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Abstract <p>For the first time, the study systematically investigates, the effects of the partial pressures of CO and H<sub>2</sub> on Fischer–Tropsch performance in a slurry bubble column reactor (SBCR) over an iron-based nanodispersion. It is shown that, over the tested temperature range, both decreasing CO partial pressure and increasing H<sub>2</sub> partial pressure enhance CO conversion. At CO/H<sub>2</sub> molar ratios of 1 : 1.5 to 1 : 2, reactor pressures of 1.9–2.2 MPa, and temperatures of 240–300°C, methane and C<sub>2</sub>–C<sub>4</sub> hydrocarbons are selectively produced. On the other hand, at CO/H<sub>2</sub> = 1 : 1, 1.5–2.0 MPa, and 280–300°C, the predominant products were C<sub>5+</sub> hydrocarbons. The CO/H<sub>2</sub> molar ratios of 1 : 1 to 1 : 2, 1.5–2.2 MPa, and 240–260°C are the optimal reaction conditions to maximize the selectivity towards oxygenates. The XRD data for the spent catalysts corroborate the correlations identified during the catalytic test.</p>

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Effects of CO and H2 Partial Pressures on Fischer–Tropsch Performance in a Slurry Reactor over Nanosized Fe-Based Catalysts

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Ya. V. Morozova,
  • S. A. Svidersky,
  • A. V. Borisov,
  • I. S. Levin,
  • M. V. Kulikova

摘要

Abstract

For the first time, the study systematically investigates, the effects of the partial pressures of CO and H2 on Fischer–Tropsch performance in a slurry bubble column reactor (SBCR) over an iron-based nanodispersion. It is shown that, over the tested temperature range, both decreasing CO partial pressure and increasing H2 partial pressure enhance CO conversion. At CO/H2 molar ratios of 1 : 1.5 to 1 : 2, reactor pressures of 1.9–2.2 MPa, and temperatures of 240–300°C, methane and C2–C4 hydrocarbons are selectively produced. On the other hand, at CO/H2 = 1 : 1, 1.5–2.0 MPa, and 280–300°C, the predominant products were C5+ hydrocarbons. The CO/H2 molar ratios of 1 : 1 to 1 : 2, 1.5–2.2 MPa, and 240–260°C are the optimal reaction conditions to maximize the selectivity towards oxygenates. The XRD data for the spent catalysts corroborate the correlations identified during the catalytic test.