Catalytic pyrolysis of woody biomass in a fluidized bed reactor: Influence of the zeolite structure

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    Abstract

    Catalytic pyrolysis of biomass from pine wood was carried out in a fluidized bed reactor at 450 degrees C. Different structures of acidic zeolite catalysts were used as bed material in the reactor. Proton forms of Beta, Y, ZSM-5, and Mordenite were tested as catalysts in the pyrolysis of pine, while quartz sand was used as a reference material in the non-catalytic pyrolysis experiments. The yield of the pyrolysis product phases was only slightly influenced by the structures, at the same time the chemical composition of the bio-oil was dependent on the structure of acidic zeolite catalysts. Ketones and phenols were the dominating groups of compounds in the bio-oil. The formation of ketones was higher over ZSM-5 and the amount of acids and alcohols lower than over the other bed materials tested. Mordenite and quartz sand produced smaller quantities of polyaromatic hydrocarbons than the other materials tested. It was possible to successfully regenerate the spent zeolites without changing the structure of the zeolite.
    Original languageUndefined/Unknown
    Pages (from-to)2493–2501
    Number of pages9
    JournalFuel
    Volume87
    Issue number12
    DOIs
    Publication statusPublished - 2008
    MoE publication typeA1 Journal article-refereed

    Keywords

    • biomass
    • catalytic pyrolysis
    • fluidized bed reactor
    • zeolites

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