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    Deoxygenation effect on hydrophilicity changes of Shengli lignite during pressurized pyrolysis at low temperature

    Access Status
    Fulltext not available
    Authors
    Huang, X.
    Zhang, Shu
    Lin, X.
    Wang, Y.
    Xu, M.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Huang, X. and Zhang, S. and Lin, X. and Wang, Y. and Xu, M. 2013. Deoxygenation effect on hydrophilicity changes of Shengli lignite during pressurized pyrolysis at low temperature. Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology. 41 (12): pp. 1409-1414.
    Source Title
    Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology
    ISSN
    0253-2409
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/56047
    Collection
    • Curtin Research Publications
    Abstract

    The effect of temperature (200~350 °C) and pressure (0.25~8.00 MPa) on the elimination of main oxygen-containing functional groups of Shengli lignite was examined during pyrolysis in a fixed-bed reactor. Effects of the reduction of oxygen-containing functional groups on the moisture holding capacity (MHC) of coal samples were also investigated. The results showed that temperature was the key factor on the removal of carboxyl and phenolic hydroxyl from the lignite. The variation of pressure had few effects on the removal of carboxyl in coal; in contrast, phenolic hydroxyl was reduced to a minimum point at the pressure between 3.00 to 4.00 MPa. The carboxyl content in the lignite played a dominant role on the surface polarity and moisture holding capacity. The influence of specific surface area on the MHC became distinct when the carboxyl content in coal samples kept constant.

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