Alumina-supported In2O3, Ga2O3 and B2O3 catalysts for lean NOx reduction with dimethyl ether
Journal article, 2012
Alumina-supported In2O3, Ga2O3 and B2O3 were investigated as catalysts for lean NOx reduction with DME as reducing agent and compared to pure Al2O3 and In2O3. The In2O3-promoted alumina catalysts showed the highest NOx conversion at low temperatures, although with a narrow temperature window. Pure In2O3, on the other hand, was inactive for NOx reduction with DME. The Ga2O3- and B2O3-promoted alumina catalysts gave the highest NOx conversion at higher temperatures, showed a temperature window similar to pure alumina, but were less sensitive to H2O inhibition. Possible reasons for these observations are discussed.
Alternative fuel
dme
mechanistic aspects
NOx reduction
Indium
selective reduction
Boron
nitric-oxide
Gallium
gallium oxide catalysts
excess oxygen
Hydrocarbon-SCR
engine
Dimethyl ether
gamma-alumina
nitrogen monoxide
prepared ga2o3-al2o3 catalysts
Alumina
exhaust-gas
Author
Sara U Erkfeldt
Competence Centre for Catalysis (KCK)
Martin Petersson
Volvo Group
Anders Palmqvist
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Applied Catalysis B: Environmental
0926-3373 (ISSN) 1873-3883 (eISSN)
Vol. 117-118 369-383Subject Categories
Physical Chemistry
DOI
10.1016/j.apcatb.2012.01.031