The Role of Silver for the H-2-Effect in H-2-Assisted Selective Catalytic Reduction of NOx with NH3 Over Ag/Al2O3
Journal article, 2013
Silver/alumina catalysts are known to be highly active for hydrogen-assisted selective catalytic reduction (SCR) of nitrogen oxides. A comparison of silver/alumina and pure alumina catalysts shows that hydrogen conversion occurs on the silver. Subsequently formed NO2 is crucial for NH3-SCR and in addition products from the hydrogen conversion influence nitrates on the alumina by spill-over.
Ag/Al2O3
Mechanism
gamma-Alumina
NH3-SCR
N2O
NO2
Hydrocarbon-SCR
Author
Stefanie Tamm
Competence Centre for Catalysis (KCK)
Chalmers, Chemical and Biological Engineering, Chemical Reaction Engineering
Catalysis Letters
1011-372X (ISSN) 1572-879X (eISSN)
Vol. 143 9 957-965Areas of Advance
Transport
Subject Categories
Physical Chemistry
DOI
10.1007/s10562-013-1055-x