Abstract
The primary tars obtained by the Fischer-Schraeder method from coals described in earlier papers [1] were studied using infrared (i.r.) and 1H nuclear magnetic resonance (nmr) spectroscopy methods. With the object of achieving a broader evaluation of the properties and structure of these primary tars with increase in coalification of the parent coals—from 78 to 86% C daf, in the range from gasflame (according to Polish classification) 611-VII (according to international classification and statistical groups) to orthocoking 435-VB coals—they were distilled to the temperature of 543 K under normal pressure. Products obtained were also analysed by the i.r. and 1H nmr spectroscopy methods, while the distillates/fraction boiling up to 543 K/were additionally analysed by the gas chromatography-mass spectrometry (g.c.-m.s.) and 13C nmr methods. A comparative X-ray analysis of the coals and the semi-cokes obtained from them was also conducted.
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