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Nonoxidative conversion of methane and n-pentane over a platinum/alumina catalyst

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Abstract

Methane adsorption on the Pt–H/Al2O3 and Pt/Al2O3 catalysts begins at Т = 475°C and is accompanied by the appearance of hydrogen in the reaction medium. At a higher temperature is raised to 550°C, the amount of adsorbed hydrogen increases to 1.1 and 0.8 mol/(mol Pt), respectively. According to the calculated degree of methane dehydrogenation on platinum sites at Т = 550°C, the Н/C ratio is 1.3 (at/at) for the Pt–H/Al2O3 catalyst and 1.5 (at/at) for the Pt/Al2O3 catalyst. The introduction of n-pentane into the reaction medium increases the yield of aromatic hydrocarbons (benzene and toluene) by a factor of 8.8 over the arene yield observed in individual n-pentane conversion. A mass spectrometric analysis of the arenes obtained with the Pt/Al2O3 catalyst has demonstrated that 37.5% of the adsorbed methane is involved in the methane–n-pentane coaromatization yielding benzene and toluene.

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Authors and Affiliations

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

    D. V. Golinskii, N. V. Vinichenko, V. V. Pashkov, I. E. Udras, O. V. Krol’, V. P. Talzi & A. S. Belyi

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

    N. V. Vinichenko & A. S. Belyi

Authors
  1. D. V. Golinskii
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  2. N. V. Vinichenko
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  3. V. V. Pashkov
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  4. I. E. Udras
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  5. O. V. Krol’
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  6. V. P. Talzi
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  7. A. S. Belyi
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Corresponding author

Correspondence to D. V. Golinskii.

Additional information

Original Russian Text © D.V. Golinskii, N.V. Vinichenko, V.V. Pashkov, I.E. Udras, O.V. Krol’, V.P. Talzi, A.S. Belyi, 2016, published in Kinetika i Kataliz, 2016, Vol. 57, No. 4, pp. 508–515.

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Golinskii, D.V., Vinichenko, N.V., Pashkov, V.V. et al. Nonoxidative conversion of methane and n-pentane over a platinum/alumina catalyst. Kinet Catal 57, 504–510 (2016). https://doi.org/10.1134/S0023158416040042

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  • DOI: https://doi.org/10.1134/S0023158416040042

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