Skip to main content
SpringerLink
Log in

Efficient Reduction of NO x by H2 Under Oxygen-Rich Conditions over Pd/TiO2 Catalysts: An in situ DRIFTS Study

  • Published:
Catalysis Letters Aims and scope Submit manuscript

Abstract

The H2/NO/O2 reaction under lean-burn conditions has been studied by means of in situ DRIFTS, reactor measurements and temperature-programmed desorption with the aim of understanding the very different behavior of Pd/TiO2 and Pd/Al2O3 catalysts. The former deliver very high NO x conversions (70-80%) with good N2 selectivity whereas the latter show very low activity. In addition, PdTiO2 exhibits two distinct NO x reduction pathways, thus greatly extending the useful temperature range. It is shown that the PdTiO2 low-temperature channel involves adsorption and subsequent dissociation of NO on reduced (Pd0) metal sites. The low activity of PdAl2O3 is a consequence of palladium remaining in an oxidized state under reaction conditions. The high-temperature NO reduction channel found with PdTiO2 is associated with the generation and subsequent reaction of NH x species.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. V. I. Parvulescu, P. Grange and B. Delmon, Catal. Today 46 (1998) 233.

    Google Scholar 

  2. A. Fritz and V. Pitchon, Appl. Catal. B13 (1997) 1.

    Google Scholar 

  3. G. T. Went, L. J. Leu, R. R. Rosin and A. T. Bell, J. Catal. 134 (1992) 492.

    Google Scholar 

  4. G. Busca, L. Lietti, G. Ramis and F. Berti, Appl. Catal. B18 (1998) 1.

    Google Scholar 

  5. A. Obuchi, A. Ohi, M. Nakamura, A. Ogata, K. Mizuno and H. Obuchi, Appl. Catal. B2 (1993) 71.

    Google Scholar 

  6. R. Burch, P. J. Millington and A. P. Walker, Appl. Catal. B4 (1994) 65.

    Google Scholar 

  7. K. Yokota, M. Fukui and T. Tanaka, Appl. Surf. Sci. 121/122 (1997) 273.

    Google Scholar 

  8. B. Frank, G. Emig and A. Renken, Appl. Catal. B19 (1998) 45.

    Google Scholar 

  9. A. Ueda, N. Takayuki, A. Masashi and T. Kobayashi, Catal. Today 45 (1998) 135.

    Google Scholar 

  10. R. Burch and M. D. Coleman, Appl. Catal. B23 (1999) 115.

    Google Scholar 

  11. C. N. Costa, V. N. Stathopoulos, V. C. Belessi and A. M. Efstathiou, J. Catal. 197 (2001) 350.

    Google Scholar 

  12. N. Macleod and R. M. Lambert, Appl. Catal. B35 (2002) 269.

    Google Scholar 

  13. A. Ueda, T. Nakao, M. Azuma and T. Kobayashi, Chem. Lett. (1998) 595.

  14. S. Komai, T. Hattori and Y. Murakami, J. Catal. 120 (1989) 370.

    Google Scholar 

  15. N. Macleod, J. Isaac and R. M. Lambert, J. Catal. 193 (2000) 115.

    Google Scholar 

  16. W. S. Kijlstra, D. S. Brand, E. K. Poels and A. Bliek, J. Catal. 171 (1997) 208.

    Google Scholar 

  17. F. C. Meunier, J. P. Breen, V. Zuzaniuk, M. Olsson and J. R. H. Ross, J. Catal. 187 (1999) 493.

    Google Scholar 

  18. S. Kameoka, Y. Ukisu and T. Miyadera, Phys. Chem. Chem. Phys. 2 (2000) 367.

    Google Scholar 

  19. N. Sheppard and C. De La Cruz, Catal. Today 70 (2001) 3.

    Google Scholar 

  20. T. E. Hoost, K. Otto and K. A. Laframboise, J. Catal. 155 (1995) 303.

    Google Scholar 

