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Phosphorus were employed to investigate the influences on the acid sites and reaction mechanism of FeTiOx SCR catalyst. The introduction of phosphorus inhibited the SCR activity by suppressing the redox property, decreasing the surface acidity and reducing the surface area. In particular, phosphorus preferentially bonded to the electron-deficient Ti4+ and Fe3+ cations on the surface as P-O-Fe and...
Four metals (Fe, Mn, La and Y) doped onto CeO2 were prepared by coprecipitation, and the corresponding slab models were constructed by DFT calculations to investigate the influences of dopants on the adsorption and oxidation of NH3 molecules. A higher reducibility, a larger quantity of labile surface oxygen and a greater extent of surface distortion were responsible for the higher NH3 activation of...
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