Structural analysis of Au/Mg(OH)(2) during deactivation by Debye function analysis

被引：45

作者：

Vogel, W

Cunningham, DAH

Tanaka, K

Haruta, M

机构：

[1] OSAKA NATL RES INST,IKEDA,OSAKA 563,JAPAN

[2] MAX PLANCK GESELL,FRITZ HABER INST,D-14195 BERLIN,GERMANY

来源：

CATALYSIS LETTERS | 1996年 / 40卷 / 3-4期

关键词：

gold catalysis; nano-size; Debye function analysis; TEM;

D O I：

10.1007/BF00815279

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：

Using a Debye function analysis, the presence of icosahedral and face centered cuboctahedral gold in a 1 : 1 ratio has been found in freshly prepared Au/Mg(OH)(2) catalyst. The results support earlier studies which suggest the icosahedral form to be more stable at small nanometer sizes. Interactions between the gold and the Mg(OH)(2) support appear to be weak, with the gold rapidly coagulating over a period of three months. Re-analysis of the aged sample shows the gold to be mainly in the form of truncated decahedra.

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收藏

页码：175 / 181

页数：7

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