Influence of Gas Phase Reactions on DME-SCR over gamma-alumina
Journal article, 2011
Above 300 A degrees C, gas phase reactions occur between dimethyl ether (DME), NO and O-2 generating NO2. The influence of these reactions on DME-SCR was studied in a setup that decoupled the occurrence of gas phase reactions from catalyst temperature. NOx conversion decreased at 350 A degrees C and increased at 250 A degrees C due to less DME available and higher NCO conversion with NO2, respectively.
reaction-mechanism
spectroscopy
reduction
dimethyl ether
selective catalytic-reduction
Gas phase reaction
Dimethyl ether
nitrogen-oxides
gamma-alumina
Transmission infrared spectroscopy
lean nox
ag/al2o3 catalyst
ir
in-situ ftir
higher hydrocarbons
low-temperature oxidation
DME
NOx-reduction
Author
Stefanie Tamm
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Competence Centre for Catalysis (KCK)
Hanna Härelind Ingelsten
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Competence Centre for Catalysis (KCK)
Anders Palmqvist
Competence Centre for Catalysis (KCK)
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Catalysis Letters
1011-372X (ISSN) 1572-879X (eISSN)
Vol. 141 5 656-664Driving Forces
Sustainable development
Areas of Advance
Nanoscience and Nanotechnology
Transport
Energy
Materials Science
Subject Categories
Chemical Sciences
DOI
10.1007/s10562-011-0556-8