期刊
CHEMISTRY OF MATERIALS
卷 24, 期 1, 页码 140-148出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm2030119
关键词
Stober silica; mesoporous silica; hollow spheres; nanocomposites; Ru nanocatalysts; arene hydrogenation
资金
- National University of Singapore, Singapore
- King Abdullah University of Science and Technology, Saudi Arabia
A synthetic approach has been devised to convert conventional Stober silica (SiO(2)) spheres into a new type of porous structural platform for supporting multicomponent catalysts. With this approach, we have first prepared zinc-doped SiO(2) (Zn-SiO(2)) hollow spheres, on which zinc oxide (ZnO) phase and ruthenium (Ru) nanoparticles have been deposited and assembled sequentially in solution phase. A series of complex Ru/ZnO/Zn-SiO(2) nanocatalysts has been thus been integrated onto the zinc-doped SiO(2) supports after additional thermal treatment and reduction. To test their workability under harsh reactive environments, we have further evaluated the above prepared catalysts using arene hydrogenation as model reactions. These integrated nanocatalysts have shown superior activity, high robustness, and easy recovery in the studied heterogeneous catalysis.
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