products of the zinc chloride-promoted decomposition of cellulose in aqueous phenol at 350 degrees C

When cellulose was degraded at 350 degrees C for 1 h in aqueous phenol with zinc chloride as catalyst, 10% of the carbon atoms were found in monosaccharide products, 4% in neutral aromatic derivatives (80% xanthene), 34% in the methyl groups of methylated phenols, 14% in the non-aromatic moieties of...

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Bibliographic Details
Published in:Carbohydrate research 1992-12, Vol.237, p.79-86
Main Authors: Ferrier, R.J, Severn, W.B, Furneaux, R.H, Miller, I.J
Format: Article
Language:English
Subjects:
cellulose
chemical reactions
chlorides
degradation
liquidification
solvents
temperature
xanthene
zinc
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Summary:When cellulose was degraded at 350 degrees C for 1 h in aqueous phenol with zinc chloride as catalyst, 10% of the carbon atoms were found in monosaccharide products, 4% in neutral aromatic derivatives (80% xanthene), 34% in the methyl groups of methylated phenols, 14% in the non-aromatic moieties of bis(hydroxyphenyl)methanes and C-methylated derivatives thereof, and 22% in the char. Carbon-containing gasses were also produced, and some of the cellulose carbon atoms appeared in the aromatic rings of the neutral and phenolic products. These observations suggest that formaldehyde was a key intermediate. In pure phenol as the solvent, 10% of the carbon of cellulose was converted into the methylene carbon of xanthene.
ISSN:0008-6215
1873-426X
DOI:10.1016/S0008-6215(92)84234-J