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Small Pd Nanoparticles Supported in Large Pores of Mesocellular Foam: An Excellent Catalyst for Racemization of Amines
Stockholm University, Faculty of Science, Department of Organic Chemistry.
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK).
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2011 (English)In: Chemistry - A European Journal, ISSN 0947-6539, E-ISSN 1521-3765, Vol. 17, no 47, 13269-13273 p.Article in journal (Refereed) Published
Abstract [en]

Highly dispersed palladium nanoparticles (1–2 nm) supported in large-pore mesocellular foam (MCF; 29 nm) were synthesized. The Pd-nanocatalyst/MCF system was characterized by transmission electron microscopy (TEM), powder X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The performance of the Pd nanocatalyst obtained was examined for amine racemization. The Pd nanocatalyst showed higher activity and selectivity toward racemization of (S)-1-phenylethyl amine than any other amine racemization catalyst reported so far and it could be reused several times. Our data from TEM and XRD suggest a restructuring of the Pd nanocatalyst from amorphous to crystalline and an increase in Pd nanocatalyst size during the racemization reaction. This led to an unexpected increase of activity after the first use. The Pd nanocatalyst obtained can be integrated with other resolving processes of racemic organic compounds to increase the yield of chiral organic products.

Place, publisher, year, edition, pages
2011. Vol. 17, no 47, 13269-13273 p.
Keyword [en]
amines, heterogeneous catalysis, mesocellular foams, nanoparticles, palladium
National Category
Organic Chemistry
URN: urn:nbn:se:su:diva-68172DOI: 10.1002/chem.201101265ISI: 000298058500023OAI: diva2:472040
Available from: 2012-01-03 Created: 2012-01-03 Last updated: 2012-02-29Bibliographically approved

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Tai, Cheuk-WaiBäckvall, Jan-E.
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Department of Organic ChemistryDepartment of Materials and Environmental Chemistry (MMK)
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