An optimized route for the preparation of well dispersed supported ruthenium catalysts

被引：17

作者：

Bedrane, S ^{[1
]}

Descorme, C ^{[1
]}

Duprez, D ^{[1
]}

机构：

[1] Univ Poitiers, LACCO, CNRS, UMR 6503, F-86022 Poitiers, France

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2002年 / 12卷 / 05期

关键词：

D O I：

10.1039/b110921a

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：

The preparation of ceria and ceria-zirconia supported ruthenium catalysts was optimized in order to get well-dispersed metal particles. The influence of the preparation method and the treatment conditions on the final morphology of the catalyst was investigated. Ceria-supported catalysts, prepared by incipient wetness impregnation under ultrasound and further treated under pure hydrogen, were shown to have an optimal metal dispersion. In fact, H-2 chemisorption results and TEM observations demonstrated a large increase in the metal accessibility when impregnation was carried out with ultrasound assistance. Ceria-supported ruthenium catalysts with dispersion as high as 60% were prepared.

引用

页码：1563 / 1567

页数：5

共 35 条

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