Title: Mechanistic Study of Carbon Oxidation with NO2 and O-2 in the Presence of a Ru/Na-Y Catalyst
Authors: Jeguirim, M ×
Tschamber, V
Villani, K
Brilhac, J. F
Martens, Johan #
Issue Date: May-2009
Publisher: J. Wiley
Series Title: Chemical Engineering & Technology vol:32 issue:5 pages:830-834
Abstract: The oxidation of model soot by NO2 and O-2 in the presence of a Ru/Na-Y catalyst under conditions close to automotive exhaust gas after-treatment systems is investigated. Isothermal oxidation experiments of a physical mixture of carbon black and catalyst were performed ill a temperature range of 300-400 degrees C. A remarkable increase of the oxidation rate by NO2 and O-2 in the presence of the Ru/Na-Y catalyst was observed. An overall mechanism involving oxygen transfer from the Ru catalyst to the carbon surface leading to an increase of C(O) complexes is proposed. These C(O) complexes are destabilized in the presence of NO2 increasing the carbon oxidation rate.
ISSN: 0930-7516
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Centre for Surface Chemistry and Catalysis
× corresponding author
# (joint) last author

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