Pyrolysis of softwood carbohydrates in a fluidized bed reactor

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    In the present work pyrolysis of pure pine wood and softwood carbohydrates, namely cellulose and galactoglucomannan (the major hemicellulose in coniferous wood), was conducted in a batch mode operated fluidized bed reactor. Temperature ramping (5 degrees C/min) was applied to the heating until a reactor temperature of 460 degrees C was reached. Thereafter the temperature was kept until the release of non-condensable gases stopped. The different raw materials gave significantly different bio-oils. Levoglucosan was the dominant product in the cellulose pyrolysis oil. Acetic acid was found in the highest concentrations in both the galactoglucomannan and in the pine wood pyrolysis oils. Acetic acid is most likely formed by removal of O-acetyl groups from mannose units present in GGM structure.
    Original languageUndefined/Unknown
    Pages (from-to)1665–1675
    Number of pages11
    JournalInternational Journal of Molecular Sciences
    Issue number9
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed


    • bio-oil
    • Cellulose
    • fluidized bed reactor
    • galactoglucomannan
    • pine
    • pyrolysis

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