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- W3168754313 abstract "This study aims to clarify the effect of Ni addition on the enhancement of the NO reduction activity of Cu/Al2O3, which possesses high thermal durability, and to elucidate the associated structure–catalysis relationship. Thermal aging of Ni and Cu supported on γ-Al2O3 at a high temperature (900 °C) induced the formation of a pseudo-spinel (NiCu)Al2O4 solid solution on the γ-Al2O3 surface, which was observed using X-ray diffraction and high-angle annular dark-field scanning transmission electron microscopy techniques. Owing to the co-presence of Ni, the preferential occupation of octahedral sites by Ni increased the number of tetrahedrally coordinated Cu2+ ions, which played a key role in the reduction of NO in a stoichiometric NO–CO–C3H6–O2 reaction. XPS analysis revealed that Cu active sites with electron-rich states were formed in pseudo-spinel (NiCu)Al2O4 owing to electron donation from Ni to Cu, which promoted NO adsorption on Cu+ and accelerated NO reduction. The tetrahedrally coordinated Cu formed on the pseudo-spinel oxide was structurally robust, and its local structure remained unchanged even after the redox cycle occurred at a high temperature; this indicated that the formation of pseudo-spinel (NiCu)Al2O4 was effective for the enhancement of NO reduction activity and thermal durability." @default.
- W3168754313 created "2021-06-22" @default.
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- W3168754313 date "2021-06-07" @default.
- W3168754313 modified "2023-10-01" @default.
- W3168754313 title "Enhanced Catalytic NO Reduction in NO–CO–C<sub>3</sub>H<sub>6</sub>–O<sub>2</sub> Reaction Using Pseudo-Spinel (NiCu)Al<sub>2</sub>O<sub>4</sub> Supported on γ-Al<sub>2</sub>O<sub>3</sub>" @default.
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- W3168754313 doi "https://doi.org/10.1021/acscatal.1c01419" @default.
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