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X-ray Absorption Spectroscopy of Bimetallic Pt–Re Catalysts for Hydrogenolysis of Glycerol to Propanediols

  1. Oliver M. Daniel1,
  2. Dr. Andrew DeLaRiva2,
  3. Dr. Edward L. Kunkes3,
  4. Prof. Abhaya K. Datye2,
  5. Prof. James A. Dumesic3,
  6. Prof. Robert J. Davis1

Article first published online: 7 JUL 2010

DOI: 10.1002/cctc.201000093

Issue

ChemCatChem

ChemCatChem

Volume 2, Issue 9, pages 1107–1114, September 17, 2010

Additional Information

How to Cite

Daniel, O. M., DeLaRiva, A., Kunkes, E. L., Datye, A. K., Dumesic, J. A. and Davis, R. J. (2010), X-ray Absorption Spectroscopy of Bimetallic Pt–Re Catalysts for Hydrogenolysis of Glycerol to Propanediols. ChemCatChem, 2: 1107–1114. doi: 10.1002/cctc.201000093

Author Information

  1. 1

    Department of Chemical Engineering, University of Virginia, 102 Engineers' Way, Charlottesville, VA 22904-4741 (USA), Fax: (+1) 434-982-2658

  2. 2

    Department of Chemical and Nuclear Engineering, University of New Mexico, 1 University of New Mexico, MSC01 1120, Albuquerque, NM 87131 (USA)

  3. 3

    Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 2014 Engineering Hall, 1415 Engineering Drive, Madison, WI 53706-1607 (USA)

Publication History

  1. Issue published online: 14 SEP 2010
  2. Article first published online: 7 JUL 2010
  3. Manuscript Received: 29 MAR 2010

Funded by

  • National Science Foundation. Grant Numbers: OISE-0730277, EEC-0813570
  • NSF
  • NASA
  • U.S. Department of Energy. Grant Number: DE-FG02-05ER15688
  • Division of Materials Sciences and Division of Chemical Sciences. Grant Number: DE-AC02-98CH10886

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Keywords:

  • alcohols;
  • biomass;
  • heterogeneous catalysis;
  • nanoparticles;
  • X-ray absorption spectroscopy

Abstract

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 H2. Results from X-ray 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 LIII near edge spectra indicated that the Pt was reduced to the metallic state by treatment in H2 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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