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Alumina-supported In2O3, Ga2O3 and B2O3 catalysts for lean NOx reduction with dimethyl ether

Sara Erkfeldt (Kompetenscentrum katalys (KCK)) ; M. Petersson ; Anders Palmqvist (Institutionen för kemi- och bioteknik, Teknisk ytkemi)
Applied Catalysis B-Environmental (0926-3373). Vol. 117 (2012), p. 369-383.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: Hydrocarbon-SCR, NOx reduction, Alumina, Alternative fuel, Dimethyl ether, Indium, Gallium, Boron, prepared ga2o3-al2o3 catalysts, gallium oxide catalysts, engine, exhaust-gas, selective reduction, gamma-alumina, nitric-oxide, mechanistic aspects, nitrogen monoxide, excess oxygen, dme



Denna post skapades 2012-05-21.
CPL Pubid: 157806

 

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Institutioner (Chalmers)

Kompetenscentrum katalys (KCK)
Institutionen för kemi- och bioteknik, Teknisk ytkemi (2005-2014)

Ämnesområden

Fysikalisk kemi

Chalmers infrastruktur