FTIR Spectroscopic Investigation of Zeolite-Supported Pd-Ag Bimetallic Clusters

被引：18
|
作者：
Terekhina, Olga [1 ]
Roduner, Emil [1 ]
机构：
[1] Univ Stuttgart, Inst Phys Chem, D-70569 Stuttgart, Germany
来源：
JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 12期
关键词：
CO ADSORPTION; NAY ZEOLITE; NANOPARTICLES; CATALYSTS; SILVER; IR; PARTICLES; GROWTH; EXAFS; AU;
D O I：
10.1021/jp2113297
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 catalytic properties of bimetallic supported metal catalysts depend not only on the type and proportion of the metallic elements but, in an essential way, also on their alloying behavior. Here, CO was used as a probe molecule to test the electronic properties of a PdAg bimetallic catalyst with different Pd/Ag ratios, supported on NaY zeolite. Although CO does not adsorb on Ag-0, changes in IR spectra on addition of Ag to Pd samples provide clear evidence that the two metals form a nanoalloy. Furthermore, addition of Ag stabilizes the Pd clusters.
引用
收藏
页码：6973 / 6979
页数：7
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