Catalysis Letters

, Volume 30, Issue 1–4, pp 65–75 | Cite as

In situ FTIR and UV/VIS spectroscopic study of the generation of anionic Pt-carbonyl complexes within a faujasite matrix

  • G. Schulz-Ekloff
  • R. J. Lipski
  • N. I. Jaeger
  • P. Hülstede
  • L. Kubelkova
Article

Abstract

The temporal generation of anionic platinum-carbonyl complexes in platinum ionexchanged zeolites X and Y by reductive carbonylation at 105 Pa and 363 K is monitored by in situ UV/VIS and FTIR spectroscopy. A monomer [Pt3(CO)6]2−, exhibiting bands at 318 and 456 nm in the UV/VIS spectra and at 1790 and 2025 cm−1 in the FTIR spectra, is the only platinum/species formed in NaX. The monomer as well as oligomers are generated in NaY, where the formation of the latter species is due to the stronger acidity in the NaY as compared to NaX. The decomposition of the complexes results in the generation of Pt clusters of the size ≤1 nm.

Keywords

anionic Pt-carbonyl complexes CO chemisorption on Pt IR spectroscopy UV/VIS diffuse reflectance spectroscopy faujasites 

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References

  1. [1]
    B. Breitscheidel, J. Zieder and U. Schubert, Chem. Mater. 3 (1991) 559.Google Scholar
  2. [2]
    U. Schubert, B. Breitscheidel, H. Buhler, Ch. Egger and W. Urbaniak, Mater. Res. Soc. Symp. Proc. 271 (1992) 621.Google Scholar
  3. [3]
    G. Schmid, R. Kupper, H. Hess, J.-O. Mahn and J.-O. Bovin, Chem. Ber. 124 (1991) 1889.Google Scholar
  4. [4]
    W.M.H. Sachtler and Z. Zhang, Adv. Catal. 39 (1993) 129.Google Scholar
  5. [5]
    P. Gallezot, A. Alarcon-Diaz, J.-A. Dalmon, A.J. Renouprez and B.I. Imelik, J. Catal. 39 (1975) 334.Google Scholar
  6. [6]
    A. Kleine, P.L. Ryder, N.I. Jaeger and G. Schulz-Ekloff, J. Chem. Soc. Faraday Trans. 82 (1986) 205.Google Scholar
  7. [7]
    M. Ichikawa, Adv. Catal. 38 (1992) 283.Google Scholar
  8. [8]
    G.A. Ozin and C. Gil, Chem. Rev. 89 (1989) 2831.Google Scholar
  9. [9]
    G. Meyer, D. Wöhrle, M. Mohl and G. Schulz-Ekloff, J. Mol. Catal. 24 (1984) 115.Google Scholar
  10. [10]
    A. de Mallmann and D. Barthomeuf, Catal. Lett. 5 (1990) 293.Google Scholar
  11. [11]
    G.J. Li, T. Fujimoto, A. Fukuoka and M. Ichikawa, Catal. Lett. 12 (1992) 171.Google Scholar
  12. [12]
    D.J. Underwood, R.H. Hoffmann, K. Tatsumi and Y. Yamamoto, J. Am. Chem. Soc. 107 (1985) 5968.Google Scholar
  13. [13]
    J.C. Calabrese, L.F. Dahl, P. Chini and G. Longoni, J. Am. Chem. Soc. 96 (1974) 2614.Google Scholar
  14. [14]
    G. Longoni and P. Chini, J. Am. Chem. Soc. 98 (1976) 7225.Google Scholar
  15. [15]
    H. Bischoff, N.I. Jaeger and G. Schulz-Ekloff, Z. Phys. Chem. (Leipzig) 271 (1990) 1093.Google Scholar
  16. [16]
    H. Bischoff, N.I. Jaeger, G. Schulz-Ekloff and L. Kubelkova, J. Mol. Catal. 80 (1993) 95.Google Scholar
  17. [17]
    J.R. Chang, D.C. Koningsberger and B.C. Gates, J. Am. Chem. Soc. 114 (1992) 6460.Google Scholar
  18. [18]
    S. Bhaduri and K.R. Sharma, J. Chem. Soc. Chem. Commun. (1983) 1412.Google Scholar
  19. [19]
    S. Bhaduri and K.R. Sharma, J. Chem. Soc. Dalton Trans. (1984) 2309.Google Scholar
  20. [20]
    G.J. Li, T. Fujimoto and M. Ichikawa, J. Chem. Soc. Chem. Commun. (1991) 1337.Google Scholar
  21. [21]
    D. Barthomeuf, in:Catalysis and Adsorption by Zeolites, Studies in Surface Science and Catalysis, Vol. 65, eds. G. Öhlmann, H. Pfeifer and R. Fricke (Elsevier, Amsterdam, 1990) p. 157.Google Scholar
  22. [22]
    A. Basu, S. Bhaduri and K.R. Sharma, J. Chem. Soc. Dalton Trans. (1984) 2315.Google Scholar
  23. [23]
    A. Kiennemann, J.P. Hindermann, R. Breault and H. Idriss, ACS Symp. Ser. (1987) 328.Google Scholar
  24. [24]
    T. Lopez, A. Romero and R. Gomez, J. Non-Cryst. Solids 127 (1991) 105.Google Scholar
  25. [25]
    J.A. Creighton and D.G. Eadon, J. Chem. Soc. Faraday Trans. 87 (1991) 3881.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1995

Authors and Affiliations

  • G. Schulz-Ekloff
    • 1
  • R. J. Lipski
    • 1
  • N. I. Jaeger
    • 1
  • P. Hülstede
    • 1
  • L. Kubelkova
    • 2
  1. 1.Institut für Angewandte und Physikalische ChemieUniversität Bremen-FB 2BremenGermany
  2. 2.J. Heyrovsky Institute of Physical Chemistry and ElectrochemistryCzech Academy of SciencesPrague 8Czech Republic

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