Journal
JOURNAL OF WOOD SCIENCE
Volume 47, Issue 6, Pages 458-464Publisher
SPRINGER-VERLAG TOKYO
DOI: 10.1007/BF00767898
Keywords
liquefaction; ethylene glycol; wood; cellulose; NMR
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The composition of liquefied cellulose in the presence of ethylene glycol (EG) was studied. The liquefied products were fractionated and analyzed with high-performance liquid chromatography and nuclear magnetic resonance. EG-glucosides were detected as the only saccharides and 2-hydroxyethyl levulinate as the highly decomposed compound derived from cellulose, Quantitative analysis of the EG-glucosides and levulinic acid that comes from the levulinate shows the presence of the following mechanism in the EG-liquefaction of cellulose. First, cellulose is degraded and produces considerable amounts of EG-glucosides during the early stage of liquefaction. Then, when liquefaction is prolonged, the glucosides are decomposed, leading to a large quantity of levulinates.
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