High-temperature-aging-induced encapsulation of metal particles by supportmaterials: Comparative results for Pt, Pd, and Rh on cerium-zirconium mixed oxides

Authors
Graham, GW Jen, HW Chun, W McCabe, RW
Citation
Gw. Graham et al., High-temperature-aging-induced encapsulation of metal particles by supportmaterials: Comparative results for Pt, Pd, and Rh on cerium-zirconium mixed oxides, J CATALYSIS, 182(1), 1999, pp. 228-233
Citations number
8
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
JOURNAL OF CATALYSIS
ISSN journal
00219517 → ACNP
Volume
182
Issue
1
Year of publication
1999
Pages
228 - 233
Database
ISI
SICI code
0021-9517(19990215)182:1<228:HEOMPB>2.0.ZU;2-1
Abstract
High-temperature-aging-induced deep encapsulation of metal particles by the support material in supported-metal catalysts, recently observed in ceria- zirconia-supported Pd catalysts, is also found in comparable Rh catalysts b ut not Pt catalysts. Aging temperature and Pd loading thresholds to encapsu lation are compared for supported Pd catalysts made from ceria-zirconia of varying surface area stability and composition. (C) 1999 Academic Press.