Comprehensive Investigation of the Features of Molecular Composition and Supramolecular Structure of Coal at Different Metamorphism Stages
A. V. OBUKHOVA1,2, L. I. KUZNETSOVA1, S. S. KOSITSYNA1,2, P. N. KUZNETSOV1,2
1Institute of Chemistry and Chemical Technology SB RAS, Federal Research Center "Krasnoyarsk Scienсе Center SB RAS", Krasnoyarsk, Russia
2Siberian Federal University, School of Petroleum and Gas Engineering, Krasnoyarsk, Russia
Keywords: coals, molecular composition, supramolecular structure, swelling, sorption, diffusion
Pages: 422-432
Abstract
The features of the molecular and supramolecular structure of brown and bituminous coals at different metamorphisms stages have been determined using a complex of methods: IR spectroscopy, X-ray diffraction, the kinetics of swelling in solvents, and sorption of molecular iodine. The relations of the supramolecular structure of coals with the indicators of molecular composition are established, the evolution of coal structure in the series of metamorphism, the mechanisms of transport of solvent molecules into the volume of the organic mass of various coals are considered.
DOI: 10.15372/CSD2023487
EDN: FZWZSO
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