VEHICLE EXHAUST CATALYSIS .2. THE EFFECT OF TRACES OF SULFUR-DIOXIDE ON THE PERFORMANCE OF 3-WAY VEHICLE EMISSION CATALYSTS

Authors
WHITTINGTON BI JIANG CJ TRIMM DL
Citation
Bi. Whittington et al., VEHICLE EXHAUST CATALYSIS .2. THE EFFECT OF TRACES OF SULFUR-DIOXIDE ON THE PERFORMANCE OF 3-WAY VEHICLE EMISSION CATALYSTS, Catalysis today, 26(1), 1995, pp. 47-51
Citations number
14
Categorie Soggetti
Engineering, Chemical","Chemistry Applied","Chemistry Physical
Journal title
Catalysis today → ACNP
ISSN journal
09205861
Volume
26
Issue
1
Year of publication
1995
Pages
47 - 51
Database
ISI
SICI code
0920-5861(1995)26:1<47:VEC.TE>2.0.ZU;2-U
Abstract
The effect of small amounts of sulphur dioxide on the performance of a three-way vehicle exhaust catalyst has been studied. Removal of propa ne from a stoichiometric gas mixture containing oxygen was reduced, bu t the effect was largely reversible. Small amounts of SO2 poisoned irr eversibly the steam reforming and water-gas shift reactions, apparentl y as a result of a support sulphate/metal sulphite/sulphide couple und er oxidising-reducing conditions.