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Platinum-sulfated-zirconia. Infrared study of adsorbed pyridine

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Abstract

Pyridine adsorption on sulfated zirconia (SO 42− -ZrO2) provides evidence for infrared bands characteristic of both Brønsted and Lewis acid sites. Samples treated at 100°C retain water and have a higher fraction of Brønsted acidity than when the sample is treated at 400°C. The fraction of Brønsted acid sites observed for SO 42− -ZrO2 is the same in the presence or absence of supported Pt. Based on pyridine adsorption, exposure to gaseous hydrogen at 100 or 150°C did not significantly alter the fraction of Brønsted acid sites following the exposure to hydrogen.

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Authors and Affiliations

  1. Center for Applied Energy Research, University of Kentucky, 3572 Iron Works Pike, 40511, Lexington, KY, USA

    Chunjie Zhang & Burtron H. Davis

  2. Department of Chemical Engineering, University of Louisville, Louisville, KY, 40292, USA

    Raul Miranda

Authors
  1. Chunjie Zhang
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  2. Raul Miranda
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  3. Burtron H. Davis
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Zhang, C., Miranda, R. & Davis, B.H. Platinum-sulfated-zirconia. Infrared study of adsorbed pyridine. Catal Lett 29, 349–359 (1994). https://doi.org/10.1007/BF00807114

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  • DOI: https://doi.org/10.1007/BF00807114

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