Simultaneous chemical modification and structural transformation of Stöber silica spheres for integration of nanocatalysts
Type
Conference PaperAuthors
Yao, KexinZeng, Huachun
KAUST Department
Advanced Membranes and Porous Materials Research CenterDate
2011-12-14Online Publication Date
2011-12-14Print Publication Date
2012-01-10Permanent link to this record
http://hdl.handle.net/10754/575788
Metadata
Show full item recordAbstract
A synthetic approach has been devised to convert conventional Stöber 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. © 2011 American Chemical Society.Sponsors
The authors acknowledge financial support from National University of Singapore, Singapore, and King Abdullah University of Science and Technology, Saudi Arabia.Publisher
American Chemical Society (ACS)Journal
Chemistry of Materialsae974a485f413a2113503eed53cd6c53
10.1021/cm2030119