Hydrogen was evolved as hydrogen sulphide when coal-derived solvents for liquefaction were heated with sulphur (dehydrogenation method) and their naphthene contents were quantified by titration and 13C n.m.r. analysis to estimate the amount of transferable hydrogen from hydroaromatics present in the
Determination of transferable hydrogen in coal liquefaction solvents by spectroscopic methods
โ Scribed by A.Del Bianco; M. Zaninelli; E. Girardi
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 477 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0016-2361
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For comparison, the corresponding asphaltenes separated by straight-chain pentane contained: C, 78.3; H, 7.9; N, 1.3; S, 11.8 wto/ The following methods were applied to upgrade the 'naphtha': (1) refining in a glass laboratory fractionation still; the bad odour was eliminated by removing the materi
Low-temperature air autoxidation of SRC in quinoline followed by anaerobic thermolysis yields as much as 30% of low-molecular-might (<210) compounds. Preliminary autoxidation of the quinolinesoluble portion of a bituminous coal gave a significant yield of similar low-molecular-weight compounds. Thes
SnCl,catalysed coal hydroliquefaction. The similarity in the dispersion patterns of ZnCl, and SnCl, upon impregnation from solution (Figures I and 2) suggests that the divergent tar production trends caused by these two Lewis acids' (see Tab/e I) must be explained by differing reaction mechanisms. S