Structure and catalytic activity of POSS-stabilized Pd nanoparticles

Palladium nanoparticles stabilized with polyhedral oligomeric silsesquioxanes have been characterized and determined to function as a heterogeneous catalyst. TEM and SEM studies indicate the material comprises 2–5 nm diameter Pd crystallites in a POSS layer, which aggregate to form spherical seconda...

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Bibliographic Details
Published in:Catalysis communications 2007-12, Vol.8 (12), p.2137-2142
Main Authors: Létant, Sonia E., Herberg, Julie, Dinh, Long N., Maxwell, Robert S., Simpson, Randall L., Saab, Andrew P.
Format: Article
Language:English
Subjects:
Catalysis
Nanoparticles
Palladium
POSS
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Summary:Palladium nanoparticles stabilized with polyhedral oligomeric silsesquioxanes have been characterized and determined to function as a heterogeneous catalyst. TEM and SEM studies indicate the material comprises 2–5 nm diameter Pd crystallites in a POSS layer, which aggregate to form spherical secondary structures of about 50 nm in diameter. Solid-state NMR reveals that the primary interaction between Pd and POSS is through the alkyl-amino functional groups on the POSS cage, in addition to some weak interactions with the cage itself. This material is observed by microbalance measurements to efficiently catalyze the direct hydrogenation of 1,4-diphenylbutadiyne.
ISSN:1566-7367
1873-3905
DOI:10.1016/j.catcom.2007.04.034