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Local structure determination of aluminum in Y zeolite: application of low energy X-ray absorption fine structure spectroscopy

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Abstract

The local Al structure and electronic properties in Na-Y, NH4-Y and H-Y zeolites have been determined by low energy AlXAFS. The Al-O bond distance of 1.700 Å in H-Y is longer than that in NH4-Y and Na-Y, 1.636 and 1.620 Å, respectively. In addition, the white line intensity of the Alion in H-Y is higher than in NH4-Y and Na-Y, indicating the electron density on the Alion is lower in H-Y than in the other two catalysts. The results of experimental Al-O bond distance and white line intensities are qualitatively in agreement with theoretically calculated Al-O bond distances in aluminosilicate clusters. However, further work is required in order to quantitatively evaluate the near edge structure of the X-ray absorption data.

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Authors and Affiliations

  1. Laboratory of Inorganic Chemistry and Catalysis, Debye Institute, Utrecht University, PO Box 80083, 3508, TB Utrecht, The Netherlands

    D. C. Koningsberger

  2. Amoco Research Center, 150W. Warrenville Rd., 60566-7011, Naperville, IL, USA

    J. T. Miller

Authors
  1. D. C. Koningsberger
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  2. J. T. Miller
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Koningsberger, D.C., Miller, J.T. Local structure determination of aluminum in Y zeolite: application of low energy X-ray absorption fine structure spectroscopy. Catal Lett 29, 77–90 (1994). https://doi.org/10.1007/BF00814254

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  • DOI: https://doi.org/10.1007/BF00814254

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