Abstract
The behavior of the paramagnetic characteristics of low-metamorphized coal and the same coal labeled with copper porphyrin during pyrolysis is interpreted in terms of the microdomain model of the structure of coal In this model vitrainized maceral is regarded as a primarily anisotropic medium and as a natural high-molecular crystal. Anisotropic units or microdomains 6.0 nm in length perform the function of recurrent structural nuclei in different coals. Each microdomain has a complex structure and contains about 15 close-packed crystallites, sequentially passing to the paramagnetic state during coal pyrolysis.
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Translated fromZhurnal Struktumoi Khimii, Vol. 38, No. 5, pp. 894–901, September-October, 1997.
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Shklyaev, A.A. ESR study of the macromolecular structure of copper-porphyrin-labeled coal. J Struct Chem 38, 748–753 (1997). https://doi.org/10.1007/BF02763887
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DOI: https://doi.org/10.1007/BF02763887