Ru nanoparticles stabilized by organosilane fragments: Influence of the initial Si/Ru ratio and thermal stability

被引：8

作者：

Pelzer, K.

Candy, J. P.

Bergeret, G.

Basset, J. M.

机构：

[1] Max Planck Soc, Fritz Haber Inst, Dept Inorgan Chem, D-14195 Berlin, Germany

[2] CNRS, LCOMS, UMR 9986, CPE, F-69616 Villeurbanne, France

[3] Inst Rech Catalyse, F-69626 Villeurbanne, France

来源：

EUROPEAN PHYSICAL JOURNAL D | 2007年 / 43卷 / 1-3期

关键词：

D O I：

10.1140/epjd/e2007-00111-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The decomposition of the organometallic ruthenium precursor [Ru(COD)(COT)] (COD: 1,5-cyclooctadiene; COT: 1,3,5-cyclooctatriene) in mild conditions (20 degrees C, 3 bar H(2)) in n-pentane leads, in the presence of octylsilane (H(3)SiC(8)H(17)) to the formation of stable Ru nanoparticles with narrow size distribution. The solids obtained after washing and drying were fully characterized by elemental analysis, TEM with EDX, infra red measurements as well as solid state (13)C CP-MAS NMR investigations. The influence of the initial octylsilane/Ru(COD)(COT) ratio ranging from 0.2 to 2.0 was studied. It was observed that the size of the nanoparticles decreases with the initial Si/Ru ratio. The thermal stability of these nanoparticles (Si/Ru = 1) was also studied and as expected the size of the particles drastically increases after treatment under H(2) at 500 degrees C, while surprisingly under neutral atmosphere, there is only a slight increase.

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页码：197 / 200

页数：4

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