Recent advances in hybrid metal oxide–zeolite catalysts for low-temperature selective catalytic reduction of NOx by ammonia
A hybrid catalytic system comprised of metal oxide and Cu or Fe exchanged zeolite
components represents a potential advancement of state-of-the-art for selective catalytic …
components represents a potential advancement of state-of-the-art for selective catalytic …
Influence of ion mobility on the redox and catalytic properties of Cu ions in zeolites
This contribution aims at analysing the current understanding about the influence of Al
distribution, zeolite topology, ligands/reagents and oxidation state on ions mobility in Cu …
distribution, zeolite topology, ligands/reagents and oxidation state on ions mobility in Cu …
Structure and Reactivity of Oxygen-Bridged Diamino Dicopper(II) Complexes in Cu-Ion-Exchanged Chabazite Catalyst for NH3-Mediated Selective Catalytic …
The NH3-mediated selective catalytic reduction (NH3-SCR) of NOx over Cu-ion-exchanged
chabazite (Cu-CHA) catalysts is the basis of the technology for abatement of NOx from …
chabazite (Cu-CHA) catalysts is the basis of the technology for abatement of NOx from …
On the Redox Mechanism of Low‐Temperature NH3‐SCR over Cu‐CHA: A Combined Experimental and Theoretical Study of the Reduction Half Cycle
Cu‐CHA is the state‐of‐the‐art catalyst for the Selective Catalytic Reduction (SCR) of NOx
in vehicle applications. Although extensively studied, diverse mechanistic proposals still …
in vehicle applications. Although extensively studied, diverse mechanistic proposals still …
Dynamic Binuclear CuII Sites in the Reduction Half-Cycle of Low-Temperature NH3–SCR over Cu-CHA Catalysts
W Hu, F Gramigni, ND Nasello, N Usberti… - ACS …, 2022 - ACS Publications
As the state-of-the-art catalyst for the selective catalytic reduction (SCR) of NOx from lean-
burn engines, Cu-exchanged chabazite zeolite (Cu-CHA) has been a spotlight in …
burn engines, Cu-exchanged chabazite zeolite (Cu-CHA) has been a spotlight in …
Effects of dioxygen pressure on rates of NOx selective catalytic reduction with NH3 on Cu-CHA zeolites
Abstract At low temperatures (< 523 K), the selective catalytic reduction (SCR) of NO with NH
3 on Cu-exchanged zeolites occurs via elementary steps catalyzed by NH 3-solvated Cu …
3 on Cu-exchanged zeolites occurs via elementary steps catalyzed by NH 3-solvated Cu …
Mechanism of NH3–Selective Catalytic Reduction (SCR) of NO/NO2 (Fast SCR) over Cu-CHA Zeolites Studied by In Situ/Operando Infrared Spectroscopy and …
In situ/operando infrared (IR) spectroscopy, kinetics, and density functional theory (DFT)
calculations were combined to propose a comprehensive mechanistic model of the selective …
calculations were combined to propose a comprehensive mechanistic model of the selective …
Investigating the Low Temperature Formation of CuII‐(N,O) Species on Cu‐CHA Zeolites for the Selective Catalytic Reduction of NOx
C Negri, PS Hammershøi… - … A European Journal, 2018 - Wiley Online Library
In this work, we show the potentiality of operando FTIR spectroscopy to follow the formation
of CuII‐(N, O) species on Cu exchanged chabazite zeolites (Cu‐CHA), active for the …
of CuII‐(N, O) species on Cu exchanged chabazite zeolites (Cu‐CHA), active for the …
In Situ/Operando IR and Theoretical Studies on the Mechanism of NH3–SCR of NO/NO2 over H–CHA Zeolites
The mechanism of selective catalytic reduction (SCR) of a NO/NO2 mixture by NH3 (fast
SCR) over H–CHA zeolites was revealed by in situ/operando IR spectroscopy and DFT …
SCR) over H–CHA zeolites was revealed by in situ/operando IR spectroscopy and DFT …
Synergy of vanadia and ceria in the reaction mechanism of low-temperature selective catalytic reduction of NOx by NH3
W Hu, R Zou, Y Dong, S Zhang, H Song, S Liu… - Journal of …, 2020 - Elsevier
Elucidation of redox mechanism is vital to develop highly active catalysts for selective
catalytic reduction (SCR) of NOx. Here, we apply an integrated experimental and theoretical …
catalytic reduction (SCR) of NOx. Here, we apply an integrated experimental and theoretical …