A "Smart" Catalyst: Sinter-Resistant Supported Iridium Clusters Visualized with Electron Microscopy

被引：89
作者：
Aydin, Ceren [1 ]
Lu, Jing [1 ]
Browning, Nigel D. [1 ]
Gates, Bruce C. [1 ]
机构：
[1] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2012年 / 51卷 / 24期
关键词：
cluster compounds; heterogeneous catalysis; iridium; supported catalysts; surface chemistry; DENSITY-FUNCTIONAL THEORY; BEAM IRRADIATION; METAL; MECHANISM; PLATINUM; SURFACE; NANOCLUSTERS; GROWTH; OXIDE; SIZE;
D O I：
10.1002/anie.201201726
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Like billiard balls: Atomic-scale observations by electron microscopy of supported iridium nanoclusters show that the nanoclusters aggregate to reach a critical diameter of approximately 1nm and then resist further aggregation (see picture). The observations highlight the potential for this catalyst to assemble into clusters that may be nearly optimum for catalytic activity. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：5929 / 5934
页数：6
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