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    Selective functionalization of hollow nanospheres with acid and base groups for cascade reactions

    Access Status
    Fulltext not available
    Authors
    Gao, J.
    Zhang, X.
    Lu, Y.
    Liu, Shaomin
    Liu, Jian
    Date
    2015
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Gao, J. and Zhang, X. and Lu, Y. and Liu, S. and Liu, J. 2015. Selective functionalization of hollow nanospheres with acid and base groups for cascade reactions. Chemistry - A European Journal. 21 (20): pp. 7403-7407.
    Source Title
    Chemistry - A European Journal
    DOI
    10.1002/chem.201500532
    ISSN
    0947-6539
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/42298
    Collection
    • Curtin Research Publications
    Abstract

    The inner-surface functionalization of hollow silica spheres has rarely been reported and is still a challenging topic. Herein, we report a deacetalization–Henry cascade reaction catalyzed by dual-functionalized mesoporous silica hollow nanospheres with basic amine groups ([BOND]NH2) on the internal shell and carboxylic acid groups ([BOND]COOH) on the external shell. The selective functionalization has been realized by a combination of “step-by-step post-grafting” and “cationic surfactant-assisted selective etching” strategy. Compared to unisolated catalyst, the selectively isolated acidic and basic dual catalyst provides excellent catalytic performance for the deacetalization–Henry cascade reaction in terms of both activity (>99 %) and selectivity (95 %).

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