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Oil-soluble N-doped MoS2 as a catalyst for slurry-phase hydrotreating of waste oil

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Listed:
  • Ding, Cheng
  • Luo, Hui
  • Yang, Jiahao
  • Sun, Baobao
  • Deng, Wenan
  • Li, Chuan
  • Du, Feng
  • Li, Shufeng

Abstract

Oil-soluble N-doped MoS2 (N-MoS2) was prepared through sulfurization process of oleic acid diethanolamide molybdate (ODEA-Mo) as a Mo precursor for slurry-phase hydrotreating of palm oil mill effluent (POME) to produce bio-hydrogenated diesel (BHD). The introduction of nitrogen dopants disrupts the coordination saturation environment of the MoS2 inert basal plane and generates more sulfur vacancies, and the optimal addition ratio of melamine and Mo was experimentally determined to be 1:1 (mass ratio). Positive correlation between temperature and degree of sulfurization (the proportion of Mo4+ in the Mo metal), and N-MoS2 exhibited the highest concentration of sulfur vacancies and a high degree of sulfurization of 80.29 % at 420 °C, with an overall particle size distribution of 40–140 nm. The hydrotreating temperature of 380 °C, H2 pressure of 6 MPa and residence time of 1 h were chosen to add N-MoS2 containing 1000 μg g−1, that obtained the highest BHD yield of 83.22 % and the optimal TOFMo of 0.072s−1.

Suggested Citation

  • Ding, Cheng & Luo, Hui & Yang, Jiahao & Sun, Baobao & Deng, Wenan & Li, Chuan & Du, Feng & Li, Shufeng, 2025. "Oil-soluble N-doped MoS2 as a catalyst for slurry-phase hydrotreating of waste oil," Renewable Energy, Elsevier, vol. 243(C).
    • Handle: RePEc:eee:renene:v:243:y:2025:i:c:s096014812500165x
    DOI: 10.1016/j.renene.2025.122503
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    References listed on IDEAS

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    1. Luo, Hui & Yang, Huimin & Deng, Wenan & Li, Chuan & Du, Feng & Li, Shufeng, 2023. "Slurry-phase hydrotreating of waste oil to bio-hydrogenated diesel using in situ oil-soluble MoS2 nanoparticles," Renewable Energy, Elsevier, vol. 219(P2).
    2. Linfeng Fei & Shuijin Lei & Wei-Bing Zhang & Wei Lu & Ziyuan Lin & Chi Hang Lam & Yang Chai & Yu Wang, 2016. "Direct TEM observations of growth mechanisms of two-dimensional MoS2 flakes," Nature Communications, Nature, vol. 7(1), pages 1-7, November.
    3. Pan, Jiaqi & Liu, Yanyan & Ou, Wei & Li, Shi & Li, Hongli & Wang, Jingjing & Song, Changsheng & Zheng, Yingying & Li, Chaorong, 2020. "The photocatalytic hydrogen evolution enhancement of the MoS2 lamellas modified g-C3N4/SrTiO3 core-shell heterojunction," Renewable Energy, Elsevier, vol. 161(C), pages 340-349.
    4. Huang, Yuming & Zhou, Wei & Xie, Liang & Li, Jiayi & He, Yong & Chen, Shuai & Meng, Xiaoxiao & Gao, Jihui & Qin, Yukun, 2022. "Edge and defect sites in porous activated coke enable highly efficient carbon-assisted water electrolysis for energy-saving hydrogen production," Renewable Energy, Elsevier, vol. 195(C), pages 283-292.
    5. Du, Yuchan & Wang, Fei & Xia, Xueying & Zhu, Hao & Zhang, Zeng & You, Chaoqun & Jiang, Xiaoxiang & Jiang, Jianchun & Li, Changzhu, 2022. "MOF-derived Co nanoparticle on nitrogen-rich carbon for fatty acid hydrotreatment into green diesel," Renewable Energy, Elsevier, vol. 198(C), pages 246-253.
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