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- W4387326719 abstract "A carbon matrix-supported Ni catalyst with surface/subsurface S species is prepared using a sacrificial metal-organic framework synthesis strategy. The resulting highly dispersed Ni-S/C catalyst contains surface discontinuous and electron-deficient Niδ+ sites modified by p-block S elements. This catalyst proved to be extremely active and selective for alkyne hydrogenation. Specifically, high intrinsic activity (TOF = 0.0351 s-1) and superior selectivity (>90%) at complete conversion were achieved, whereas an analogous S-free sample prepared by the same synthetic route performed poorly. That is, the incorporation of S in Ni particles and the carbon matrix exerts a remarkable positive effect on catalytic behavior for alkyne hydrogenation, breaking the activity-selectivity trade-off. Through comprehensive experimental studies, enhanced performance of Ni-S/C was ascribed to the presence of discontinuous Ni ensembles, which promote desorption of weakly π-bonded ethylene and an optimized electronic structure modified via obvious p-d orbital hybridization." @default.
- W4387326719 created "2023-10-05" @default.
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- W4387326719 date "2023-10-04" @default.
- W4387326719 modified "2023-10-14" @default.
- W4387326719 title "Metal–Organic Framework-Derived Ni–S/C Catalysts for Selective Alkyne Hydrogenation" @default.
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- W4387326719 doi "https://doi.org/10.1021/acsami.3c09531" @default.
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