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• W4210430040 endingPage "123191" @default.
• W4210430040 startingPage "123191" @default.
• W4210430040 abstract "To study the importance of interface microstructure on reactivity for CO2 hydrogenation, Ni/CeO2, Ni/Ce0.9Sn0.1Ox and Ni/0.1SnO2-0.9CeO2 catalysts were prepared, whose support is pristine CeO2, Sn-doped CeO2-based solid solution, and the mixture of SnO2 and CeO2 in sequence with a Sn/Ce molar ratio of 1:9 in the latter two supports. The intrinsic activity of the catalysts for CO2 hydrogenation followed the order: Ni/CeO2 > Ni/0.1SnO2-0.9CeO2 > Ni/Ce0.9Sn0.1Ox. Ni/CeO2 and Ni/0.1SnO2-0.9CeO2 showed CH4 selectivity, while Ni/Ce0.9Sn0.1Ox CO selectivity. The strong interaction between Sn cations and Ni species in Ni/Ce0.9Sn0.1Ox resulted in the immigration of Sn cations to Ni species to form the Ni-O-Sn-O-Ce interface, distinctly differing from the Ni-O-Ce interface in Ni/CeO2 and the Ni-O-Ce plus Ni-O-Sn interfaces in Ni/0.1SnO2-0.9CeO2. The enrichment of Sn cations as acidic sites on the Ni/Ce0.9Sn0.1Ox surface decreased evidently the chemisorption of CO2 and inhibited the generation of HCO3*, thus inhibiting the formate path for CH4. Conversely, the presence of Sn cations in the interface favored the generation of carbonates, thus promoting CO yield. This work shows the activity and selectivity for CO2 hydrogenation are highly dependent on microstructure of an interface in oxide-supported Ni catalysts." @default.
• W4210430040 created "2022-02-08" @default.
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• W4210430040 date "2022-05-01" @default.
• W4210430040 modified "2023-10-02" @default.
• W4210430040 title "Interface-dependent activity and selectivity for CO2 hydrogenation on Ni/CeO2 and Ni/Ce0.9Sn0.1Ox" @default.
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• W4210430040 doi "https://doi.org/10.1016/j.fuel.2022.123191" @default.
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