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- W2930480796 abstract "Oxygen vacancy defect (OVD) as one of the crystal defects is critical to the reactivity of heterogeneous catalyst surface for catalytic NO reduction with NH3 (NH3-SCR). Here, we propose a simple and feasible method to enhance OVDs through Ce doping manganese oxide octahedral molecular sieves (Ce-K-OMS-2), where it was proven that Ce mainly enters the framework structure of K-OMS-2. The robust NH3-SCR catalytic test showed that the presence of Ce could lower the catalytic temperature and activity for NO conversion (∼100%) across a wide temperature span of 140–230 °C. The characterization results indicated the distortion of octahedral units after Ce substitution and the subsequent introduction of OVDs. Moreover, we demonstrated by density functional theory (DFT + U) calculations that the unique nanostructure of Ce doping K-OMS-2 with OVDs in the framework can alter the local bond lengths and the density of states, thereby obviously accelerating the low-temperature NH3-SCR. NH3 prefers to be adsorbed at the ..." @default.
- W2930480796 created "2019-04-11" @default.
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- W2930480796 date "2019-04-05" @default.
- W2930480796 modified "2023-10-17" @default.
- W2930480796 title "Insight into Low-Temperature Catalytic NO Reduction with NH<sub>3</sub> on Ce-Doped Manganese Oxide Octahedral Molecular Sieves" @default.
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- W2930480796 doi "https://doi.org/10.1021/acs.jpcc.9b01048" @default.
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