Abstract
A simple adsorption method was studied for the preparation of SBA-15-encapsulated palladium nanoparticles. This method employed the SBA-15 with organic template removed by ethanol extraction for the adsorption of cationic Pd precursors in alkaline solution followed by calcination and H2 reduction. The pH of the solution was found to be a critical factor in determining the palladium content and the ordered mesoporous structure. Our characterizations revealed that the Pd nanoparticles prepared by this method were located inside the mesoporous channels and were quite uniform in size (mostly 3–4 nm). The SBA-15-encapsulated uniform Pd nanoparticles were efficient catalysts for solvent-free aerobic oxidation of alcohols.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (20625310 and 20433030), the National Basic Research Program of China (2003CB615803 and 2005CB221408), the Key Scientific Project of Fujian Province of China (No. 2005HZ01-3), and the Program for New Century Excellent Talents in Fujian province (to Q.Z.).
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Li, C., Zhang, Q., Wang, Y. et al. Preparation, Characterization and Catalytic Activity of Palladium Nanoparticles Encapsulated in SBA-15. Catal Lett 120, 126–136 (2008). https://doi.org/10.1007/s10562-007-9263-x
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DOI: https://doi.org/10.1007/s10562-007-9263-x