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    Simultaneous chemical modification and structural transformation of Stöber silica spheres for integration of nanocatalysts

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    Type
    Conference Paper
    Authors
    Yao, Kexin
    Zeng, Huachun
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Date
    2011-12-14
    Online Publication Date
    2011-12-14
    Print Publication Date
    2012-01-10
    Permanent link to this record
    http://hdl.handle.net/10754/575788
    
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    Abstract
    A synthetic approach has been devised to convert conventional Stöber silica (SiO 2) spheres into a new type of porous structural platform for supporting multicomponent catalysts. With this approach, we have first prepared zinc-doped SiO 2 (Zn-SiO 2) hollow spheres, on which zinc oxide (ZnO) phase and ruthenium (Ru) nanoparticles have been deposited and assembled sequentially in solution phase. A series of complex Ru/ZnO/Zn-SiO 2 nanocatalysts has been thus been integrated onto the zinc-doped SiO 2 supports after additional thermal treatment and reduction. To test their workability under harsh reactive environments, we have further evaluated the above prepared catalysts using arene hydrogenation as model reactions. These integrated nanocatalysts have shown superior activity, high robustness, and easy recovery in the studied heterogeneous catalysis. © 2011 American Chemical Society.
    Sponsors
    The authors acknowledge financial support from National University of Singapore, Singapore, and King Abdullah University of Science and Technology, Saudi Arabia.
    Publisher
    American Chemical Society (ACS)
    Journal
    Chemistry of Materials
    DOI
    10.1021/cm2030119
    ae974a485f413a2113503eed53cd6c53
    10.1021/cm2030119
    Scopus Count
    Collections
    Advanced Membranes and Porous Materials Research Center; Publications Acknowledging KAUST Support

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