Support-enhanced selective aerobic alcohol oxidation over Pd/mesoporous silicas

Christopher M A Parlett, Duncan W. Bruce, Nicole S. Hondow, Adam F. Lee, Karen Wilson

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The influence of silica mesostructure upon the Pd-catalyzed selective oxidation of allylic alcohols has been investigated for amorphous and surfactant-templated SBA-15, SBA-16, and KIT-6 silicas. Significant rate enhancements can be achieved via mesopore introduction, most notably through the use of interconnected porous silica frameworks, reflecting both improved mass transport and increased palladium dispersion; catalytic activity decreases in the order Pd/KIT-6 ≈ Pd/SBA-16 > Pd/SBA-15 > Pd/SiO2. Evidence is presented that highly dispersed palladium oxide nanoparticles, not zerovalent palladium, are the catalytically active species.

    Original languageEnglish
    Pages (from-to)636-640
    Number of pages5
    JournalACS Catalysis
    Volume1
    Issue number6
    DOIs
    Publication statusPublished - 3 Jun 2011

    Keywords

    • active site
    • alcohol
    • mesoporous
    • Palladium
    • selective oxidation
    • silica

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