Get access

One-Pot Sol–Gel Preparation for Efficient Cobalt–Molybdenum–Titania Hydrotreating Catalysts

Authors

  • D. L. Nguyen,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • S. Gillot,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • D. O. Souza,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • Dr. P. Blanchard,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • Prof. C. Lamonier,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • Dr. E. Berrier,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • T. V. Kotbagi,

    1. National Chemical Laboratory, Pune, Maharashtra 411 008 (India)
    Search for more papers by this author
  • Dr. M. K. Dongare,

    1. National Chemical Laboratory, Pune, Maharashtra 411 008 (India)
    Search for more papers by this author
  • Dr. S. B. Umbarkar,

    1. National Chemical Laboratory, Pune, Maharashtra 411 008 (India)
    Search for more papers by this author
  • Prof. S. Cristol,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • Prof. E. Payen,

    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author
  • Dr. C. Lancelot

    Corresponding author
    1. Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    • Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, Université Lille Nord de France, 59655 Villeneuve d'Ascq (France), Fax: (+33) 3-20-43-65-61
    Search for more papers by this author

Abstract

Titania-based hydrodesulfurization catalysts were prepared by using a one-pot sol–gel method with the titanium peroxo complex as titanium precursor and molybdenum and cobalt precursors dissolved in the aqueous hydrogen peroxide solution used during synthesis. Catalysts with MoO3 loadings varying from 5 to 40 wt % and a Co/Mo atomic ratio of 0.5 were prepared. Solids with molybdenum loadings below 20 wt % MoO3 demonstrated poor hydrodesulfurization activity for the model compound thiophene. This was attributed to the presence of a large amount of embedded cobalt and molybdenum species in the titania matrix. A significant increase in the catalytic activity was observed for solids containing 20 and 25 wt % of MoO3 on which active species appeared to be accessible on the titania surface. Furthermore, the highest conversion obtained on these sol–gel solids was superior to the highest conversion obtained on reference catalysts prepared through the impregnation of ammonium heptamolybdate and cobalt nitrate on commercial titania.

Ancillary