Skip to main content
Log in

Infrared Study of the Influence of Surface Hydrophobicity of the Support of Rh/SiO2 Catalysts

  • Published:
Catalysis Letters Aims and scope Submit manuscript

Abstract

The characteristics of the superficial structure of a hydrophobic silica subjected to treatment at various temperatures and heating times, and of the Rh catalysts supported on the silica, are studied by FTIR. The catalysts obtained have different dispersions that depend on the superficial methoxyl fraction of the support, and are independent of the superficial OH groups. This procedure for changing the metal dispersion is different from the pretreatment of the catalyst reported previously.

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

Access this article

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

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. K.C. Taylor, in: Catalysis Science and Technology, Vol. 5, eds. J.R. Anderson and M. Boudart (Springer, Berlin, 1984) p. 119; J.T. Kummer, Prog. Energy Combust. Sci. 6 (1980) 177; S. Schwegmann, H. Over, V. De Renzi and G. Ertl, Surf. Sci. 375 (1997) 91; D.R. Rainer, S.M. Vesecky, M. Koranne, W.S. Oh and D.W. Goodman, J. Catal. 167 (1997) 234.

    Google Scholar 

  2. S.H. Oh, G.B. Fisher, J.E. Carpenter and D.W. Goodman, J. Catal. 100 (1986) 360; S.H. Oh and C.C. Eickel, J. Catal. 128 (1991) 526.

    Google Scholar 

  3. A.C. Yang and C.W. Garland, J. Phys. Chem. 61 (1957) 1504.

    Google Scholar 

  4. M.L. Hair, in: Infrared Spectroscopy in Surface Chemistry (Marcel Dekker, New York, 1967), ch. 4, p. 83; J.B. Peri, J. Phys. Chem. 70 (1966) 2937.

    Google Scholar 

  5. F. Solymosi and M. Pasztor, J. Phys. Chem. 89 (1985) 4789.

    Google Scholar 

  6. J.T. Yates Jr., T.M. Duncan, S.D. Worley and R.W. Vaughan, J. Chem. Phys. 70 (1979) 1219; R.R. Cavanagh and J.T. Yates Jr., J. Chem. Phys. 74 (1981) 4150; J.T. Yates Jr. and K. Kolasinski, J. Chem. Phys. 79 (1983) 1026

    Google Scholar 

  7. P. Basu, D. Panayotov and J.T. Yates Jr., J. Phys. Chem. 91 (1987) 3133; J. Am. Chem. Soc. 110 (1988) 2074.

    Google Scholar 

  8. D.K. Paul, T.H. Ballinger and J.T. Yates Jr., J. Phys. Chem. 94 (1990) 4617; D.K. Paul and J.T. Yates Jr., J. Phys. Chem. 95 (1991) 1699.

    Google Scholar 

  9. Silica 98; International Conference on Silica Science and Technology, from S (Synthesis) to A (Applications), Mulhouse, France (September 1998)

  10. Hydrophobic Aerosil, Manufacture, Properties and Applications No. 6, Technical Bulletins Pigments, Degussa AG (1981).

  11. P. Araya and C. Weissmann, Catal. Lett. 68 (2000) 33

    Google Scholar 

  12. P. Araya and V. Diaz, J. Chem. Soc. Faraday Trans. 93 (1997) 3887

    Google Scholar 

  13. J.R. Anderson, in: Structure of Metallic Catalysts (Academic Press, 1975).

  14. N. Chacón, F. Díaz and P. Araya, submitted for publication.

  15. Ch. Wong and R. McCabe, J. Catal. 107 (1987) 535.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Rights and permissions

Reprints and permissions

About this article

Cite this article

Cortés, J., Jimenez, R. & Araya, P. Infrared Study of the Influence of Surface Hydrophobicity of the Support of Rh/SiO2 Catalysts. Catalysis Letters 82, 255–259 (2002). https://doi.org/10.1023/A:1020587500070

Download citation

  • Issue Date:

  • DOI: https://doi.org/10.1023/A:1020587500070

Navigation