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
Artikel i vetenskaplig tidskrift, 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
Författare
Hussam Abdulhamid
Chalmers, Institutionen för material- och ytkemi, Teknisk ytkemi
Kompetenscentrum katalys
Erik Fridell
Kompetenscentrum katalys
Chalmers, Teknisk fysik, Kemisk fysik
Magnus Skoglundh
Kompetenscentrum katalys
Chalmers, Institutionen för material- och ytkemi, Teknisk ytkemi
Topics in Catalysis
1022-5528 (ISSN) 1572-9028 (eISSN)
Vol. 30-31 1-4 161-168Drivkrafter
Hållbar utveckling
Styrkeområden
Nanovetenskap och nanoteknik
Transport
Energi
Materialvetenskap
Ämneskategorier
Fysik
Kemiteknik
DOI
10.1023/B:TOCA.0000029745.87107.b8