  21. T. J. Dines, C. H. Rochester and A. M. Ward, J. Chem. Soc. Faraday Trans. 87 (1991) 643.

    Google Scholar 

  22. K. Hadjiivanov and H. Knozinger, Phys. Chem. Chem. Phys. 2 (2000) 2803.

    Google Scholar 

  23. M. M. Kantcheva, V. Ph. Bushev and K. I. Hadjiivanov, J. Chem. Soc. Faraday Trans. 88 (1992) 3087.

    Google Scholar 

  24. T. Chafik, A. M. Efstathiou and X. E. Verykios, J. Phys. Chem. B101 (1997) 7968.

    Google Scholar 

  25. C. Descorme, P. Gelin, C. Lecuyer and M. Primet, J. Catal. 177 (1998) 352.

    Google Scholar 

  26. M. Valden, R. L. Keiski, N. Xiang, J. Pere, J. Aaltonen, M. Pessa, T. Maunula, A. Savimaki, A. Lahti and M. Harkonen, J. Catal. 161 (1996) 614.

    Google Scholar 

  27. F. Radtke, R. A. Koeppel, E. G. Minardi and A. Baiker, J. Catal. 167 (1997) 127.

    Google Scholar 

  28. A. L. Goodman, E. T. Bernard and V. H. Grassian, J. Phys. Chem. A105 (2001) 6443.

    Google Scholar 

  29. T. E. Hoost and K. Otto, Appl. Catal. A92 (1992) 39.

    Google Scholar 

  30. T. Maillet, J. Barbier, P. Gelin, H. Praliaud and D. Duprez, J. Catal. 202 (2001) 367.

    Google Scholar 

  31. K. Almusaiteer and S. S. C. Chuang, J. Catal. 184 (1999) 189.

    Google Scholar 

  32. N. Sheppard and C. De La Cruz, Catal. Today 70 (2001) 3.

    Google Scholar 

  33. A. J. Renouprez, J. F. Trillat, G. Bergeret, P. Delichere, J. L. Rousset, J. Massardier, D. Loffreda, D. Simon, F. Delbecq and P. Sautet, J. Catal. 198 (2001) 243.

    Google Scholar 

  34. A. El Hamdaoui, G. Bergeret, J. Massardier, M. Primet and A. Renouprez, J. Catal. 148 (1994) 47.

    Google Scholar 

  35. F. B. Noronha, M. A. S. Baldanza and M. Schmal, J. Catal. 188 (1999) 270.

    Google Scholar 

  36. A. M. Venezia, L. F. Liotta, G. Deganello, P. Terreros, M. A. Pena and J. L. G. Fierro, Langmuir 15 (1999) 1176.

    Google Scholar 

  37. K. Almusaiteer and S. S. C. Chuang, J. Catal. 180 (1998) 161.

    Google Scholar 

  38. T. E. Hoost, K. Otto and K. A. Laframboise, J. Catal. 155 (1995) 303.

    Google Scholar 

  39. G. Ramis, G. Busca, V. Lorenzelli and P. Forzatti, Appl. Catal. 64 (1990) 243.

    Google Scholar 

  40. G. Ramis, L. Yi, G. Busca, M. Turco, E. Kotur and R. J. Willey, J. Catal. 157 (1995) 523.

    Google Scholar 

  41. N. Y. Topsøe, H. Topsøe and J. A. Dumesic, J. Catal. 151 (1995) 226.

    Google Scholar 

  42. G. Ramis, G. Busca, F. Bregani and P. Forzatti, Appl. Catal. 64 (1990) 259.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK

    Norman Macleod, Rachel Cropley & Richard M. Lambert

Authors
  1. Norman Macleod
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Rachel Cropley
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Richard M. Lambert
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Macleod, N., Cropley, R. & Lambert, R.M. Efficient Reduction of NO x by H2 Under Oxygen-Rich Conditions over Pd/TiO2 Catalysts: An in situ DRIFTS Study. Catalysis Letters 86, 69–75 (2003). https://doi.org/10.1023/A:1022611109139

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1022611109139

Search

Navigation