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

被引：50
作者：
BERNAL, S
CALVINO, JJ
CAUQUI, MA
CIFREDO, GA
JOBACHO, A
RODRIGUEZIZQUIERDO, JM
机构：
来源：
APPLIED CATALYSIS A-GENERAL | 1993年 / 99卷 / 01期
关键词：
HIGH RESOLUTION ELECTRON MICROSCOPY; RHODIUM CERIA; RHODIUM TITANIA; SMSI EFFECT;
D O I：
10.1016/0926-860X(93)85035-N
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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/CeO2 no metal decoration effects could be observed. Likewise, the chemisorptive and catalytic behaviour of Rh/CeO2 does not exhibit drastic changes with the reduction temperature. The HRTEM images, however, reveal the occurrence of quite singular rhodium-ceria interaction phenomena.
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页码：1 / 8
页数：8
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