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One-step sol-gel synthesis of sulfated-zirconia catalysts

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Abstract

Sulfated-zirconia catalysts were prepared by a one-step sol-gel method. Two different protocols were studied in which sulfuric acid is introduced either with the hydrolysis water, or in the zirconium alkoxide solution inn-propanol. After calcination at 923 K these two materials were compared with sulfated-zirconia prepared in two steps by post-sulfation of zirconium hydroxide obtained either by the sol-gel method or by precipitation of inorganic salts. The sulfated-zirconias prepared by the one-step protocol are the most active catalysts for the hydroconversion ofn-hexane. Moreover, the sample prepared by adding sulfuric acid through the hydrolysis water exhibits different textural properties and enhanced activity forn-hexane conversion. These different behaviours cannot be explained by the sulfur content.

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Author notes

  1. F. Figuéras

    Present address: Institut de Recherche sur la Catalyse du CNRS, 2 Av. A. Einstein, 69626, Villeurbanne, France

Authors and Affiliations

  1. Laboratoire de Matériaux Catalytiques et Catalyse en Chimie Organique, URA 418 du CNRS, 8 rue de l'Ecole Normale, 34053, Montpellier Cedex 1, France

    D. Tichit, B. Coq, H. Armendariz & F. Figuéras

Authors
  1. D. Tichit
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  2. B. Coq
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  3. H. Armendariz
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  4. F. Figuéras
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Tichit, D., Coq, B., Armendariz, H. et al. One-step sol-gel synthesis of sulfated-zirconia catalysts. Catal Lett 38, 109–113 (1996). https://doi.org/10.1007/BF00806908

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  • DOI: https://doi.org/10.1007/BF00806908

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