Sulphur dioxide interaction with NOx storage catalysts
Journal article, 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

Author

Per Engström

Chalmers, Applied Physics

Competence Centre for Catalysis (KCK)

Annika Amberntsson

Chalmers, Applied Physics

Competence Centre for Catalysis (KCK)

Magnus Skoglundh

Department of Applied Surface Chemistry

Competence Centre for Catalysis (KCK)

Erik Fridell

Chalmers, Applied Physics, Chemical Physics

Competence Centre for Catalysis (KCK)

Gudmund Smedler

Applied Catalysis B: Environmental

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

Vol. 22 4 L241-L248

Driving Forces

Sustainable development

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Transport

Energy

Materials Science

Subject Categories

Chemical Process Engineering

Chemical Engineering

Chemical Sciences

DOI

10.1016/S0926-3373(99)00060-0

More information

Created

10/8/2017