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Investigation of the sorption activity of native coals to air oxygen
- Authors: Patrakov Y.F.1, Semenova S.A.1, Yarkova A.V.1
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Affiliations:
- Federal research center of coal and coal chemistry, Siberian branch of the Russian Academy of Sciences
- Issue: No 3 (2024)
- Pages: 3-9
- Section: Articles
- URL: https://ruspoj.com/0023-1177/article/view/677488
- DOI: https://doi.org/10.31857/S0023117724030017
- EDN: https://elibrary.ru/NCKXZT
- ID: 677488
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Abstract
The influence of the gaseous medium during sample preparation, the granulometric composition, the duration of contact with air and the stage of metamorphism on the process of oxygen sorption from the air was established. It is shown that conducting sample preparation in an air atmosphere leads to primary oxidation of the outer surface of the coals, which introduces an error in determining the oxygen sorption rate constant. Fine coal fractions (0-0.2 mm) with a more developed outer surface have increased oxygen absorption activity. The rate of oxygen sorption is maximal at the initial moment of the interaction of active carbons with air and decreases with the duration of contact. The least metamorphosed hard coals of the D brand with a high content of reactive functional groups and a developed porous structure are characterized by the greatest chemisorption activity.
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About the authors
Yu. F. Patrakov
Federal research center of coal and coal chemistry, Siberian branch of the Russian Academy of Sciences
Author for correspondence.
Email: yupat52@gmail.com
Institute of coal SB RAS
Russian Federation, Kemerovo, 650065S. A. Semenova
Federal research center of coal and coal chemistry, Siberian branch of the Russian Academy of Sciences
Email: semlight@mail.ru
Institute of coal SB RAS
Russian Federation, Kemerovo, 650065A. V. Yarkova
Federal research center of coal and coal chemistry, Siberian branch of the Russian Academy of Sciences
Email: nas.yarkova1998@yandex.ru
Institute of coal SB RAS
Russian Federation, Kemerovo, 650065References
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