Volume 7 Issue 2
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Article Navigation >  Green Energy&Environment  > 2022  >  7(2): 324-333
Xilong Wang, Chengkun Xiao, Mohnnad H. Alabsi, Peng Zheng, Zhengkai Cao, Jinlin Mei, Yu Shi, Aijun Duan, Daowei Gao, Kuo-Wei Huang, Chunming Xu. Pt-confinement catalyst with dendritic hierarchical pores on excellent sulfur-resistance for hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene. Green Energy&Environment, 2022, 7(2): 324-333. doi: 10.1016/j.gee.2020.10.012
Citation: Xilong Wang, Chengkun Xiao, Mohnnad H. Alabsi, Peng Zheng, Zhengkai Cao, Jinlin Mei, Yu Shi, Aijun Duan, Daowei Gao, Kuo-Wei Huang, Chunming Xu. Pt-confinement catalyst with dendritic hierarchical pores on excellent sulfur-resistance for hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene. Green Energy&Environment, 2022, 7(2): 324-333. doi: 10.1016/j.gee.2020.10.012
shu

Pt-confinement catalyst with dendritic hierarchical pores on excellent sulfur-resistance for hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene

doi: 10.1016/j.gee.2020.10.012

  • a State Key Laboratory of Heavy Oil Processing, China University of Petroleum (Beijing), Beijing, 102249, China;

  • b KAUST Catalysis Center and Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia;

  • c School of Chemistry and Chemical Engineering, University of Jinan, Jinan, 250022, China

Funds:

This research was supported by the National Natural Science Foundation of China (No. 21808079, 21878330 and 21676298), Key Research and Development Program of Shandong Province (No. 2019GSF109115), the National Science and Technology Major Project, the CNPC Key Research Project (2016E-0707), the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award (No. OSR-2019-CPF-4103.2) and the Project of National Key R&D Program of China (2019YFC1907700).

  • Received date 02 July 2020, Accepted date 10 October 2020, RevRecd date 04 August 2020, Publish date 14 October 2020,
    Abstract
  • Metal confinement catalyst MoS2/Pt@TD-6%Ti (TD, TS-1/Dendritic mesoporous silica nanoparticles composite) in dendritic hierarchical pore structures was synthesized and showed excellent sulfur-resistance performance and stabilities in catalytic hydrodesulfurization reactions of probe sulfide molecules. The MoS2/Pt@TD-6%Ti catalyst combines the concepts of Pt-confinement effect and hydrogen spillover of Pt noble metal. The modified micropores of Mo/Pt@TD-6%Ti only allow the migration and dissociation of small H2 molecules (0.289 nm), and effectively keep the sulfur-containing compounds (e.g. H2S, 0.362 nm) outside. Thus, the MoS2/Pt@TD-6%Ti catalyst exhibits higher DBT and 4,6-DMDBT HDS activities because of the synergistic effect of the strong H2 dissociation ability of Pt and desulfurization ability of MoS2 with a lower catalyst cost. This new concept combining H2 dissociation performance of noble metal catalyst with the desulfurization ability of transition metal sulfide MoS2 can protect the noble metal catalyst avoiding deactivation and poison, and finally guarantee the higher activities for DBT and 4,6-DMDBT HDS.

     

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