化工学报 ›› 2024, Vol. 75 ›› Issue (5): 1735-1749.DOI: 10.11949/0438-1157.20231191

• 综述与专论 • 上一篇    下一篇

原子尺度钼系加氢脱硫催化剂的研究进展与展望

丁禹1(), 杨昌泽1, 李军2, 孙会东2, 商辉1()   

  1. 1.中国石油大学(北京)化学工程与环境学院,北京 102249
    2.中国石油规划总院,北京 100083
  • 收稿日期:2023-11-17 修回日期:2024-03-20 出版日期:2024-05-25 发布日期:2024-06-25
  • 通讯作者: 商辉
  • 作者简介:丁禹(1994—),男,博士研究生,dingyucup@outlook.com

Research progress and prospects of atomic-scale molybdenum-based hydrodesulfurization catalysts

Yu DING1(), Changze YANG1, Jun LI2, Huidong SUN2, Hui SHANG1()   

  1. 1.College of Chemical Engineering and Environmental Engineering, China University of Petroleum, Beijing 102249, China
    2.PetroChina Planning & Engineering Institute, Beijing 100083, China
  • Received:2023-11-17 Revised:2024-03-20 Online:2024-05-25 Published:2024-06-25
  • Contact: Hui SHANG

摘要:

深入探讨了原子尺度钼系加氢脱硫催化剂在加氢脱硫反应中的研究进展。重点关注了MoS2和Co(Ni)MoS微观结构对催化性能的影响,以及活性氢原子生成、硫化条件对催化剂结构和活性的影响。探讨了不同类型MoS2和Co(Ni)MoS边缘结构与加氢脱硫性能的构效关系,强调了MoS2边缘的硫-氢基团在反应中的关键作用。此外,详细讨论了噻吩分子在催化剂表面的吸附方式,加深了对噻吩的加氢脱硫机理的了解。最后,强调了载体Al2O3表面氢溢流效应的重要性,通过调控氧化铝载体表面的羟基基团与钼酸根的相互作用,提高了催化活性。总体而言,这些研究结果突显了微观结构在催化活性调控中的关键作用,为提高工业加氢脱硫反应速率提供了有力的支持。

关键词: 加氢脱硫, 催化剂, 催化剂载体, 密度泛函理论, 二硫化钼

Abstract:

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.

Key words: hydrodesulfurization, catalyst, catalyst support, density functional theory, molybdenum disulfide

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