Carbon support effects on the selectivity of Pd/C catalysts for the hydrogenation of multifunctional chemicals

Radhika Rao , Raoul Blume, Thomas Willum Hansen, Erika Fuentes, Yves Chabal, Robert Schloegl, David Hibbitts, Jean Philippe Tessonnier

    Research output: Contribution to journalConference abstract in journalResearchpeer-review

    Abstract

    Metal-support interactions (MSI) and their impact on catalytic performance are well documented for oxide supports. In contrast, similar effects have been rarely studied for carbon-supported catalysts. Specifically, structure-activity correlations have remained elusive for carbons due to their heterogeneous structure at the nanoscale.

    Herein, we decreased the level of complexity of disordered nanocarbon supports with the objective of decoupling the effects of surface chemistry and graphitic character. Relationships between these isolated support features and the electronic properties of Pd metal nanoparticles (3-5 nm) were established for the liquid-phase hydrogenation of ,-unsaturated aldehydes. Trends in catalytic performance were corroborated with the evidence for MSI provided by hydrogen adsorption isotherms, aberration corrected transmission electron microscopy, synchrotron radiation based X-ray photoelectron spectroscopy, and density functional theory calculations. The observed correlations between the supports defect structure and the electronic properties of Pd are expected to set the foundation for the rational design of carbon supported catalysts. These results are envisioned to impact a vast array of reactions catalyzed by Pd/C, including hydrogenations, coupling, dehydrogenations, and oxidations.
    Original languageEnglish
    JournalAmerican Chemical Society. Abstracts of Papers (at the National Meeting)
    Volume253
    Number of pages1
    ISSN0065-7727
    Publication statusPublished - 2018
    Event253rd ACS National Meeting - San Francisco, California, United States
    Duration: 2 Apr 20176 Apr 2017
    Conference number: 253

    Conference

    Conference253rd ACS National Meeting
    Number253
    CountryUnited States
    CitySan Francisco, California
    Period02/04/201706/04/2017

    Bibliographical note

    Program Area: Division of Catalysis Science and Technology, CATL 111

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