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Hydroisomerization of n-decane over SAPO-11 catalysts synthesized with methylamine as co-template

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Abstract

The present work deals with preliminary studies concerning a new synthesis approach to prepare SAPO materials with AEL structure and evaluate their catalytic behavior in the hydroisomerization of long paraffins. The new SAPO-11 catalysts were synthesized with the help of a small amine (methylamine, MA) added during the preparation of the initial gel. As MA incorporates into the structure of the final materials, it contributes, together with DPA (dipropylamine), to an increase in Si incorporation as isolated species, which results in Brønsted acid sites. Thus, this new and original synthesis strategy allows to obtain materials with enhanced Brønsted acidity when compared with free MA materials. The catalysts were tested in n-decane hydroisomerization (n-decane was used as a model molecule) and confirmed the effect of MA on the acidic properties of the catalysts. The samples synthesized with MA present a higher number of acid sites that increase the catalytic conversion but have a negative effect in the isomerization selectivity, i.e. a more significant amount of cracking products is formed.

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Authors and Affiliations

  1. DEQ and CIEQB, ISEL, R. Cons. Emídio Navarro 1959-007, Lisbon, Portugal

    Raquel Bértolo, João M. Silva & Angela Martins

  2. IBB, Instituto Superior Técnico, Av. Rovisco Pais 1049-001, Lisbon, Portugal

    Auguste Fernandes, Filipa Ribeiro, João M. Silva & Fernando Ramôa Ribeiro

Authors
  1. Raquel Bértolo
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  2. Auguste Fernandes
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  3. Filipa Ribeiro
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  4. João M. Silva
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  5. Angela Martins
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  6. Fernando Ramôa Ribeiro
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Corresponding author

Correspondence to Fernando Ramôa Ribeiro.

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Bértolo, R., Fernandes, A., Ribeiro, F. et al. Hydroisomerization of n-decane over SAPO-11 catalysts synthesized with methylamine as co-template. Reac Kinet Mech Cat 99, 183–191 (2010). https://doi.org/10.1007/s11144-009-0110-5

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  • DOI: https://doi.org/10.1007/s11144-009-0110-5

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