Journal
CHEMCATCHEM
Volume 2, Issue 9, Pages 1107-1114Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201000093
Keywords
alcohols; biomass; heterogeneous catalysis; nanoparticles; X-ray absorption spectroscopy
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Funding
- National Science Foundation [OISE-0730277, EEC-0813570]
- NASA
- U.S. Department of Energy [DE-FG02-05ER15688, DE-AC02-98CH10886]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [GRANTS:13798258] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0832760] Funding Source: National Science Foundation
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Bimetallic Pt-Re nanoparticles supported on Norit carbon were effective at converting aqueous glycerol to 1,3 (34%) and 1,2 (33%) propanediol at 443 K under 4 MPa of H-2. Results from Xray absorption spectroscopy and analytical transmission electron microscopy confirmed that the nanoparticles were indeed bimetallic, with a particle size less than 2 nm in diameter. The Pt L-III near edge spectra indicated that the Pt was reduced to the metallic state by treatment in H-2 at 473 K, but that a partial positive charge remained on the Re. These oxidized Re species could be associated with charged Re atoms dispersed on the carbon support because spillover of H atoms from Pt was required to reduce Re in the bimetallic particles.
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