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IR spectroscopic study of Pt/Kl zeolites using adsorption of CO as a molecular probe

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Abstract

FTIR spectra of CO adsorbed on Pt/KL catalysts show that the relative band intensities and the total dispersion markedly depend on the catalyst preparation method (ion exchange, incipient wetness impregnation or co-impregnation with KCl). The CO stretching frequency of the dominant band for linear CO is shifted to higher wavenumbers, parallel with the proton concentration in the reduced catalyst, which is derived independently from the intensity of the IR bands of the OH groups. The results are in accordance with the model that electron-deficient platinum particles are platinum-proton adducts.

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Authors and Affiliations

  1. V.N.Ipatieff Laboratory, Center for Catalysis and Surface Science, Northwestern University, 60208, Evanston, Illinois, USA

    Leonid M. Kustov, Daniel Ostgard & Wolfgang M. H. Sachtler

Authors
  1. Leonid M. Kustov
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  2. Daniel Ostgard
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  3. Wolfgang M. H. Sachtler
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Additional information

On leave from: N.D. Zelinsky Institute of Organic Chemistry, Academy of Sciences, Moscow, USSR.

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Kustov, L.M., Ostgard, D. & Sachtler, W.M.H. IR spectroscopic study of Pt/Kl zeolites using adsorption of CO as a molecular probe. Catal Lett 9, 121–126 (1991). https://doi.org/10.1007/BF00769090

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  • DOI: https://doi.org/10.1007/BF00769090

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