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Tungsten/Alumina Catalysts: Effect of H3PW12O40 Countercation on Surface Properties and Hydrodesulfurization Activity

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Abstract

H3PW12O40 heteropoly acid (HPW12) and its Co, Fe, Ni salts supported on alumina have been used to model hydrodesulfurization catalysts of different activity. All catalysts revealed a promoting effect of the countercation in thiophene hydrodesulfurization, that of the nickel cation being the highest. The catalysts were characterized by measurements of surface area, HDS activity, TPR, FTIR, and DR spectra. IR spectra confirmed an effect of the countercation on the phase composition of the supported heteropoly compounds. 12-Tungstoaluminate heteropoly anions and coordinately unsaturated anions of HPW12 were detected in the IR spectra of the catalysts. The hydrotreating activity of the catalysts was proportional to the amount of hydrogen consumed in the range 20–500°C during TPR.

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Authors and Affiliations

  1. Institute of Catalysis, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

    A. A. Spojakina, N. G. Kostova & M. Stamenova

  2. lnstitute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, 165 02, Prague 6, Czech Republic

    K. Jiratova & J. Kocianova

Authors
  1. A. A. Spojakina
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  2. K. Jiratova
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  3. N. G. Kostova
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  4. J. Kocianova
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  5. M. Stamenova
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Spojakina, A.A., Jiratova, K., Kostova, N.G. et al. Tungsten/Alumina Catalysts: Effect of H3PW12O40 Countercation on Surface Properties and Hydrodesulfurization Activity. Kinetics and Catalysis 44, 813–818 (2003). https://doi.org/10.1023/B:KICA.0000009059.80675.4e

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  • DOI: https://doi.org/10.1023/B:KICA.0000009059.80675.4e

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