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Dehydration of isobutane in fixed bed on the stable to carbon deposition chromia-alumina catalysts

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Abstract

Study of chromia-alumina catalysts obtained from products of a thermochemical activation of aluminum trihydroxide for fixed-bed dehydrogenation of light paraffin hydrocarbons demonstrated that an increase in activity is observed in dehydrogenation of isobutane at a temperature of 590°C during the first 30 min of the catalytic process and then the activity slightly decreases. It was shown that the amount of carbon-deposition products on the surface of the synthesized catalysts after 120 min of isobutene dehydrogenation is 1–2 wt %. One of reasons for the high stability of chromia-alumina catalysts against carbon deposition is their porous structure. The use of the proposed catalysts in industry can improve the efficiency of the paraffin dehydrogenation processes by increasing the time of the reaction, while regeneration time is reduced.

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Authors and Affiliations

  1. National Research Tomsk State University, ul. Lenina 36, Tomsk, 634050, Russia

    T. A. Bugrova & G. V. Mamontov

Authors
  1. T. A. Bugrova
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  2. G. V. Mamontov
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Correspondence to G. V. Mamontov.

Additional information

Original Russian Text © T.A. Bugrova, G.V. Mamontov, 2016, published in Zhurnal Prikladnoi Khimii, 2016, Vol. 89, No. 11, pp. 1422−1427.

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Bugrova, T.A., Mamontov, G.V. Dehydration of isobutane in fixed bed on the stable to carbon deposition chromia-alumina catalysts. Russ J Appl Chem 89, 1791–1796 (2016). https://doi.org/10.1134/S1070427216110094

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  • DOI: https://doi.org/10.1134/S1070427216110094

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