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The role of sulfur in modification of active sites of reforming catalysts

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Abstract

The features of the interaction of hydrogen sulfide with the surface of supports (alumina and silica) and catalysts (Pt/SiO2, Pt/Al2O3, Re/Al2O3, and Pt–Re/Al2O3) have been studied. It has been found that the adsorption of sulfur on the supports is completely reversible. The amount of irreversibly adsorbed sulfur (Sirrev) and Sirrev/metal ratios in the catalysts after treatment in a hydrogen atmosphere at 500°C have been determined. Sulfurization reduces the dispersion of platinum to 5% and increases the amount of ionic platinum on the catalyst surface. Regarding the dehydrocyclization reaction of n-heptane, the optimal amount of sulfur required for sulfurization of the catalyst with the composition 0.25% Pt 0.3% Re/γ-Al2O3 (0.3% Zr) is 0.072 wt %.

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Authors and Affiliations

  1. Institute of Hydrocarbons Processing, Russian Academy of Sciences, Siberian Branch, Omsk, 644040, Russia

    V. Yu. Tregubenko, A. G. Proskura & A. S. Belyi

  2. Omsk State Technical University, Omsk, 644050, Russia

    V. Yu. Tregubenko & A. S. Belyi

Authors
  1. V. Yu. Tregubenko
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  2. A. G. Proskura
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  3. A. S. Belyi
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Corresponding author

Correspondence to V. Yu. Tregubenko.

Additional information

Original Russian Text © V.Yu. Tregubenko, A.G. Proskura, A.S. Belyi, 2017, published in Neftekhimiya, 2017, Vol. 57, No. 1, pp. 109–116.

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Tregubenko, V.Y., Proskura, A.G. & Belyi, A.S. The role of sulfur in modification of active sites of reforming catalysts. Pet. Chem. 57, 106–113 (2017). https://doi.org/10.1134/S0965544116090206

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  • DOI: https://doi.org/10.1134/S0965544116090206

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