Abstract
Results of a study of the synthesis of hydrocarbons (HC) from CO and H2 in the presence of a commercial Co–Al2O3/SiO2 catalyst at 6.0 MPa and a reaction gas recycle ratio of 2.2–6.0 for 1000 h have been described. Under these conditions, the catalyst deactivation rate depends on the selectivity for synthetic C35+ long-chain HCs (SLCHCs). An increase in the SLCHC content in the products from 27.6 to 39.8% leads to a threefold increase in the catalyst deactivation rate. With an increase in the recycle ratio from 2.2 to 6.0 at a pressure of 6.0 MPa, the olefin content in the synthesis products increases. An increase in temperature leads to a shift of the selectivity toward HCs with a shorter chain. The viscosity of LCHCs condensed in the pores decreases owing to their dilution with lighter HCs, which contributes to an increase in the number of accessible active sites of the catalyst and facilitates catalyst regeneration.
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07 April 2023
An Erratum to this paper has been published: https://doi.org/10.1134/S0965544123030040
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ACKNOWLEDGMENTS
This work was performed using the equipment of the “Nanotechnology” Shared-Used Center for at the South Russian State Polytechnic University. The authors thank A.T. Kozakov and A.V. Nikol’skii (Research Institute of Physics, Southern Federal University) for assiatance in recording the XPS spectra.
Funding
This work was supported by the Ministry of Education and Science of the Russian Federation under a state task for research and development (application code no. 10.2980.2017/4.6).
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Translated by M. Timoshinina
This article has been retracted. Please see the retraction notice for more detail: https://doi.org/10.1134/S0965544123030040
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Savost’yanov, A.P., Yakovenko, R.E., Narochnyi, G.B. et al. RETRACTED ARTICLE: Deactivation of a Commercial Co–Al2O3/SiO2 Catalyst in Fischer–Tropsch Synthesis under High-Pressure and Gas Recycling Conditions. Pet. Chem. 60, 81–91 (2020). https://doi.org/10.1134/S0965544120010120
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DOI: https://doi.org/10.1134/S0965544120010120