The high-temperature durability of Rh-free threeway catalysts used for automobile emission control

Citation
Sy. Li et al., The high-temperature durability of Rh-free threeway catalysts used for automobile emission control, REACT KIN C, 65(2), 1998, pp. 293-300
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
REACTION KINETICS AND CATALYSIS LETTERS
ISSN journal
0133-1736 → ACNP
Volume
65
Issue
2
Year of publication
1998
Pages
293 - 300
Database
ISI
SICI code
0133-1736(199811)65:2<293:THDORT>2.0.ZU;2-V
Abstract
The high-temperature durability of cordierite honeycomb Rh-free three-way c atalysts (TWC) containing additives has been studied by calcining catalysts at various temperatures in the interval of 600 similar to 1100 degrees C. The three-way performances of these catalysts were evaluated for the reacti on of carbon monoxide(CO), hydrocarbon(HC) and nitrogen oxides(NOx) at give n conditions by using a tired bed reactor. The results show that after Rh-f ree TWC are thermally aged in air at 1100 degrees C for 5 h and 950 degrees C for 104 h, the TWC still have better three-way activity compared with Rh -containing TWC.