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Abstract <p>Combustion of fossil fuels releases harmful pollutants, particularly sulfur-containing compounds such as alkyl mercaptans, sulfides, disulfides, and thiophenes present in diesel fuel. These pollutants pose significant environmental, health, and economic challenges. Hydrodesulfurization (HDS) using heterogeneous catalysts is a widely employed refinery technique to remove sulfur from diesel. In this study, a novel RN/γ-Al<sub>2</sub>O<sub>3</sub>@CNTs catalyst was synthesized by incorporating 15% Raney nickel (RN), resulting in a high surface area of approximately 129 m<sup>2</sup>/g. The catalyst’s HDS performance was evaluated using diesel fuel containing 0.98% sulfur. For comparison, a RN/γ-Al<sub>2</sub>O<sub>3</sub> catalyst was also prepared. The RN/γ-Al<sub>2</sub>O<sub>3</sub>@CNTs catalyst achieved a superior sulfur removal efficiency of 92% in batch HDS tests, significantly outperforming the 80% efficiency of RN/γ-Al<sub>2</sub>O<sub>3</sub>. These results highlight the potential of RN/γ-Al<sub>2</sub>O<sub>3</sub>@CNTs as an effective heterogeneous catalyst for improved diesel desulfurization, contributing to reduced environmental pollution.</p>

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Enhanced Hydrodesulfurization of Diesel Using Novel RN/γ-Al2O3@CNTs Catalyst

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • Asfar Ali,
  • Saghir Hussain,
  • Waqar Ahmad,
  • Khalid Mahmood,
  • Artem S. Belousov,
  • Hina Ghafoor,
  • Murid Hussain,
  • Iqrash Shafiq

摘要

Abstract

Combustion of fossil fuels releases harmful pollutants, particularly sulfur-containing compounds such as alkyl mercaptans, sulfides, disulfides, and thiophenes present in diesel fuel. These pollutants pose significant environmental, health, and economic challenges. Hydrodesulfurization (HDS) using heterogeneous catalysts is a widely employed refinery technique to remove sulfur from diesel. In this study, a novel RN/γ-Al2O3@CNTs catalyst was synthesized by incorporating 15% Raney nickel (RN), resulting in a high surface area of approximately 129 m2/g. The catalyst’s HDS performance was evaluated using diesel fuel containing 0.98% sulfur. For comparison, a RN/γ-Al2O3 catalyst was also prepared. The RN/γ-Al2O3@CNTs catalyst achieved a superior sulfur removal efficiency of 92% in batch HDS tests, significantly outperforming the 80% efficiency of RN/γ-Al2O3. These results highlight the potential of RN/γ-Al2O3@CNTs as an effective heterogeneous catalyst for improved diesel desulfurization, contributing to reduced environmental pollution.