Journal
CHEMSUSCHEM
Volume 8, Issue 17, Pages 2867-2871Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201500261
Keywords
biomass conversion; gold; nanoparticles; palladium; zeolites
Funding
- National Natural Science Foundation of China [21403192, U146220026]
- National High-Tech Research and Development program of China [2013AA065301]
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The conversion of bioethanol into valuable products is an important area in the conversion of biomass. We demonstrate the successful synthesis of bimetallic gold-palladium (Au-Pd) nanoparticles encapsulated within S-1 zeolite crystals (AuPd@S-1) by a solvent-free strategy. This strategy allows highly efficient use of the noble metals, with more than 96% of the gold and palladium being loaded into the final samples. Electron microscopy characterization and investigations with probe molecules confirm that the Au-Pd nanoparticles are encapsulated inside the S-1 crystals. The AuPd@S-1 catalyst is very active for the aerobic oxidation of bioethanol, giving 100% conversion and 99% selectivity to acetic acid. Even in the presence of 90% water, the catalyst still gives a conversion higher than 80% and a selectivity of 95 %. More importantly, the AuPd@S-1 catalyst exhibits excellent stability in the oxidation of bioethanol. These features are important for future practical applications of the AuPd@S-1 catalyst.
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