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<p>This study investigates the removal of dibenzothiophene (DBT) as a sulfur source from liquid phases through oxidative desulfurization (ODS) using metal nanocatalysts. Based on prior research, a molybdenum-tungsten catalyst supported on carbon was selected for this purpose. Operational parameters, including the catalyst’s active phase, reaction temperature, and sulfur concentration, were optimized. Catalysts with active phase concentrations of 5%, 8%, 10%, and 15% were synthesized and characterized using FTIR, XRD, SEM, and BET analyses to evaluate their structure and morphology. The desulfurization experiments were conducted in a batch reactor under varying conditions: temperatures of 297&#xa0;K and 333&#xa0;K and sulfur concentrations of 380 ppm and 800 ppm. Results demonstrated that the catalyst with a 5% active phase exhibited excellent dispersion of the active phase on the support and achieved up to 90% sulfur removal at 333&#xa0;K and 380 ppm sulfur concentration. Consequently, the 5% active phase catalyst was identified as the most efficient for sulfur removal under these conditions.</p>

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Oxidative Desulfurization Study of Heavy Naphtha Using A Novel Hybrid Nano-Catalyst

  • 期刊论文

  • 发表日期：

    2025年6月11日

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  • Neda Mohammadi Nejad,
  • Seyyed Salar Meshkat,
  • Ali M. Rashidi

摘要

This study investigates the removal of dibenzothiophene (DBT) as a sulfur source from liquid phases through oxidative desulfurization (ODS) using metal nanocatalysts. Based on prior research, a molybdenum-tungsten catalyst supported on carbon was selected for this purpose. Operational parameters, including the catalyst’s active phase, reaction temperature, and sulfur concentration, were optimized. Catalysts with active phase concentrations of 5%, 8%, 10%, and 15% were synthesized and characterized using FTIR, XRD, SEM, and BET analyses to evaluate their structure and morphology. The desulfurization experiments were conducted in a batch reactor under varying conditions: temperatures of 297 K and 333 K and sulfur concentrations of 380 ppm and 800 ppm. Results demonstrated that the catalyst with a 5% active phase exhibited excellent dispersion of the active phase on the support and achieved up to 90% sulfur removal at 333 K and 380 ppm sulfur concentration. Consequently, the 5% active phase catalyst was identified as the most efficient for sulfur removal under these conditions.