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- W2788898911 startingPage "155" @default.
- W2788898911 abstract "New insights from recent reports are integrated to generate an improved depiction of the reaction mechanisms for the selective catalytic reduction (SCR) of NOx with ammonia over Cu-containing zeolites (mainly chabazite) and Fe-containing zeolite catalysts. The reaction network over Cu-containing zeolites is consistent with the mixed oxidation state of copper cations as determined by operando X-ray spectroscopy, with a “solvated state” form of Cu(II) and Cu(I) at low-temperature (<225°C) reaction conditions; oxidation of Cu-bounded nitrite into nitrate and the subsequent formation and decomposition of ammonium nitrate explains the formation of N2O as a by-product. A reaction network for NO reduction over Fe-containing zeolites is proposed based on a synthesis from various reported mechanisms. This proposed mechanism is consistent with operando EPR and Mossbauer spectroscopy and predicts a limited production of N2O as compared to Cu-containing zeolites." @default.
- W2788898911 created "2018-03-06" @default.
- W2788898911 creator A5014303951 @default.
- W2788898911 creator A5039313369 @default.
- W2788898911 date "2018-01-01" @default.
- W2788898911 modified "2023-10-17" @default.
- W2788898911 title "On the Mechanism of Ammonia SCR over Cu- and Fe-Containing Zeolite Catalysts" @default.
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