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Determination of SBA-15 acidity through n-butyl amine TPD: a theoretical and experimental study

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Abstract

In this study, the interaction ways between n-butyl amine and SBA-15 molecular sieve were evaluated when the TPD technique is carried out to determine the total acidity of that solid. Experimental results (FTIR, TG/DTG, total acid, and catalytic activity) and theoretical calculations demonstrated that the n-butyl amine, used as probe molecule to total acidity determined by TPD, can act as acid or base depending on the nature and force of the active sites on SBA-15.

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Acknowledgments

The authors would like to thank the FAPEPI, FINEP, CENAPAD and LCP-UFRN by support in the development of this work.

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Authors and Affiliations

  1. Department of Chemistry, Nature Science Center, State University of Piaui, Teresina, Brazil

    Geraldo E. Luz Jr., Francisco C. A. Lima & Cicero O. Costa Neto

  2. Department of Chemistry, Nature Science Center, Federal University of Piaui, Teresina, Brazil

    Gizeuda L. Paz

  3. Chemistry Institute, Federal University of Rio Grande do Norte, Natal, Brazil

    Edjane F. B. Silva & Marcela N. Barbosa

Authors
  1. Geraldo E. Luz Jr.
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  2. Francisco C. A. Lima
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  3. Cicero O. Costa Neto
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  4. Gizeuda L. Paz
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  5. Edjane F. B. Silva
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  6. Marcela N. Barbosa
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Correspondence to Geraldo E. Luz Jr..

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Luz, G.E., Lima, F.C.A., Neto, C.O.C. et al. Determination of SBA-15 acidity through n-butyl amine TPD: a theoretical and experimental study. J Mater Sci 48, 6885–6890 (2013). https://doi.org/10.1007/s10853-013-7492-5

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  • DOI: https://doi.org/10.1007/s10853-013-7492-5

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