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 (KCK)

Annika Amberntsson

Chalmers, Teknisk fysik

Kompetenscentrum katalys (KCK)

Magnus Skoglundh

Institutionen för teknisk ytkemi

Kompetenscentrum katalys (KCK)

Erik Fridell

Chalmers, Teknisk fysik, Kemisk fysik

Kompetenscentrum katalys (KCK)

Gudmund Smedler

Applied Catalysis B: Environmental

0926-3373 (ISSN) 1873-3883 (eISSN)

Vol. 22 L241-L248

Drivkrafter

Hållbar utveckling

Styrkeområden

Nanovetenskap och nanoteknik

Transport

Energi

Materialvetenskap

Ämneskategorier

Kemiska processer

Kemiteknik

Kemi

DOI

10.1016/S0926-3373(99)00060-0