Polyoxomolybdate‐Stabilized Ru0 Nanoparticles Deposited on Mesoporous Silica as Catalysts for Aromatic Hydrogenation |
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| Authors: | Souhir Boujday Dr. Juliette Blanchard Dr. Richard Villanneau Dr. Jean‐Marc Krafft Christophe Geantet Prof. Catherine Louis Dr. Michèle Breysse Dr. Anna Proust Prof. |
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| Affiliation: | 1. Laboratoire de Chimie Inorganique et Matériaux Moléculaires, UMR 7071, Université Pierre et MarieCurie‐Paris 6, 2 Place Jussieu;2. 75252 Paris Cedex 05, France, Fax: (+33) 1?44?27?38 41;3. Laboratoire de Réactivité de Surface UMR 7609, Université Pierre et Marie Curie‐Paris 6, 4 Place Jussieu, 75252 Paris Cedex 05, France;4. IRCELYON, UMR‐CNRS 5256, Université Claude Bernard Lyon 1, 2 av A. Einstein, F‐69626 Villeurbanne Cedex, France |
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| Abstract: | We use polyoxometalates as precursors for the preparation of heterogeneous catalysts. In the starting molecular precursor [{Ru(C6Me6)}2Mo5O18{Ru(C6Me6)(H2O)}], three ruthenium arene fragments are supported on a formally lacunary Lindqvist‐type polyoxomolybdate. This species was introduced by incipient wetness impregnation into the porosity of a SBA‐15‐type mesoporous silica. The evolution of the system under reducing atmosphere is followed by several methods, such as temperature‐programmed reduction (TPR), Raman, and X‐ray absorption spectroscopy (XAS). The results indicate that the polyoxometalate structure is retained after grafting on silica and allows the stabilization of Ru0 nanoparticles after reduction. The resulting system exhibits interesting catalytic activity in benzene hydrogenation. |
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| Keywords: | heterogeneous catalysis molybdenum nanostructures polyoxometalates ruthenium |
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