Noble Metal in Action: Jacobs Scientists Create Palladium-Oxide with Extra High Catalytic Potential


February 14, 2011

Ulrich Kortz, Professor of Chemistry at Jacobs University, and his team report the synthesis of a novel, discrete noble metal-oxide, containing a record number of 22 palladium atoms, as well as two central copper ions. In addition to its high catalytic potential, this {Cu2Pd22} cluster compound also exhibits very unusual intramolecular magnetic interactions. The study, which has now been published as a “Very Important Paper” in the Angewandte Chemie International Edition (DOI: 10.1002/anie.201006734 ), opens new perspectives for a better understanding of noble-metal particulate based oxidation catalysis as well as intramolecular magnetic phenomena of importance in materials and life sciences.

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Nützliche Symmetriewunder: Jacobs University veranstaltet Symposion zu Synthese und Anwendungen von Polyoxometallaten

July 27, 2009

Vom 28. Juli bis 1. August 2009 veranstaltet die Jacobs University ein internationales State-of-the-art-Symposion zu Synthese und Anwendungen von Polyoxometallaten (POM), einer Klasse anorganischer Metall-Sauerstoff-Molekülen mit großer Strukturvielfalt und chemischen Eigenschaften, die für unterschiedlichste Anwendungen interessant sind, darunter Katalyse, Medizin und Materialwissenschaften. Zentrale Themen der Tagung sind Edelmetall-POM, die in Fahrzeugkatalysatoren zur Anwendung kommen, funktionale Hybridmaterialien sowie Theoriebildung. Erwartet werden rund 150 Teilnehmer aus über 20 Ländern. Die Tagung wird von Ulrich Kortz, Professor of Chemistry an der Jacobs University, organisiert.

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Jacobs Scientists create new giant molecule

lrich Kortz, Professor of Chemistry at Jacobs University, and his team successfully synthesized a polyoxometalate with 100 Tungsten and 20 Cerium atoms that has a molar mass of about 30 kilo Dalton. With a maximum diameter of 4.2 nm the inorganic molecule is comparable in size to large complex bio-molecules or even small viruses. The reaction conditions and the molecular structure are now published as cover story of the current issue of Angewandte Chemie (doi: 10.1002/anie.200701422).

[ Aug 08, 2007]  Polyoxometalates are anionic metal-oxygen clusters of large structural diversity with chemical properties, which make them especially interesting for applications in catalysis, but also in materials science and nanotechnology. Ulrich Kortz and his co-workers now achieved the synthethis of the tungstogermanate [Ce20Ge10W100O376(OH)4(H2O)30]56-, which belongs to the polyoxometalates, by condensation of the precursors [α-GeW9O34]10-and Cerium(III) ions in aqueous solution. With about 600 atoms in total, amongst them 100 atoms of the heavy metal Tungsten, the new compound is the third largest molecular polytungstate ever synthesized. In addition it contains the largest number of atoms of the Rare Earth Cerium ever incorporated in such a compound.

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