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<p>Herein, green synthesis approach for boehmite-derived Ni-W/Al<sub>2</sub>O<sub>3</sub> catalysts, employing biopolymer-based pore-making agents to enhance kerosene hydrodesulfurization (HDS) is reported. This study aims to investigate how the type and loading of biopolymer pore-making agents affect the porosity, surface area, metal dispersion, and catalytic performance of Ni–W/Al<sub>2</sub>O<sub>3</sub> catalysts for HDS of kerosene. The boehmite precursor was converted to γ-Al<sub>2</sub>O<sub>3</sub> under controlled conditions, and Ni-W metals were subsequently deposited onto the porous support via incipient wetness impregnation method. Various biopolymers including starch (ST), cellulose (CE), chitosan (CH), and biochar (BC) were tested as pore-making agents, resulting in different pore structures and surface properties. BET, FE-SEM, EDS-Mapping, TEM, TGA, XRD, and side crushing strength (SCS) analyses were performed to evaluate the properties of the synthesized samples. Among the evaluated agents, the 15 wt% CH demonstrated the highest pore volume, measuring 1.05 cm<sup>3</sup>.g<sup>-1</sup> and kerosene HDS efficiency of 98.03%. Additionally, the Al<sub>2</sub>O<sub>3</sub> synthesized using CE, showed a superior SCS of 41&#xa0;N.mm<sup>-1</sup> and achieved a sulfur removal efficiency of 96.78%. Additionally, gas chromatographic (GC) analysis of the gaseous product revealed minimal cracking reactions.</p>

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Green synthesis of boehmite-derived porous Ni-W/Al2O3 catalysts using biopolymer-based pore-making agents for enhanced kerosene hydrodesulfurization

  • 期刊论文

  • 发表日期：

    2025年10月22日

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  • Alisher Abduvokhidov,
  • Ali B. M. Ali,
  • Abdul Amir H. Kadhum,
  • Mukhtorjon Karimov,
  • Otabek Mukhitdinov,
  • Mumtaj Shah,
  • Mohammed K. Al. Mesfer

摘要

Herein, green synthesis approach for boehmite-derived Ni-W/Al2O3 catalysts, employing biopolymer-based pore-making agents to enhance kerosene hydrodesulfurization (HDS) is reported. This study aims to investigate how the type and loading of biopolymer pore-making agents affect the porosity, surface area, metal dispersion, and catalytic performance of Ni–W/Al2O3 catalysts for HDS of kerosene. The boehmite precursor was converted to γ-Al2O3 under controlled conditions, and Ni-W metals were subsequently deposited onto the porous support via incipient wetness impregnation method. Various biopolymers including starch (ST), cellulose (CE), chitosan (CH), and biochar (BC) were tested as pore-making agents, resulting in different pore structures and surface properties. BET, FE-SEM, EDS-Mapping, TEM, TGA, XRD, and side crushing strength (SCS) analyses were performed to evaluate the properties of the synthesized samples. Among the evaluated agents, the 15 wt% CH demonstrated the highest pore volume, measuring 1.05 cm3.g-1 and kerosene HDS efficiency of 98.03%. Additionally, the Al2O3 synthesized using CE, showed a superior SCS of 41 N.mm-1 and achieved a sulfur removal efficiency of 96.78%. Additionally, gas chromatographic (GC) analysis of the gaseous product revealed minimal cracking reactions.