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The Effect of Carbon Nanofibers on the Hydrocracking of Vacuum Residue in the Presence of Formic Acid

Author

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  • Vladimir V. Chesnokov

    (Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia)

  • Pavel P. Dik

    (Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia)

Abstract

This study was devoted to the processing of vacuum residue to produce lighter oil fractions, such as gasoline and diesel fuel. The hydrocracking and catalytic hydrocracking of vacuum residue in the presence of formic acid (FA) were performed in the temperature range of 250–550 °C. Carbon nanofibers (CNFs) were used as catalytic additives. In contrast to conventional hydrocracking, an important stage in the catalytic hydrocracking of vacuum residue is the decomposition of formic acid. Experimental studies on the effect of CNFs on the decomposition of FA demonstrated that CNFs pre-treated in a NaOH solution (CNF (NaOH)s) had the highest activity and selectivity for the production of H 2 and CO 2 . The maximum yield of liquid products in the catalytic hydrocracking process, equal to 34 wt.%, was observed at 300 °C in the presence of CNF (NaOH)s. The characterization of the fractional compositions of the liquid products showed that the ratios of the fractions changed with an increase in the reaction temperature. The maximum concentrations of the light fractions (gasoline and diesel) in the liquid products of the catalytic hydrocracking of vacuum residue were observed at 300–350 °C in the presence of CNF (NaOH)s.

Suggested Citation

  • Vladimir V. Chesnokov & Pavel P. Dik, 2023. "The Effect of Carbon Nanofibers on the Hydrocracking of Vacuum Residue in the Presence of Formic Acid," Energies, MDPI, vol. 16(18), pages 1-15, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:18:p:6477-:d:1235149
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    References listed on IDEAS

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    1. Vladimir V. Chesnokov & Pavel P. Dik & Aleksandra S. Chichkan, 2020. "Formic Acid as a Hydrogen Donor for Catalytic Transformations of Tar," Energies, MDPI, vol. 13(17), pages 1-12, September.
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