Surface curvature-confined strategy to ultrasmall nickel-molybdenum sulfide nanoflakes for highly efficient deep hydrodesulfurization

Review on Hydrodesulfurization over Zeolite-Based Catalysts

“…Especially, a dramatic decrease in the performance of NiMoS/ZSM-5-20k is observed during the progress of reaction time. Very interestingly, the higher DDS selectivity (Figure d) is accomplished by NiMoS/ZSM-5-100 due to the richness of corner sites that selectively promote the DDS route . Similar to the size of zeolites, the morphology of zeolites could influence the HDS performance of zeolite-based catalysts.…”

“…Reaction conditions: temperature (360 °C), pressure (4 MPa), H 2 /oil (600 v/v). Reproduced with permission from ref . Copyright 2020 Springer Nature.…”

“…The nanosized zeolites are more advantageous than the microsized zeolites as they provide the higher surface area for the better dispersion of active metal components and the short diffusion length to increase the HDS performance with the inhibited undesirable cracking reactions. ,− Kang et al have utilized the three different ZSM-5 zeolites varying in size such as 100 nm (ZSM-100), 200 nm (ZSM-200), and 20 μm (ZSM-20k) for accomplishing the surface curvature confined synthesis that yields the MoS 2 particles with lower stacking numbers and lower slab length during the synthesis of NiMoS/ZSM-5 catalysts. The small size zeolite (ZSM-5-100) induces the unique size confined effect that leads to the formation of uniform MoS 2 particles with lower stacking numbers and lower slab length.…”

Ni-promoted MoS2 in hollow zeolite nanoreactors: enhanced catalytic activity and stability for deep hydrodesulfurization

“…[19][20][21] More recently, we reported a "surface curvature-conned synthesis" strategy to conne the growth of 2D NiMoS X by introducing greater strain with larger surface curvature of the supports. 22 The assynthesized ultrasmall NiMoS X nanoakes exhibit highly efficient deep HDS performance, with a k HDS value of DBT of 14.05 Â 10 À7 mol g À1 s À1 . These ndings indicate that reasonable construction of the surface structure of supports may facilitate the design of Mo-based composites with enhanced HDS properties.…”

Mesoporous Gamma‐Alumina‐Supported Mo Catalysts: Effect of Calcination Temperature

“…[7,8] Molybdenumbased sulfides are regarded as one of the effective and commonly applied HDS catalysts attributing to their unique sulfur-resistances. [9,10] In addition to the active components, the catalyst supports as the dispersant and the supporting framework of the active components also play a role in the catalytic performance. In general, the catalytic performance of unsupported catalysts is usually lower than that of supported catalysts due to their poor dispersion and low Mo availability in catalytic reactions.…”