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Influence of Catalytic Poisons on the Selectivity of a Cobalt Catalyst for the Fischer–Tropsch Synthesis in Terms of the Theory of Astoichiometric Components of Catalytic Reactions

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Abstract

The effect of treatment of a freshly reduced cobalt catalyst with oxygen and ammonia on its properties in the Fischer–Tropsch synthesis was studied. It was shown that treatment with small amounts of catalytic poisons helped to increase the selectivity of the catalyst with respect to the formation of target products, linear C5+ hydrocarbons. The observed effect can be explained by partial blocking of the sites of direct CO hydrogenation to methane and modification of Lewis acid sites. The data obtained were consistent with the concept of the two-center surface model of Co catalysts for the Fischer–Tropsch synthesis and the theory of astoichiometric components of catalytic reactions.

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Funding

This work was carried out within the framework of a state contract at the Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences.

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Authors and Affiliations

  1. Topchiev Institute of Petrochemical Synthesis (TIPS), Russian Academy of Sciences, 119991, Moscow, Russia

    A. Yu. Krylova, S. A. Sviderskii & M. V. Kulikova

  2. Gubkin State University of Oil and Gas, 119991, Moscow, Russia

    A. L. Lapidus

Authors
  1. A. Yu. Krylova
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  2. S. A. Sviderskii
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  3. M. V. Kulikova
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  4. A. L. Lapidus
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Correspondence to A. Yu. Krylova, S. A. Sviderskii, M. V. Kulikova or A. L. Lapidus.

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The authors declare that they have no conflicts of interest.

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Translated by V. Makhlyarchuk

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Krylova, A.Y., Sviderskii, S.A., Kulikova, M.V. et al. Influence of Catalytic Poisons on the Selectivity of a Cobalt Catalyst for the Fischer–Tropsch Synthesis in Terms of the Theory of Astoichiometric Components of Catalytic Reactions. Solid Fuel Chem. 57, 381–393 (2023). https://doi.org/10.3103/S0361521923060022

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