Sulphur dioxide interaction with NOx storage catalysts
Artikel i vetenskaplig tidskrift, 1999
The effect of SO2 on the NOx storage capacity and oxidation and reduction activities of a model Pt/Rh/BaO/Al2O3 NOx storage catalyst was investigated. Addition of 2.5, 7.5 or 25 vol. ppm SO2 to a synthetic lean exhaust gas caused deactivation of the NOx storage function, the oxidation activity and the reduction activity of the catalyst. The degree of deactivation of the NOx storage capacity was found to be proportional to the total SO2 dose that the catalyst had been exposed to. SO2 was found to be accumulated in the catalyst as sulphate.
lean burn
catalyst deactivation
NOx reduction
selective catalytic reduction
platinum
rhodium
barium oxide
sulphur dioxide
NOx storage
propene oxidation
Författare
Per Engström
Chalmers, Teknisk fysik
Kompetenscentrum katalys
Annika Amberntsson
Chalmers, Teknisk fysik
Kompetenscentrum katalys
Magnus Skoglundh
Institutionen för teknisk ytkemi
Kompetenscentrum katalys
Erik Fridell
Chalmers, Teknisk fysik, Kemisk fysik
Kompetenscentrum katalys
Gudmund Smedler
Applied Catalysis B: Environmental
0926-3373 (ISSN) 1873-3883 (eISSN)
Vol. 22 4 L241-L248Drivkrafter
Hållbar utveckling
Styrkeområden
Nanovetenskap och nanoteknik
Transport
Energi
Materialvetenskap
Ämneskategorier
Kemiska processer
Kemiteknik
Kemi
DOI
10.1016/S0926-3373(99)00060-0