Kinetics of Hydrothermal Furfural Production from Organosolv Hemicellulose and d-Xylose

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Abstract
Organosolv pulping processes are able to generate liquid hemicellulose fractions with a low cellulose and lignin content. Utilization of such streams is promising for production of high-value chemicals. In this study, on the basis of three reaction models, kinetics of an aqueous organosolv hemicellulose and D-xylose conversion into furfural was examined at temperatures between 160 and 200 °C using a continuous tube reactor. Furthermore, furfural degradation was investigated to consider the self polymerization. Results were compared with previous studies and differences are discussed. Kinetic models showed slight differences for D-xylose conversion and stronger deviations for furfural formation. Overall, model 3, which includes the formation of a xylose intermediate, showed the best performance concerning the experimental results. Differences between D-xylose and organosolv hemicellulose conversion can be attributed mainly to sugar oligomers.
Funding Information
  • Bundesministerium für Forschung, Technologie und Raumfahrt (FKZ 031B0083B)

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