A TEM study on the localization of metal particles in cogelled xerogel catalysts

被引：12
作者：
Heinrichs, Benoit
Geus, John W.
Lambert, Stephanie
Pirard, Jean-Paul
机构：
[1] Univ Liege, Chem Engn Lab, B-4000 Cointe Ougree, Belgium
[2] Univ Utrecht, Dept Inorgan Chem & Catalysis, NL-3584 CA Utrecht, Netherlands
来源：
JOURNAL OF CATALYSIS | 2006年 / 241卷 / 01期
关键词：
cogelled catalysts; metal particles localization; rotating transmission electron microscopy;
D O I：
10.1016/j.jcat.2006.05.003
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 localization of metal and alloy particles in monometallic Pd/SiO2 and bimetallic Pd-Ag/SiO2 sol-gel catalysts prepared by cogelation was examined by rotating transmission electron microscopy. The analysis of the resulting micrograph series provides a direct proof that the 2-to 3-nm active metal nanoparticles in those catalysts are located inside microporous silica particles or aggregates. Such localization has long been suspected but with, up to now, no direct evidence. (c) 2006 Elsevier Inc. All rights reserved.
引用
收藏
页码：229 / 231
页数：3
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