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- W3216783395 abstract "Atomic-level insight into the unique catalytic capability of single-atom catalysts that distinguished from nanometer-sized counterparts is highly desirable for catalyst design and catalysis research. By synthesizing single Pd atoms supported on TiO 2 as a catalyst, here we demonstrate a steric hindrance effect of single atoms induced by the unique isolation of single-atom active sites to achieve a remarkable enhancement on catalytic performance in the synthesis of dimethyl carbonate. Experimental results and density functional theory calculations reveal that such steric hindrance effect of single atoms favors the yield of the desired product dimethyl carbonate against further reacting with intermediates to form byproduct, because no extra Pd species around single Pd atoms provide active sites to further adsorb and activate substrates directly. The discovery of such steric hindrance effect is a valuable supplement to single-atom catalysis, and may promote single-atom catalysts to be widely applied in selective catalytic reactions. • Atom spatial confinement strategy is developed to synthesize SA-Pd1/TiO2 catalyst. • The SA-Pd1/TiO2 shows good performance and stability for synthesis of DMC. • Steric hindrance effect induces by isolation of Pd single atoms enhaces performance." @default.
- W3216783395 created "2021-12-06" @default.
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- W3216783395 date "2022-05-01" @default.
- W3216783395 modified "2023-10-16" @default.
- W3216783395 title "Atomic-level insights into the steric hindrance effect of single-atom Pd catalyst to boost the synthesis of dimethyl carbonate" @default.
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- W3216783395 doi "https://doi.org/10.1016/j.apcatb.2021.120922" @default.
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