TY - JOUR
T1 - The Influence of Pore Structure and Acidity on the Hydrodesulfurization of Dibenzothiophene over NiMo-Supported Catalysts
AU - Shi, Yu
AU - Wang, Gang
AU - Mei, Jinlin
AU - Xiao, Chengkun
AU - Hu, Di
AU - Wang, Aocheng
AU - Song, Yidong
AU - Ni, Yan
AU - Jiang, Guiyuan
AU - Duan, Aijun
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This research was supported by the National Natural Science Foundation of China (no. 21878330, 21676298), 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-CPF4103.2, and the Project of National Key R&D Program of China (no. 2019YFC1907700).
This publication acknowledges KAUST support, but has no KAUST affiliated authors.
PY - 2020/6/18
Y1 - 2020/6/18
N2 - A series of mesoporous materials of SBA-16 were in situ incorporated into ZSM-5 crystallites via a two-step self-assemble method, and hydrodesulfurization (HDS) catalysts were prepared on the corresponding ZSM-5/SBA-16 (ZS) composites. The characterization results indicated that ZSM-5 nanoseeds were fabricated into the silica framework of the ZS composites, and the three-dimensional Im3m cubic structure of SBA-16 was retained simultaneously. In addition, the ZS series materials possessed open pores and large surfaces, which would facilitate the diffusion of reactants in the mesoporous channels. Moreover, the introduction of ZSM-5 seeds into composites could enhance the acidities of supports. As a result, the NiMo/ZS series catalysts exhibited high activities for DBT HDS processes. The NiMo/ZS-160 catalyst exhibited the highest catalytic efficiency (96.5%), which was apparently attributed to the synergistic contributions of the physicochemical properties of ZS supports and the dispersion states of active metals. Correspondingly, DBT HDS reactions over the NiMo/ZS series catalysts mainly proceeded via a hydrogenation desulfurization route that benefitted from the enhanced acidities especially the total Brønsted acid.
AB - A series of mesoporous materials of SBA-16 were in situ incorporated into ZSM-5 crystallites via a two-step self-assemble method, and hydrodesulfurization (HDS) catalysts were prepared on the corresponding ZSM-5/SBA-16 (ZS) composites. The characterization results indicated that ZSM-5 nanoseeds were fabricated into the silica framework of the ZS composites, and the three-dimensional Im3m cubic structure of SBA-16 was retained simultaneously. In addition, the ZS series materials possessed open pores and large surfaces, which would facilitate the diffusion of reactants in the mesoporous channels. Moreover, the introduction of ZSM-5 seeds into composites could enhance the acidities of supports. As a result, the NiMo/ZS series catalysts exhibited high activities for DBT HDS processes. The NiMo/ZS-160 catalyst exhibited the highest catalytic efficiency (96.5%), which was apparently attributed to the synergistic contributions of the physicochemical properties of ZS supports and the dispersion states of active metals. Correspondingly, DBT HDS reactions over the NiMo/ZS series catalysts mainly proceeded via a hydrogenation desulfurization route that benefitted from the enhanced acidities especially the total Brønsted acid.
UR - http://hdl.handle.net/10754/663878
UR - https://pubs.acs.org/doi/10.1021/acsomega.0c01783
U2 - 10.1021/acsomega.0c01783
DO - 10.1021/acsomega.0c01783
M3 - Article
C2 - 32637833
SN - 2470-1343
JO - ACS Omega
JF - ACS Omega
ER -