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    Low temperature CO oxidation over Ag/SBA-15 nanocomposites prepared via in-situ "pH-adjusting" method

    Access Status
    Fulltext not available
    Authors
    Zhang, X.
    Qu, Z.
    Li, Xin Yong
    Zhao, Q.
    Wang, Y.
    Quan, X.
    Date
    2011
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhang, X. and Qu, Z. and Li, X.Y. and Zhao, Q. and Wang, Y. and Quan, X. 2011. Low temperature CO oxidation over Ag/SBA-15 nanocomposites prepared via in-situ "pH-adjusting" method. Catalysis Communications. 16 (1): pp. 11-14.
    Source Title
    Catalysis Communications
    DOI
    10.1016/j.catcom.2011.08.030
    ISSN
    1566-7367
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/21778
    Collection
    • Curtin Research Publications
    Abstract

    The catalytic activity for CO oxidation over Ag/SBA-15 catalysts prepared by in-situ "pH-adjusting" method is studied in this paper. The prepared silver catalyst (7.8 wt%) under pH = 5 condition gives 98% of CO oxidation at 70 °C, as compared to 140°C with conventional silver catalyst without pH adjusting (6.1 wt%). However, more Ag2O clusters are formed inside the channels with the further pH increasing, resulting in the low catalytic activity for CO oxidation. Therefore the pH value shows significant effect on the silver content and the species state, consequently affecting the catalytic activity of Ag/SBA-15 catalysts for CO oxidation. © 2011 Elsevier B.V. All rights reserved.

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