SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2025, Vol. 81 ›› Issue (5): 270-276.DOI: 10.1016/j.cjche.2024.12.025

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Effect of carbon modifications on the performance of hydrogenation catalysts

Zhenhui Lv1,2, Jianan Li1, Tao Yang2, Yibao Li3, Chong Peng1   

  1. 1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
    2. Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116041, China;
    3. Key Laboratory of Organo-Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, China
  • Received:2024-10-14 Revised:2024-12-08 Accepted:2024-12-15 Online:2025-03-19 Published:2025-05-28
  • Contact: Chong Peng,E-mail:pengchong@dlut.edu.cn
  • Supported by:
    This work was supported by grants from the National Natural Science Foundation of China (22122807 and 22378038), Fundamental Research Funds for the Central Universities (DUT23RC(3)044), State Key Laboratory of Heavy Oil Processing, China University of Petroleum (WX20230149), the Double Thousand Plan of Jiangxi Province (jxsq2023102007) and China Postdoctoral Science Foundation (2024M750328).

Effect of carbon modifications on the performance of hydrogenation catalysts

Zhenhui Lv1,2, Jianan Li1, Tao Yang2, Yibao Li3, Chong Peng1   

  1. 1. State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China;
    2. Dalian Research Institute of Petroleum and Petrochemicals, SINOPEC, Dalian 116041, China;
    3. Key Laboratory of Organo-Pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, China
  • 通讯作者: Chong Peng,E-mail:pengchong@dlut.edu.cn
  • 基金资助:
    This work was supported by grants from the National Natural Science Foundation of China (22122807 and 22378038), Fundamental Research Funds for the Central Universities (DUT23RC(3)044), State Key Laboratory of Heavy Oil Processing, China University of Petroleum (WX20230149), the Double Thousand Plan of Jiangxi Province (jxsq2023102007) and China Postdoctoral Science Foundation (2024M750328).

Abstract: In the petroleum industry, the properties of catalysts play a crucial role in the performance of hydroprocessing reactions. Carbon modification can effectively regulate the physicochemical properties of catalysts, but further in-depth research is necessary. In this study, ethylene glycol was used as the carbon source to investigate the impact of varying carbon amounts on the performance of the Mo-Ni/Al2O3 hydrogenation catalyst. The results showed that both the pore structure and surface hydroxyl groups of catalysts can be adjusted after carbon modification. As the carbon content increased, the surface acidity of catalysts gradually decreased, and the interaction between carrier and active metal gradually weakened, leading to more octahedral coordination in form of polynuclear polymolybdic acid. The dispersion and sulfidation degree of Mo species improved, ultimately resulting in more hydrogenation active phases. Consequently, the catalyst exhibited enhanced hydrodesulfurization (HDS) and hydrodenitrification (HDN) activities.

Key words: Hydrogenation, Catalyst, Reactivity, Petroleum, Fixed-bed

摘要: In the petroleum industry, the properties of catalysts play a crucial role in the performance of hydroprocessing reactions. Carbon modification can effectively regulate the physicochemical properties of catalysts, but further in-depth research is necessary. In this study, ethylene glycol was used as the carbon source to investigate the impact of varying carbon amounts on the performance of the Mo-Ni/Al2O3 hydrogenation catalyst. The results showed that both the pore structure and surface hydroxyl groups of catalysts can be adjusted after carbon modification. As the carbon content increased, the surface acidity of catalysts gradually decreased, and the interaction between carrier and active metal gradually weakened, leading to more octahedral coordination in form of polynuclear polymolybdic acid. The dispersion and sulfidation degree of Mo species improved, ultimately resulting in more hydrogenation active phases. Consequently, the catalyst exhibited enhanced hydrodesulfurization (HDS) and hydrodenitrification (HDN) activities.

关键词: Hydrogenation, Catalyst, Reactivity, Petroleum, Fixed-bed