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    Acid-treatment of bio-oil in methanol: The distinct catalytic behaviours of a mineral acid catalyst and a solid acid catalyst

    Access Status
    Fulltext not available
    Authors
    Wu, L.
    Hu, X.
    Wang, Shuai
    Mahmudul Hasan, M.
    Jiang, S.
    Li, T.
    Li, C.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Wu, L. and Hu, X. and Wang, S. and Mahmudul Hasan, M. and Jiang, S. and Li, T. and Li, C. 2018. Acid-treatment of bio-oil in methanol: The distinct catalytic behaviours of a mineral acid catalyst and a solid acid catalyst. Fuel. 212: pp. 412-421.
    Source Title
    Fuel
    DOI
    10.1016/j.fuel.2017.10.049
    ISSN
    0016-2361
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/58547
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 Elsevier Ltd The different catalytic behaviour of solid acid catalyst and mineral acid catalyst towards the acid-treatment of bio-oil was investigated. The hydrogen ions in the mineral acid catalyst such as sulfuric acid homogeneously dispersed in the reaction medium made the conversion of main components of bio-oil including carboxylic acids, sugars and phenolics more efficient. In comparison, there was a steric hindrance for these components of bio-oil to access the hydrogen located in the local surface of the solid acid catalyst such as Amberlyst 70. This negatively affected their conversions during the acid-treatment. However, the inhomogeneous distribution of hydrogen ions from Amberlyst 70 in the reaction medium created high concentration of hydrogen ions in the local vicinity of the solid catalyst surface of the catalyst, which is found to be crucial for the occurrence of the etherification reactions. Understanding how the dispersion of hydrogen ions of catalyst affect the esterification of bio-oil can provide useful information for the development of the effective catalysts for upgrading of bio-oil.

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