Influence of the type of reducing agent (H2, CO, C3H6 and C3H8) on the reduction of stored NOX in a Pt/BaO/Al2O3 model catalyst
Journal article, 2004
In this investigation, a comparative study for a NOx storage catalytic system was performed focusing on the parameters that affect the reduction by using different reductants (H2, CO, C3H6 and C3H8) and different temperatures (350, 250 and 150 degrees C), for a Pt/BaO/Al2O3 catalyst. Transient experiments show that H2 and CO are highly efficient reductants compared to C3H6 which is somewhat less efficient. H2 shows a significant reduction effect at relatively low temperature (150 degrees C) but with a low storage capacity. We find that C3H8 does not show any NOx reduction ability for NOx stored in Pt/BaO/Al2O3 at any of the temperatures. The formation of ammonia and nitrous oxide is also discussed.
3-WAY CATALYST
HYDROCARBONS
NITROGEN-OXIDES
STORAGE-REDUCTION
ENGINE
SULFUR DEACTIVATION
BEHAVIOR
LEAN-BURN CONDITIONS
RELEASE
STORAGE
NOx
Author
Hussam Abdulhamid
Chalmers, Department of Materials and Surface Chemistry, Applied Surface Chemistry
Competence Centre for Catalysis (KCK)
Erik Fridell
Competence Centre for Catalysis (KCK)
Chalmers, Applied Physics, Chemical Physics
Magnus Skoglundh
Competence Centre for Catalysis (KCK)
Chalmers, Department of Materials and Surface Chemistry, Applied Surface Chemistry
Topics in Catalysis
1022-5528 (ISSN) 1572-9028 (eISSN)
Vol. 30-31 1-4 161-168Driving Forces
Sustainable development
Areas of Advance
Nanoscience and Nanotechnology
Transport
Energy
Materials Science
Subject Categories
Physical Sciences
Chemical Engineering
DOI
10.1023/B:TOCA.0000029745.87107.b8