Journal
TOPICS IN CATALYSIS
Volume 52, Issue 13-20, Pages 2092-2096Publisher
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11244-009-9389-8
Keywords
Ceria-zirconia; Calcination temperature; Catalysed soot oxidation; NOx adsorption/desorption; In situ DRIFTS
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The catalytic activity of a Ce0.76Zr0.24O2 mixed oxide, calcined at different temperatures, for soot oxidation under NOx/O-2 was correlated with the catalytic activity for NO2 production. The Ce0.76Zr0.24O2 mixed oxide samples were prepared by co-precipitation and calcination at different temperatures: 500-1000 degrees C. A satisfactory correlation between the total amount of NO2 desorbed after NO + O-2 adsorption at 60 degrees C and the T50% for soot combustion was found. The NOx adsorption process was also explored by in situ DRIFTS.
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