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    Probing hydrogen spillover in Pd@MIL-101(Cr) with a focus on hydrogen chemisorption

    Access Status
    Fulltext not available
    Authors
    Szilagyi, Petra
    Callini, E.
    Anastasopol, A.
    Kwakernaak, C.
    Sachdeva, S.
    van de Krol, R.
    Geerlings, H.
    Borgschulte, A.
    Zuttel, A.
    Dam, B.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Szilagyi, P. and Callini, E. and Anastasopol, A. and Kwakernaak, C. and Sachdeva, S. and van de Krol, R. and Geerlings, H. et al. 2014. Probing hydrogen spillover in Pd@MIL-101(Cr) with a focus on hydrogen chemisorption. Physical Chemistry Chemical Physics. 16: pp. 5803-5809.
    Source Title
    Physical Chemistry Chemical Physics
    Additional URLs
    http://pubs.rsc.org/en/content/articlepdf/2014/cp/c3cp54898h
    ISSN
    1463-9076
    School
    Department of Physics and Astronomy
    URI
    http://hdl.handle.net/20.500.11937/49465
    Collection
    • Curtin Research Publications
    Abstract

    Palladium nanoparticles can split the dihydrogen bond and produce atomic hydrogen. When the metal nanoparticles are in intimate contact with a hydrogen-atom host, chemisorption of H-atoms by the host has been suggested to occur via the hydrogen spillover mechanism. Metal–organic frameworks were predicted to be able to act as effective chemisorption sites, and increased ambient-temperature hydrogen adsorption was reported on several occasions. The intimate contact was supposedly ensured by the use of a carbon bridge. In this work, we show that it is possible to introduce catalyst palladium particles into MOF’s pores and simultaneously ensuring good contact, making the employment of the carbon bridge redundant. The addition of Pd nanoparticles indeed increases the ambient-temperaturehydrogen uptake of the framework, but this is found to be solely due to palladium hydride formation. In addition, we show that the hydrogen atoms do not chemisorb on the host framework, which excludes the possibility of hydrogen spillover.

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