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TitleCharacterization of Canadian coals by solid state nuclear magnetic resonance spectroscopy
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorFurimsky, E; Rippmeester, J
SourceCanada Centre for Mineral and Energy Technology, Energy Research Program, Energy Research Laboratories, Report 82-13 (J), 1982, 20 pages, Open Access logo Open Access
PublisherEnergy, Mines and Resources Canada
Mediapaper; on-line; digital
File formatpdf
Released1982 01 01; 2021 09 09
AbstractApparent aromaticities of a series of Canadian coals of different rank were estimated by solid state nuclear magnetic resonance spectroscopy. The aromaticities varied from 0,57 for a lignite up to 0.86 for a semi-anthracite coal. The aromaticities correlated well with fixed carbon and oxygen content of the coals as well as with the mean reflectance of the coals. Correlations were also established between aromaticities and the H/C and Ha ru /C ar ratios of the coals. Uncertainties in calculation of the hypothetical Haru/Car ratios, from experimental data were pointed out. Structural parameters of the chars derived from the coals by pyrolysis at 535°C were, also, estimated. The H/C and Haru/Car ratios of the chars were markedly lower than those of coals. This was complemented by higher apparent aromaticities of the chars compared to the coals.

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