Dynamic multinuclear sites formed by mobilized copper ions in NOₓ selective catalytic reduction

Copper ions exchanged into zeolites are active for the selective catalytic reduction (SCR) of nitrogen oxides (NOₓ) with ammonia (NH₃), but the low-temperature rate dependence on copper (Cu) volumetric density is inconsistent with reaction at single sites. We combine steady-state and transient kinet...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2017-09, Vol.357 (6354), p.898-903
Hauptverfasser:	Paolucci, Christopher, Khurana, Ishant, Parekh, Atish A., Li, Sichi, Shih, Arthur J., Li, Hui, Di Iorio, John R., Albarracin-Caballero, Jonatan D., Yezerets, Aleksey, Miller, Jeffrey T., Delgass, W. Nicholas, Ribeiro, Fabio H., Schneider, William F., Gounder, Rajamani
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorption spectroscopy Aluminum Ammonia Catalysis Catalysts Copper Diesel engines First principles Heavy metals Ion pairs Ions Low temperature Nitrogen oxides Oxides Oxygen Photochemicals Selective catalytic reduction Spectroscopy Spectrum analysis Tethering X-ray absorption spectroscopy X-ray spectroscopy Zeolites
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