Solubilization of coal by reductive acetylation

Reductive acetylation of a low rank high volatile bituminous coal in acetic acid increased the solubility in pyridine from 16 to 39%. Although reduction of carbonyl groups took place, as indicated by i.r. spectra, the acetyl value did not increase markedly compared with simple acetylation. A study o...

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Bibliographic Details
Published in:Fuel (Guildford) 1989, Vol.68 (1), p.127-128
Main Authors: Nair, C.K.S., Kumari, B.K., Pardhasaradhi, M.
Format: Article
Language:English
Subjects:
acetylation
polar compounds
solubility
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Summary:Reductive acetylation of a low rank high volatile bituminous coal in acetic acid increased the solubility in pyridine from 16 to 39%. Although reduction of carbonyl groups took place, as indicated by i.r. spectra, the acetyl value did not increase markedly compared with simple acetylation. A study on model compounds indicated no scission of C-C bonds but did show the elimination of carbonyl oxygen with dimerization. The enhanced pyridine solubility of the treated coal is possibly due to a decrease in non-covalent polar interactions between the mobile and macromolecular phases of the coal structure.
ISSN:0016-2361
1873-7153
DOI:10.1016/0016-2361(89)90025-2