METAL-SUPPORT INTERACTION PHENOMENA IN RHODIUM CERIA AND RHODIUM TITANIA CATALYSTS - COMPARATIVE-STUDY BY HIGH-RESOLUTION TRANSMISSION ELECTRON-SPECTROSCOPY

Authors
BERNAL S CALVINO JJ CAUQUI MA CIFREDO GA JOBACHO A RODRIGUEZIZQUIERDO JM
Citation
S. Bernal et al., METAL-SUPPORT INTERACTION PHENOMENA IN RHODIUM CERIA AND RHODIUM TITANIA CATALYSTS - COMPARATIVE-STUDY BY HIGH-RESOLUTION TRANSMISSION ELECTRON-SPECTROSCOPY, Applied catalysis. A, General, 99(1), 1993, pp. 1-8
Citations number
21
Categorie Soggetti
Chemistry Physical","Environmental Sciences
Journal title
Applied catalysis. A, General → ACNP
ISSN journal
0926860X
Volume
99
Issue
1
Year of publication
1993
Pages
1 - 8
Database
ISI
SICI code
0926-860X(1993)99:1<1:MIPIRC>2.0.ZU;2-N
Abstract
The high resolution transmission electron microscopy (HRTEM) study of Rh/CeO2 and Rh/TiO2 catalysts reduced at temperatures ranging from 473 K to 773 K suggests that the metal-support interaction phenomena they show are different. In contrast to that found for Rh/TiO2, over Rh/Ce O2 no metal decoration effects could be observed. Likewise, the chemis orptive and catalytic behaviour of Rh/CeO2 does not exhibit drastic ch anges with the reduction temperature. The HRTEM images, however, revea l the occurrence of quite singular rhodium-ceria interaction phenomena .