Reduction of NO by propene over Pt, Pd and Rh-based ZSM-5 under lean-burn conditions

Citation
J. Perez-ramirez et al., Reduction of NO by propene over Pt, Pd and Rh-based ZSM-5 under lean-burn conditions, REACT KIN C, 69(2), 2000, pp. 385-392
Citations number
12
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
REACTION KINETICS AND CATALYSIS LETTERS
ISSN journal
01331736 → ACNP
Volume
69
Issue
2
Year of publication
2000
Pages
385 - 392
Database
ISI
SICI code
0133-1736(200003)69:2<385:RONBPO>2.0.ZU;2-Y
Abstract
Selective catalytic reduction of NO by propene has been investigated over n oble metal (Pt, Pd, Rh)-based ZSM-5 catalysts. These samples were tested in a gas mixture system in the presence of excess oxygen, simulating lean-bur n exhaust gases. The sequence in activity for NO reduction was Pt > Rh simi lar to Pd. Regarding the selectivity of the reaction to N-2, an opposite tr end was observed: Rh > Pd similar to Pt. The catalytic systems have present ed stable operation under isothermal conditions during time-on-stream exper iments.