Research progress and prospects of atomic-scale molybdenum-based hydrodesulfurization catalysts
The research progress of atomic-scale molybdenum-based hydrodesulfurization catalysts in hydrodesulfurization reactions was discussed in depth.Emphasis is placed on the influence of the microstructures of MoS2 and Co(Ni)MoS on catalytic performance,as well as the effects of active hydrogen atom generation and sulfurization conditions on catalyst morphology and activity.The correlation between different types of MoS2 and Co(Ni)MoS edge morphology and hydrodesulfurization performance was discussed,with particular emphasis on the crucial role of S—H groups at the edges of MoS2 during the reaction.Furthermore,a detailed examination of the adsorption mode of thiophene molecules on the catalyst sites provided valuable clues to the hydrodesulfurization mechanism of thiophene.Finally,the significance of the surface hydrogen spillover effect on the Al2O3 support was underscored.By controlling the interaction between hydroxyl groups on the alumina support's surface and molybdate ions,the catalytic activity is enhanced.In conclusion,the research findings highlight the pivotal role of microstructures in catalytic activity,offering promising support for enhancing the industrial hydrodesulfurization reaction rate while contributing significantly to environmental protection.
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