Alumina-supported In2O3, Ga2O3 and B2O3 catalysts for lean NOx reduction with dimethyl ether
Artikel i vetenskaplig tidskrift, 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.

Indium

dme

engine

Boron

Hydrocarbon-SCR

NOx reduction

selective reduction

gamma-alumina

nitrogen monoxide

Dimethyl ether

mechanistic aspects

Gallium

excess oxygen

nitric-oxide

exhaust-gas

Alternative fuel

gallium oxide catalysts

prepared ga2o3-al2o3 catalysts

Alumina

Författare

Sara U Erkfeldt

Kompetenscentrum katalys (KCK)

Martin Petersson

Volvo

Anders Palmqvist

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Applied Catalysis B: Environmental

0926-3373 (ISSN) 1873-3883 (eISSN)

Vol. 117 369-383

Ämneskategorier

Fysikalisk kemi

DOI

10.1016/j.apcatb.2012.01.031