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<p>The synthesis and characterization of novel NiMo catalysts for hydrodesulfurization of petroleum represent a significant advancement in catalytic technology, addressing the need for efficient removal of sulfur from fossil fuels. This study explores the development of titania and alumina supports modified with graphene oxide (GO, 2 wt%) to improve the catalytic behavior of NiMo catalysts in deep hydrodesulfurization. The GO-modified supports were synthesized via a hydrothermal method. The NiMo catalysts (12 wt% MoO<sub>3</sub> and 3 wt% NiO) were prepared by incipient wetness coimpregnation. The supports and catalysts were characterized by powder X-ray diffraction, N<sub>2</sub> physisorption, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDS), and high-resolution transmission electron microscopy (HRTEM). The results indicate that the GO-modified supports not only provide higher surface areas to the NiMo catalysts, but also considerably improve their catalytic efficiency in the hydrodesulfurization of dibenzothiophene, probably by promoting hydrogen spillover during the reaction.</p> Graphical abstract <p></p>

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Upgrading titania and alumina supports for NiMo hydrodesulfurization catalysts by the incorporation of 2D graphene oxide

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年2月10日

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  • Rodrigo Iván Molina-Pérez,
  • Jessica Cruces-Lira,
  • Tatiana E. Klimova

摘要

The synthesis and characterization of novel NiMo catalysts for hydrodesulfurization of petroleum represent a significant advancement in catalytic technology, addressing the need for efficient removal of sulfur from fossil fuels. This study explores the development of titania and alumina supports modified with graphene oxide (GO, 2 wt%) to improve the catalytic behavior of NiMo catalysts in deep hydrodesulfurization. The GO-modified supports were synthesized via a hydrothermal method. The NiMo catalysts (12 wt% MoO3 and 3 wt% NiO) were prepared by incipient wetness coimpregnation. The supports and catalysts were characterized by powder X-ray diffraction, N2 physisorption, scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM–EDS), and high-resolution transmission electron microscopy (HRTEM). The results indicate that the GO-modified supports not only provide higher surface areas to the NiMo catalysts, but also considerably improve their catalytic efficiency in the hydrodesulfurization of dibenzothiophene, probably by promoting hydrogen spillover during the reaction.

Graphical abstract