Study of Fossil Coals in the Kuznetsk Basin by EPR Spectroscopy Full article
Conference |
IX Международный Российско-Казахстанский симпозиум «Углехимия и экология Кузбасса» 12-13 Oct 2020 , Кемерово |
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Journal |
Journal of Physics: Conference Series
ISSN: 1742-6588 , E-ISSN: 1742-6596 |
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Output data | Year: 2021, Volume: 1749, Number: 1, Article number : 012018, Pages count : 6 DOI: 10.1088/1742-6596/1749/1/012018 | ||||
Tags | Carbon; Ecology; Electron spin resonance spectroscopy; Electronic structure; Hydrogen; Oxygen; Paramagnetic resonance; Paramagnetism | ||||
Authors |
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Affiliations |
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Funding (2)
1 | Federal Agency for Scientific Organizations | 0352-2016-0010, V.49.1.5 (АААА-А17-117041910150-2) |
2 | Russian Foundation for Basic Research | 20-43-420019 (АААА-А20-120061890039-9) |
Abstract:
Fossil coals of the Kuznetsk Basin of varying degrees of metamorphism were studied by the method of electron paramagnetic resonance. It is shown that in the series from brown coal to anthracite, the g-factor of the EPR signal decreases, due to the aromatization of the carbon framework and a decrease in oxygen-containing and hydrogen-containing fragments in the coals. The maximum width of the EPR spectrum is observed for coals of the middle stage of metamorphism, which indicates the presence of both aliphatic and aromatic paramagnetic centers (PCs) in their structure. Also, in the series of coal metamorphism, the concentration of PCs increases. Thus, it has been shown that in the process of coal metamorphism, a change in the electronic structure occurs, associated with the rearrangement of the carbon skeleton of the organic mass of coal (OMC) and a decrease in the amount of oxygen-containing and hydrogen-containing radicals. © Published under licence by IOP Publishing Ltd.
Cite:
Nelyubina N.V.
, Nikitin A.P.
, Valnyukova A.S.
, Ismagilov Z.R.
Study of Fossil Coals in the Kuznetsk Basin by EPR Spectroscopy
Journal of Physics: Conference Series. 2021. V.1749. N1. 012018 :1-6. DOI: 10.1088/1742-6596/1749/1/012018 Scopus РИНЦ
Study of Fossil Coals in the Kuznetsk Basin by EPR Spectroscopy
Journal of Physics: Conference Series. 2021. V.1749. N1. 012018 :1-6. DOI: 10.1088/1742-6596/1749/1/012018 Scopus РИНЦ
Files:
Full text from publisher
Dates:
Submitted: | Dec 17, 2020 |
Published print: | Jan 1, 2021 |
Published online: | Jan 25, 2021 |
Identifiers:
Scopus | 2-s2.0-85101751807 |
Elibrary | 44892215 |
Chemical Abstracts | 2021:542481 |
OpenAlex | W3127185595 |
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