High-resolution gated decoupling 13C spectra of soluble materials such as coal extracts have been analysed to evaluate the carbon aromaticity if,). A correlation was found between fa and the reciprocal of the square of the shorter component in spin-spin relaxation time (Tz), which was obtained by pu
1H and 13C n.m.r. spectral characteristics of aliphatic component of coal extracts
β Scribed by Jacek Thiel; Helena Wachowska
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 498 KB
- Volume
- 68
- Category
- Article
- ISSN
- 0016-2361
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Three H-Coal liquids, ASO, ASB, and VSO, have been characterized by quantitative FT-n.m.r. spectroscopy. FT-parameters were chosen to allow determination of aromatic:aliphatic carbon ratios to within 1% and 2% error of the theoretical and the absolute number of aromatic and aliphatic carbons in a si