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Formation of Nanosized Low-Concentrated Cobalt-Containing Catalytic Dispersions for Three-Phase Fischer–Tropsch Synthesis During the Process of Hydrogen Activation

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Abstract

Topochemical transformations occurring during the reduction of low-concentrated catalytic dispersions used for Fischer–Tropsch synthesis in a three-phase slurry reactor are investigated. As evidenced by dynamic light scattering and transmission electron microscopy, catalyst systems containing nanoparticles with sizes of 91 and 3 nm, respectively, are formed in systems containing cobalt at concentrations of 5 and 1 wt %. After catalyst activation via the reduction of cobalt-containing particles by hydrogen, the size of the dispersed phase is 2–3 nm regardless of the content of cobalt in the suspension. The study of magnetic properties of suspension samples in situ indicates that metallic cobalt is formed during the process of catalyst activation, as confirmed by X-ray powder diffraction analysis.

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ACKNOWLEDGMENTS

This work was supported by Federal Agency for Scientific Organization of Russia within the scope of State Task for the Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences.

The work was performed using the equipment of the Center for Collective Use New Petrochemical Processes, Polymer Composites, and Adhesives.

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Authors and Affiliations

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

    M. V. Kulikova, O. S. Dement’eva, M. I. Ivantsev & P. A. Chernavskii

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  1. M. V. Kulikova
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  2. O. S. Dement’eva
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  3. M. I. Ivantsev
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  4. P. A. Chernavskii
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Correspondence to M. V. Kulikova.

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Translated by T. Soboleva

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Kulikova, M.V., Dement’eva, O.S., Ivantsev, M.I. et al. Formation of Nanosized Low-Concentrated Cobalt-Containing Catalytic Dispersions for Three-Phase Fischer–Tropsch Synthesis During the Process of Hydrogen Activation. Pet. Chem. 58, 1233–1236 (2018). https://doi.org/10.1134/S0965544118140074

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  • DOI: https://doi.org/10.1134/S0965544118140074

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