Catalysis Letters

, Volume 99, Issue 3–4, pp 181–185 | Cite as

Synergetic effect of platinum or palladium on gold catalyst in the selective oxidation of D-sorbitol

  • Nikolaos Dimitratos
  • Francesca Porta
  • Laura Prati
  • Alberto Villa
Article

Abstract

Monometallic Au, Pt and Pd on carbon catalysts show poor activity in the liquid phase oxidation of D-sorbitol to gluconic/gulonic acids. However, by using bimetallic based catalysts (Au–Pt or Au–Pd) a great enhancement in the activity has been observed with respect to all the monometallic catalysts tested probably due to a synergetic effect between Au and Pt or Pd. In fact physical mixture of monometallic catalysts presented poor activity. Bimetallic showed a resistance to poisoning by dioxygen and by reaction products as high as gold monometallic catalyst, but also an improved selectivity toward monooxidation with respect to monometallic.

oxidation of polyols sorbitol oxidation bimetallic catalyst gold/palladium gold/platinum 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Prati, L., Rossi, M. 1998J.Catal.176552CrossRefGoogle Scholar
  2. S. Carrettin, P. McMorn, P. Johnston, K. Griffin and G.J. Huthchings, Chem. Commun., 2002, 696.Google Scholar
  3. Carrettin, S., McMorn, P., Johnston, P., Griffin, K., Huthchings, G.J., Kielly, C.J. 2003Phys.Chem.Chem.Phys.51329CrossRefGoogle Scholar
  4. Prati, L., Porta, F. 2004J.Catal.224397CrossRefGoogle Scholar
  5. Biella, S., Prati, L., Rossi, M. 2002J.Catal.206242CrossRefGoogle Scholar
  6. Besson, M., Lahmer, F., Gallezot, P., Fuertes, P., Flèche , G. 1995J.Catal152116CrossRefGoogle Scholar
  7. Enea, O., Ango, J.P. 1989Elect.Acta34391CrossRefGoogle Scholar
  8. T.Mallat and A.Baiker, Catal.Today 19 (1994) 247 and reference cited therein.Google Scholar
  9. Besson, M., Gallezot, P. 2003Catal.Today81547CrossRefGoogle Scholar
  10. Porta, F., Prati, L., Rossi, M., Scarì , G. 2002J.Catal.211464CrossRefGoogle Scholar
  11. Biella, S., Prati, L., Rossi, M. 2003J.Mol.Cat. A: General197207Google Scholar
  12. Prati, L., Rossi, M. 1997Stud.Surf.Sci.Catal.110509CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • Nikolaos Dimitratos
    • 1
  • Francesca Porta
    • 1
  • Laura Prati
    • 1
  • Alberto Villa
    • 1
  1. 1.Dipartimento di Chimica Inorganica Metallorganica e Analitica e INSTM UnitCentre of Excellence CIMAINA, Auricat Programme Università di MilanoMilanoItaly

Personalised recommendations