✦ LIBER ✦

ENDOR study of coals

✍ Scribed by N.D. Yordanov; S. Duber; M. Zdravkova; T. Budinova

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 349 KB
Volume: 69
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(90)90223-d

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✦ Synopsis

Coals with carbon contents of 76 and 82 wt%, respectively, and their mixtures with ethylenediamine, were investigated by 'H ENDOR spectroscopy. In all cases the spectra obtained had a single line centred on the free proton frequency and one or two pairs of lines indicating a weak electron-nuclear interaction. The spectra for the coal/ethylenediamine mixtures differed from those for coals in a decreased value of splitting caused bv the electron-nuclear interaction. Differences in the splitting values observed were explained in terms of coal swelling by solvent.

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