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• W2945792079 endingPage "916" @default.
• W2945792079 startingPage "905" @default.
• W2945792079 abstract "With the objective to investigate the structure-reactivity relationship of CuO/SnO2 and eventually design more applicable catalysts for soot combustion, catalysts with different CuO loadings have been prepared by impregnation method. By using X-ray diffraction and X-ray photoelectron spectroscopy extrapolation methods, it is disclosed that CuO disperses finely on the SnO2 support to form a monolayer with a capacity of 2.09 mmol 100 m−2, which equals 4.8 wt% CuO loading. When the CuO loading is below the capacity, it is in a sub-monolayer state. However, when the loading is above the capacity, CuO micro-crystallites will be formed that coexist with the CuO monolayer. The soot combustion activity of the catalyst increases with the CuO loading until it reaches the monolayer dispersion capacity. A further increase in the CuO loading has no evident influence on the activity. Raman results have testified that with the addition of CuO onto the SnO2 support, a surface-active oxygen species can be formed, the amount of which also increases significantly with the increase in the CuO loading until it reaches the monolayer dispersion capacity. Increasing the CuO loading further has no evident impact on the amount of surface oxygen. Therefore, an apparent monolayer dispersion threshold effect is observed for soot combustion over CuO/SnO2 catalysts. It is concluded that the amount of surface-active oxygen sites is the major factor determining the activity of the catalyst." @default.
• W2945792079 created "2019-05-29" @default.
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• W2945792079 date "2019-06-01" @default.
• W2945792079 modified "2023-10-18" @default.
• W2945792079 title "Tuning SnO2 surface with CuO for soot particulate combustion: The effect of monolayer dispersion capacity on reaction performance" @default.
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• W2945792079 doi "https://doi.org/10.1016/s1872-2067(19)63354-1" @default.
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