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- W2893010848 abstract "Some fly ash components such as K could seriously weaken the catalytic performance of SCR catalyst. In this study, the core-shell-structured [email protected]2 catalyst is synthesized by dipping deposition method and used for the NH3-SCR reaction. The results show that [email protected]2 catalyst exhibits higher K resistance than MnFeOx/TiO2 catalyst prepared by impregnation method. And the correlativity between the core-shell morphology and K resistance of [email protected]2 catalyst is studied by TEM, N2 adsorption, XRD, XPS, TPR, TPD and in situ DRIFT. It can be found that the shell of TiO2 has a protective effect on the active species in [email protected]2 catalyst. And the core-shell structure of [email protected]2 catalyst can produce more Mn4+ and chemisorbed oxygen species on its surface, improving reducibility and surface acidity. Moreover, the core-shell structure of [email protected]2 catalyst is beneficial to the adsorption of NH3 and the formation of NO2, resulting in the favored SCR reaction via the Eley−Rideal and the Langmuir−Hinshelwood routes. Therefore, [email protected]2 catalyst shows excellent K tolerance." @default.
- W2893010848 created "2018-10-05" @default.
- W2893010848 creator A5013094481 @default.
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- W2893010848 date "2019-10-01" @default.
- W2893010848 modified "2023-09-29" @default.
- W2893010848 title "SCR of NOx by NH3 over MnFeOx@TiO2 catalyst with a core-shell structure: The improved K resistance" @default.
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- W2893010848 doi "https://doi.org/10.1016/j.joei.2018.09.005" @default.
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