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Effect of sulphate groups on catalytic properties of chromium supported by zirconia in the n-hexane aromatization

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Abstract

Catalysts based on chromium supported by sulphated and unsulphated zirconia have been synthesised, in one step, by sol–gel method and dried in hypercritical solvent conditions. Comparative study of their catalytic properties shows that dispersed Cr3+ seems to be the active species in the n-hexane aromatisation reaction. However, the acidity generated by sulphate groups acts as coke eliminator of the layers deposed on the surface mainly when catalyst is calcined at high temperature.

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Authors and Affiliations

  1. Laboratoire de Chimie des Matériaux et Catalyse, Département de Chimie, Faculté des Sciences de Tunis, 2092, El Manar Tunis, Tunisia

    Sahar Raissi, Mohamed Kadri Younes & Abdelhamid Ghorbel

  2. Laboratoire des Matériaux, Surfaces et Procédés Pour la Catalyse, UMR 7515 CNRS—ULP—ECPM, 25 rue Becquerel, 67087, Strasbourg, France

    François Garin

Authors
  1. Sahar Raissi
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  2. Mohamed Kadri Younes
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  3. Abdelhamid Ghorbel
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  4. François Garin
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Correspondence to Sahar Raissi.

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Raissi, S., Younes, M.K., Ghorbel, A. et al. Effect of sulphate groups on catalytic properties of chromium supported by zirconia in the n-hexane aromatization. J Sol-Gel Sci Technol 53, 412–417 (2010). https://doi.org/10.1007/s10971-009-2113-0

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  • DOI: https://doi.org/10.1007/s10971-009-2113-0

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