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    Cobalt exchanged zeolites for heterogeneous catalytic oxidation of phenol in the presence of peroxymonosulphate

    Access Status
    Fulltext not available
    Authors
    Shukla, Pradeep
    Wang, Shaobin
    Singh, Kailash
    Ang, Ming
    Tade, Moses
    Date
    2010
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Shukla, P. and Wang, S. and Singh, K. and Ang, M. and Tade, M. 2010. Cobalt exchanged zeolites for heterogeneous catalytic oxidation of phenol in the presence of peroxymonosulphate. Applied Catalysis B: Environmental. 99 (1-2): pp. 163-169.
    Source Title
    Applied Catalysis B: Environmental
    DOI
    10.1016/j.apcatb.2010.06.013
    ISSN
    09263373
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/43957
    Collection
    • Curtin Research Publications
    Abstract

    Several cobalt ion-exchanged zeolite catalysts based on ZSM-5, zeolite-A, and zeolite-X were prepared and tested for heterogeneous oxidation of phenol in the presence of various oxidants such as H2O2, persulphate, and peroxymonosulphate. It is found that Co-ZSM-5 is highly effective in heterogeneous activation of peroxymonosulphate to produce sulphate radicals but exhibits low activity for the activation of H2O2 and persulphate for organic oxidation in water. Co-zeolite-A and Co-zeolite-X show much faster reaction rate in homogeneous activation of peroxymonosulphate due to decomposition of the catalysts and leaching of Co ions into aqueous solution. Co-ZSM-5 also presents stable performance in heterogeneous activation of peroxymonosulphate for phenol degradation. The phenol degradation depends on catalyst loading, phenol concentration, oxidant concentration and temperature. Kinetic studies indicate that phenol degradation follows zero-order kinetics with an activated energy of 69.7 kJ/mol.

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