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.

引用

页码：1 / 8

页数：8