Advertisement

Catalysis Letters

, Volume 29, Issue 1–2, pp 91–103 | Cite as

Characterization of bimetallic NaY-supported Pt-Pd catalyst by EXAFS, TEM and TPR

  • Tatjana Rades
  • Chanho Pak
  • Michèle Polisset-Thfoin
  • Ryong Ryoo
  • Jacques Fraissard
Article

Abstract

NaY-supported bimetallic Pt-Pd catalysts have been studied by TEM, TPR and EXAFS. Small, randomly mixed particles are formed in the zeolite cages. When the Pt content is increased, a Pt core structure appears and the dispersion increases. Particle diameters are about 1–2 nm for bimetallic samples.

Keywords

bimetallic catalysts Pt Pd EXAFS TEM TPR 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    M.S. Tzou, K. Asakura, Y. Yamazaki and H. Kuroda. Catal. Lett. 11 (1991) 33.Google Scholar
  2. [2]
    D.K. Chakrabarty, K.M. Rao, N. Sundararaman and K. Chandavar, Appl. Catal. 28 (1986) 69.Google Scholar
  3. [3]
    H. Miura, Y. Ushikubo, K. Sugiyama and T. Matsuda, React. Kinet. Catal. Lett. 32 (1986) 487.Google Scholar
  4. [4]
    Y.L. Lam, J. Criado and M. Boudart, Nouv. J. Chimie 1 (1977) 461.Google Scholar
  5. [5]
    A. O'Cinneide and F.G. Gault, J. Catal. 37 (1975) 311.Google Scholar
  6. [6]
    D. Rouabah and J. Fraissard, J. Catal. 144 (1993) 30.Google Scholar
  7. [7]
    G. Jenner, G. Bitsi and P. Andrianary, Appl. Catal. 24 (1986) 319.Google Scholar
  8. [8]
    J.W. Niemantsverdriet, in:Studies in Surface Science and Catalysis, Vol. 79, eds. J.A. Moulijn, P.W.N.M. van Leeuwen and R.A. van Santen (Elsevier, Amsterdam, 1993) ch. 10.Google Scholar
  9. [9]
    P. Gallezot, A. Alarcon-Diaz, J.-A. Dalmon, A.J. Renouprez and B. Imelik, J. Catal. 39 (1975) 334.Google Scholar
  10. [10]
    M.S. Tzou, B. K. Teo and W. M. H. Sachtler, J. Catal. 113 (1988) 220.Google Scholar
  11. [11]
    S.T. Homeyer and W.M.H. Sachtler, J. Catal. 117 (1989) 91.Google Scholar
  12. [12]
    B.K. Teo,EXAFS: Basic Principles and Data Analysis (Springer, Berlin, 1986).Google Scholar
  13. [13]
    N. Toshima, M. Harada, T. Yonezawa, K. Kushihashi and K. Asakura, J. Phys. Chem. 95 (1991) 7448.Google Scholar
  14. [14]
    D.C. Koningsberger and R. Prins,X-ray Absorption Principles. Applications, Techniques of EXAFS, SEXAFS and XANES (Wiley, New York, 1988).Google Scholar
  15. [15]
    J.J. Rehr, J. Mustre de Leon, S.I. Zabinsky and R.C. Albers, J. Am. Chem. Soc. 113 (1991) 5135.Google Scholar
  16. [16]
    G.H. Via, K.F. Drake Jr., G. Meitzner, F.W. Lytle and J.H. Sinfelt, Catal. Lett. 5 (1990) 25.Google Scholar
  17. [17]
    R. Ryoo, C. Pak and S.J. Cho,Proc. 7th Int. Conf. on XAFS, Kobe, August 1992, Japan J. Appl. Phys. 32 (1993) 475.Google Scholar
  18. [18]
    J.-G. Kim, S.-K. Ihm, J.Y. Lee and R. Ryoo, J. Phys. Chem. 95 (1991) 8546.Google Scholar
  19. [19]
    R. van Hardeveld and F. Hartog. Surf. Sci. 15 (1969) 189.Google Scholar
  20. [20]
    A.T. Ashcroft, A.K. Cheetham, P.J.F. Harris, R.H. Jones, S. Natarajan, G. Sankar, N.J. Stedman and J.M. Thomas, Catal. Lett. 24 (1994) 47.Google Scholar
  21. [21]
    G. Sankar, J.M. Thomas, D. Waller, J.W. Couves, C.R.A. Catlow and G.N. Greaves, J. Phys. Chem. 96 (1992) 7485.Google Scholar
  22. [22]
    R. Ryoo, S.J. Cho, C. Pak and J.Y. Lee, Catal. Lett. 20 (1993) 107.Google Scholar
  23. [23]
    B.S. Clausen, L. Grábæk, H. Topsøe, L.B. Hansen, P. Stoltze, J.K. Nørskov and O.H. Nielsen, J. Catal. 141 (1993) 368.Google Scholar
  24. [24]
    M. Polisset, Doctoral Thesis, Universit de Paris VI, France (1990).Google Scholar
  25. [25]
    S.T. Homeyer and W.M.H. Sachtler, J. Catal. 118 (1989) 266.Google Scholar
  26. [26]
    M. Polisset and J. Fraissard, to be published.Google Scholar
  27. [27]
    F.B. Noronha, M. Schmal, M. Primet and R. Fréty, Appl. Catal. 78 (1991) 125.Google Scholar
  28. [28]
    H. Lieske and J. Völter, J. Catal. 90 (1984) 96.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • Tatjana Rades
    • 1
  • Chanho Pak
    • 2
  • Michèle Polisset-Thfoin
    • 1
  • Ryong Ryoo
    • 2
  • Jacques Fraissard
    • 1
  1. 1.Laboratoire de Chimie des Surfaces, CNRS URA1428Université Pierre et Marie CurieParis Cedex 05France
  2. 2.Department of Chemistry and Center for Molecular ScienceKorea Advanced Institute of Science and TechnologyTaejonKorea

Personalised recommendations