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Catalyst decomposition during temperature programmed desorption of bases from promoted sulfated zirconias

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Abstract

Results from temperature programmed desorption of ammonia, pyridine, and benzene from sulfated zirconia catalysts promoted with Fe, Mn, and Ni are compared. Without adsorbates, catalysts are thermally stable below 900 K. With adsorbates, catalysts decompose partially or completely between 700 and 900 K. It is shown that previously reported conclusions regarding acid strength distributions for promoted sulfated zirconia catalysts that were based on the results of ammonia and benzene thermal desorption studies are likely incorrect because the decomposition of adsorbates and the catalyst were not considered.

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Authors and Affiliations

  1. Department of Chemistry and Biochemistry, University of Oklahoma, 73019, Norman, OK, USA

    Emmanuel C. Sikabwe & Robert L. White

  2. School of Chemical Engineering, University of Oklahoma, 73019, Norman, OK, USA

    Mario A. Coelho & Daniel E. Resasco

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  1. Emmanuel C. Sikabwe
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  2. Mario A. Coelho
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  3. Daniel E. Resasco
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  4. Robert L. White
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Sikabwe, E.C., Coelho, M.A., Resasco, D.E. et al. Catalyst decomposition during temperature programmed desorption of bases from promoted sulfated zirconias. Catal Lett 34, 23–30 (1995). https://doi.org/10.1007/BF00808318

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  • DOI: https://doi.org/10.1007/BF00808318

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