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- W4239675211 abstract "The formations of sulfur vacancies over different active sites of Mo-based and W-based active phases are investigated under the traditional hydrodesulfurization (HDS) reaction conditions using DFT calculations. It can be found that under the HDS reaction conditions (600 K, p(H2) =4 MPa and p(H2S)/p(H2) = 0.001), the single sulfur vacancy can be easily formed at the S-edge rather than the M-edge/W-edge. Comparably, with the promotions of Co or Ni atoms occurring at the S-edge of the MoS2/WS2 active phase, the formation of single sulfur vacancy will become more favorable at this site. Moreover, it is interesting that when Ni atoms further replace Mo atoms at the S-edge of NiMoS active phases, the formations of double sulfur vacancies become more favorable, which can expose more accessible Ni sites for the adsorptions of sulfur-containing compounds. And temperature and pressure are two important factors affecting the sulfur vacancy formation." @default.
- W4239675211 created "2022-05-12" @default.
- W4239675211 date "2004-04-01" @default.
- W4239675211 modified "2023-10-14" @default.
- W4239675211 title "Polyoxometallate molecular science" @default.
- W4239675211 doi "https://doi.org/10.1016/s1351-4180(04)00267-3" @default.
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