Study of the porous structure of carbon sorbents based on Kuzbass coal at various stages of metamorphism

The work is devoted to the investigation of the porous structure of carbon sorbents prepared on the basis of long-flame, gas, low-caking and lean coal of Kuzbass. Carbon sorbents were obtained by alkaline activation with potassium hydroxide at 800 °C and a KOH/coal (RKOH) ratio of 0.5 g/g. Using the...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-01, Vol.1749 (1), p.12025
Main Authors: Zykov, I. Yu, Dudnikova, Y. N., Fedorova, I.N., Ismagilov, R.Z., Mikhaylova, E. S.
Format: Article
Language:English
Subjects:
Caking
Carbon
Coal
Low temperature
Metamorphism
PCB
Physics
Polychlorinated biphenyls
Potassium hydroxides
Sorbents
Specific surface
Surface area
Surface layers
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Summary:The work is devoted to the investigation of the porous structure of carbon sorbents prepared on the basis of long-flame, gas, low-caking and lean coal of Kuzbass. Carbon sorbents were obtained by alkaline activation with potassium hydroxide at 800 °C and a KOH/coal (RKOH) ratio of 0.5 g/g. Using the method of low-temperature nitrogen adsorption (analyzer ASAP-2400), the values of the textural characteristics of carbon sorbents based on coal of different stages of metamorphism were determined: pore volume, micropore volume and specific surface area. It is shown that the carbon sorbents obtained in this work are predominantly microporous (more than 80% by volume). A carbon sorbent based on long-flame coal has the greatest texture characteristics; its specific surface area is 1220 m2/g and a pore volume of 0.54 cm3/g.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1749/1/012025