TY - JOUR

T1 - Study of the "Fast SCR" -like mechanism of H2-assisted SCR of NOx with ammonia over Ag/Al2O3

A1 - Doronkin,Dmitry E.

A1 - Fogel,Sebastian

A1 - Tamm,Stefanie

A1 - Olsson,Louise

A1 - Khan,Tuhin Suvra

A1 - Bligaard,Thomas

A1 - Gabrielsson,Pär

A1 - Dahl,Søren

AU - Doronkin,Dmitry E.

AU - Fogel,Sebastian

AU - Tamm,Stefanie

AU - Olsson,Louise

AU - Khan,Tuhin Suvra

AU - Bligaard,Thomas

AU - Gabrielsson,Pär

AU - Dahl,Søren

PB - Elsevier BV

PY - 2012

Y1 - 2012

N2 - It is shown that Ag/Al2O3 is a unique catalytic system for H2-assisted selective catalytic reduction of NOx by NH3 (NH3-SCR) with both Ag and alumina being necessary components of the catalyst. The ability of Ag/Al2O3 and pure Al2O3 to catalyse SCR of mixtures of NO and NO2 by ammonia is demonstrated, the surface species occurring discussed, and a "Fast SCR" -like mechanism of the process is proposed. The possibility of catalyst surface blocking by adsorbed NOx and the influence of hydrogen on desorption of NOx were evaluated by FTIR and DFT calculations. © 2011 Elsevier B.V.

AB - It is shown that Ag/Al2O3 is a unique catalytic system for H2-assisted selective catalytic reduction of NOx by NH3 (NH3-SCR) with both Ag and alumina being necessary components of the catalyst. The ability of Ag/Al2O3 and pure Al2O3 to catalyse SCR of mixtures of NO and NO2 by ammonia is demonstrated, the surface species occurring discussed, and a "Fast SCR" -like mechanism of the process is proposed. The possibility of catalyst surface blocking by adsorbed NOx and the influence of hydrogen on desorption of NOx were evaluated by FTIR and DFT calculations. © 2011 Elsevier B.V.

KW - Fast SCR

KW - NOx SCR

KW - Alumina

KW - Ag/Al2O3

KW - FTIR

U2 - 10.1016/j.apcatb.2011.11.042

DO - 10.1016/j.apcatb.2011.11.042

JO - Applied Catalysis B: Environmental

JF - Applied Catalysis B: Environmental

SN - 0926-3373

VL - 113-114

SP - 228

EP - 236

ER -