Heterogeneity in cellulose pyrolysis indicated from the pyrolysis in sulfolane

✍ Scribed by H. Kawamoto; S. Saka

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 275 KB
• Volume: 76
• Category: Article
• ISSN: 0165-2370
• DOI: 10.1016/j.jaap.2005.12.011

✦ Synopsis

In sulfolane (tetramethylene sulfone), which is a good solvent for the primary product, levoglucosan, cellulose is pyrolyzed completely into soluble products without forming any char. Residues during pyrolysis in sulfolane at 200, 240 and 330 8C were obtained always as colorless noncarbonized substances. From the change in the crystallinity and crystallite size as compared with the ordinary pyrolysis, a heterogeneous mechanism is indicated for cellulose pyrolysis, starting from a molecule which is less stabilized due to lack of some intermolecular interactions.