Polyoxomolybdate-stabilized Ru0 nanoparticles deposited on mesoporous silica as catalysts for aromatic hydrogenation

被引：33

作者：

Boujday, Souhir ^{[1
,2
]}

Blanchard, Juliette ^{[2
]}

Villanneau, Richard ^{[1
]}

Krafft, Jean-Marc ^{[2
]}

Geantet, Christophe ^{[3
]}

Louis, Catherine ^{[2
]}

Breysse, Michele ^{[2
]}

Proust, Anna ^{[1
]}

机构：

[1] Univ Paris 06, Lab Chim Inorgan & Materiaux Mol, UMR 7071, F-75252 Paris, France

[2] Univ Paris 06, Lab Reactivite Surface, UMR 7609, F-75252 Paris, France

[3] Univ Lyon 1, CNRS, IRCELYON, UMR 5256, F-69626 Villeurbanne, France

来源：

CHEMPHYSCHEM | 2007年 / 8卷 / 18期

关键词：

heterogeneous catalysis; molybdenum; nanostructures; polyoxometalates; ruthenium;

D O I：

10.1002/cphc.200700533

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We use polyoxometolotes as precursors for the preparation of heterogeneous catalysts. In the starting molecular precursor [{Ru(C6Me6)}(2)Mo5O18{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), Roman, and X-ray absorption spectroscopy (XAS). The results indicate that the polyoxometalate structure is retained after grafting on silica and allows the stabilization of Ru-0 nanoparticles after reduction. The resulting system exhibits interesting catalytic activity in benzene hydrogenation.

引用

页码：2636 / 2642

页数：7

共 56 条

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