Skip to main content
SpringerLink
Log in

Comparison of Two Preparation Methods in the Redox Properties of Pd/CeO2/Ta/Si Model Catalysts: Spin Coating Versus Sputter Deposition

  • Published:
Catalysis Letters Aims and scope Submit manuscript

Abstract

Pd/CeO2/Ta/Si model catalysts were prepared by spin coating and sputter deposition method, and characterized by means of AFM, SEM and in situ XPS, especially focusing on the redox properties of Ce and Pd elements. Compared with thin CeO2 films (about 2.2nm), the thicker ones (about 22nm) maintained Ce4+ oxidation state even after treatment with H2 up to 500°C while the presence of Pd facilitated the reduction of ceria. The reduction of ceria brought about following that of PdO, which was explained by the spillover of hydride in Pd to CeO2 originating from hydrogen adsorption on the Pd surface. Compared with the sputter deposition method, spin coating produced the smaller size of Pd particles, thus leading to formation of the stable PdO species against hydrogen. Based on these results, a schematic model of Pd/CeO2/Ta/Si was suggested and it might be assumed that spin coating method provided with an environment similar to the conventional impregnation.

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. B. J. Cooper, Plat. Metals Rev. 38 (1994) 2.

    Google Scholar 

  2. J. Z. Shyu, K. Otto, W. L. H. Watkins, G. W. Graham, R. K. Belitz and H. S. Gandhi, J. Catal. 114 (1988) 23.

    Google Scholar 

  3. C. Sudhakar and M. A. Vannice, J. Catal. 95 (1985) 227.

    Google Scholar 

  4. L. Fan and K. Fujimoto, Appl. Catal. 106 (1993) L1.

  5. S. Zhao, T. Luo and R. J. Gorte, J. Catal. 221 (2004) 413.

    Google Scholar 

  6. T. Bunluesin, R. J. Gorte and G. W. Graham, Appl. Catal. B 14 (1997) 105.

    Google Scholar 

  7. T. Bunluesin, R. J. Gorte and G. W. Graham, Appl. Catal. B 15 (1998) 107.

    Google Scholar 

  8. W. W. Flack, D. S. Soong, A. T. Bell and D. W. Hess, J. Appl. Phys. 56 (1984) 1199.

    Google Scholar 

  9. E. M. Kuipers, C. Laszlo and W. Wieldraaijer, Catal. Lett. 17 (1993) 71.

    Google Scholar 

  10. R. M. van Hardeveld, P. L. J. Gunter, L. J. van Ijzendoorn, W. Wieldraaijer, E. W. Kuipersa and J. W. Niemantsverdriet, Appl. Surf. Sci. 84 (1995) 339.

    Google Scholar 

  11. C. Doornkamp, C. Laszlo, W. Wieldraaijer and E. W. Kuipers, J. Mater. Res. 10 (1995) 411.

    Google Scholar 

  12. L. C. A. van den Oetelaar, A. Partridge, S. L. G. Toussaint, C. F. L. Flipsea and H. H. Brongersma, J. Phys. Chem. B 102 (1998) 9541.

    Google Scholar 

  13. M. A. Brookshier, C. C. Chusuei and D. W. Goodman, Langmuir 15 (1999) 2043.

    Google Scholar 

  14. D. A. Creaser, P. G. Harrison, M. A. Morris and B. A. Wol ndale, Catal. Lett. 23 (1994) 13.

    Google Scholar 

  15. J. Z. Shyu, W. H. Weber and H. S. Gandhi, J. Phys. Chem. 92 (1988) 4964.

    Google Scholar 

  16. M. Alexandrou and R. M. Nix, Surf. Sci. 321 (1994) 47.

    Google Scholar 

  17. D. N. Belton and S. J. Schmieg, J. Vac. Sci. Tech. A 11 (1993) 2330.

    Google Scholar 

  18. D. H. Kim, S. I. Woo and O.-B. Yang, Appl. Catal. B 26 (2000) 285.

    Google Scholar 

  19. R. J. Behm, V. Penka, M.-G. Cattania, K. Christmann and G. Ertl, J. Chem. Phys. 78 (1983) 7486.

    Google Scholar 

  20. M.-G. Cattania, V. Penka, R. J. Behm, K. Christmann and G. Ertl, Surf. Sci. 126 (1983) 382.

    Google Scholar 

  21. B. Kasemo, S. Johansson, H. Persson, P. Thorma ¨hlen and V. P. Zhdanov, Topic. Catal. 13 (2000) 43.

    Google Scholar 

  22. M. Ba ¨umer and H.-J. Freund, Prog. Surf. Sci. 61 (1999) 127.

    Google Scholar 

Download references

Author information

Authors and Affiliations

  1. Department of Chemical and Biomolecular Engineering, and Center for Ultramicrochemical Process Systems, Korea, Advanced Institute Science and Technology (KAIST), 373-1 Kusong-dong, 305-701, South Korea

    Do Heui Kim & Seong Ihl Woo

  2. Chemistry and Physics Science Division, Pacific Northwest National Laboratory, 902 Battelle Blvd., Mail Stop: K8-03, Richland, WA 99352, USA

    Do Heui Kim

Authors
  1. Do Heui Kim
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Seong Ihl Woo
    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

Kim, D.H., Woo, S.I. Comparison of Two Preparation Methods in the Redox Properties of Pd/CeO2/Ta/Si Model Catalysts: Spin Coating Versus Sputter Deposition. Catalysis Letters 98, 23–28 (2004). https://doi.org/10.1007/s10562-004-6443-9

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10562-004-6443-9

Search

Navigation