Investigation of Carbon Frame Imperfection in the Products of Pyrolysis of Low-Metamorphised Coals in an Inert Environment
A. P. NIKITIN1, E. S. MIKHAYLOVA1, O. M. GAVRILYUK1, Z. R. ISMAGILOV1,2
1Federal Research Center of Coal and Coal Chemistry, Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russia
2Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Keywords: coal of low metamorphism stage, semi-coke, carbon frame, Raman spectroscopy
Pages: 273-278
Abstract
Two models of deconvolution of the first-order scattering Raman spectra of semi-coking solid products and initial coals of low metamorphism stage are compared. The results obtained by analyzing the spectra within both models are consistent with each other. It is shown that the I D/ I G parameter loses its informational value if additional functions describing the vibrations of C-C bonds with different types of carbon atom hybridization are used. Graphitization degree and the proportion of edge defects in graphite planes may be considered as the main numerical characteristics of imperfection in the carbon frame of low-metamorphised coal and the products of its pyrolysis.
DOI: 10.15372/CSD2022382
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