Burchaк O.V., Balalaev O.К., Trachevsky V.V. The coal aromaticity coefficient comparison during carbonization

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Parent Category: Geo-Technical Mechanics, 2015

Category: Geo-Technical Mechanics, 2015, Issue 124

 

Geoteh. meh. 2015, 124, 208-215

THE COAL AROMATICITY COEFFICIENT COMPARISON DURING CARBONIZATION

¹Burchaк O.V., ¹Balalaev O.К.

IGTM NAS of Ukraine

¹Trachevsky V.V.

TС NAS of Ukraine

UDC 539.2:552.122.08

Abstract. The article focused on the development of new approaches in the study of the molec-ular structure of coal.

The approach is based on the calculation of the coefficient of coal substance aromaticity with three parallel independent physical methods: the method of nuclear magnetic resonance in the car-bon isotope 13C, electron spin resonance of paramagnetic centers and infrared spectroscopy stretch-ing vibrations of hydrogen atoms in the structure of coals of different metamorphic grade.

Cross-analysis of the data showed that the changes in the molecular structure of coal substance caused by global carbonization processes. All three of the structural method, directly or indirectly, share the carbon in the conjugated system (sp2-hybridization) of carbon sp3-hybridization. Inde-pendent physical studies have shown that under the influence of geodynamic factors (pressure and temperature), changes in the molecular structure of the carbon material go in the same direction.

Keywords: мolecular structure, aromatic, carbonization, physical methods.

 

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About the authors

Burchak Оlexander Vasilovich, Candidate of Technical Sciences (Ph. D.), Senior Researcher, Senior Researcher in Department of Geology of Coal Beds at Great Depths, M.S. Polyakov Institute of Geotechnical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), This email address is being protected from spambots. You need JavaScript enabled to view it. .

Trachevsky Vladimir Vasilovich, Candidate of Сhemical Sciences (Ph. D.), Head of Laboratory of synthesis and diagnostics of nanosestems and nanomateials in Technical center of the National Academy of Science of Ukraine (TC, NASU), Kiev, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Balalayev Оlexander Kostyantynovich, Candidate of Chemical Sciences (Ph.D.), Senior Researcher, Senior Researcher in Department of Mineral Mining at Great Depths, M.S. Polyakov Institute of Geotech-ISSN 1607-4556 (Print), nical Mechanics under the National Academy of Science of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

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