|---|---|---|
SUPERCAPACITOR BASED ON NANOSTRUCTURED CARBON MATERIAL | 2023 |
|
RU2820678C1 |
METHOD OF PRODUCING SUPERCAPACITOR BASED ON NANOSTRUCTURED CARBON MATERIAL | 2023 |
|
RU2822272C1 |
CARBON MATERIAL | 2010 |
|
RU2446098C1 |
METHOD OF PRODUCING MICROPOROUS CARBON MATERIAL FROM LIGNOCELLULOSE MATERIAL | 2009 |
|
RU2393111C1 |
METHOD OF PRODUCTION OF THE NANOSTRUCTURE CARBONIC MATERIAL WITH THE HIGH SPECIFIC SURFACE AND MICROPOROSITY | 2006 |
|
RU2311227C1 |
METHOD OF PRODUCING MICROPOROUS CARBON MATERIAL WITH CELL-LIKE STRUCTURE | 2023 |
|
RU2818442C1 |
METHOD FOR PRODUCING ACTIVATED CARBON | 2015 |
|
RU2582132C1 |
METHOD FOR PREPARATION OF MESOPOROUS CARBON MATERIAL | 2008 |
|
RU2366501C1 |
VACUUM GAS OIL HYDROPROCESSING METHOD | 2023 |
|
RU2813488C1 |
METHOD OF OBTAINING CARBON ADSORBENT | 2012 |
|
RU2518579C1 |
Authors
Dates
2024-07-25—Published
2023-12-28—Filed