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Polyene model of coal structure and metamorphism

Polyene model of coal structure and metamorphism Eight coal ranks (G, GZhO, GZh, K, KO, KS, and T) are investigated by IR spectroscopy in the range between 1800 and 650 cm–1, with polynomial decomposition of the spectra obtained. The similarities and differences in the IR spectra for two series of coal are noted: specifically, fat coal (Zh, GZh, GZhO, and G) and coking coal (K, KO, KS, and T). For both series, we consider the regions of the spectra containing narrow absorption bands. On passing from Zh and G coal in the fat set and from K to T coal in the coking set, the intensity of the IR absorption bands at 1450 and 1370 cm–1 declines, on account of deformation C‒H vibrations of the CH2 and CH3 groups, while the absorption of oxygen-bearing groups appears. These experimental data are inconsistent with accepted concepts regarding the metamorphism on passing from gas coal (rank G) to lean coal (rank T). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Coke and Chemistry Springer Journals

Polyene model of coal structure and metamorphism

Coke and Chemistry , Volume 60 (1) – Apr 28, 2017

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References (26)

Publisher
Springer Journals
Copyright
Copyright © 2017 by Allerton Press, Inc.
Subject
Chemistry; Industrial Chemistry/Chemical Engineering
ISSN
1068-364X
eISSN
1934-8398
DOI
10.3103/S1068364X17010021
Publisher site
See Article on Publisher Site

Abstract

Eight coal ranks (G, GZhO, GZh, K, KO, KS, and T) are investigated by IR spectroscopy in the range between 1800 and 650 cm–1, with polynomial decomposition of the spectra obtained. The similarities and differences in the IR spectra for two series of coal are noted: specifically, fat coal (Zh, GZh, GZhO, and G) and coking coal (K, KO, KS, and T). For both series, we consider the regions of the spectra containing narrow absorption bands. On passing from Zh and G coal in the fat set and from K to T coal in the coking set, the intensity of the IR absorption bands at 1450 and 1370 cm–1 declines, on account of deformation C‒H vibrations of the CH2 and CH3 groups, while the absorption of oxygen-bearing groups appears. These experimental data are inconsistent with accepted concepts regarding the metamorphism on passing from gas coal (rank G) to lean coal (rank T).

Journal

Coke and ChemistrySpringer Journals

Published: Apr 28, 2017

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