title: Narrowly dispersed silica supported osmium nanoparticles prepared by an organometallic approach: H2 and CO adsorption stoichiometry and hydrogenolysis catalytic activity.
abstract: Osmium(cyclooctadiene)(cyclooctatetraene) is used as a molecular precursor to prepare small and narrowly distributed silica supported nanoparticles upon a mild treatment under H2 (1.1 ± 0.3 nm, ca. 90 atoms). Static volumetric chemisorption combined with HAADF-STEM shows that Os nanoparticles adsorb 1.7 ± 0.1 H and 1.4 ± 0.1 CO per surface atom. These particles present high activity in the hydrogenolysis of alkanes via a dimetallacyclopentane mechanism.
authors.affiliation: ETH Zurich, Department of Chemistry, Wolfgang-Pauli-Strasse 10, CH-8093, Zurich, Switzerland.
authors.forename: Jia En
authors.initials: JE
authors.lastname: Low
authors.forename: Annette
authors.initials: A
authors.lastname: Foelske-Schmitz
authors.forename: Frank
authors.initials: F
authors.lastname: Krumeich
authors.forename: Michael
authors.initials: M
authors.lastname: Wörle
authors.forename: David
authors.initials: D
authors.lastname: Baudouin
authors.forename: Fernando
authors.initials: F
authors.lastname: Rascón
authors.forename: Christophe
authors.initials: C
authors.lastname: Copéret