High energy resolution fluorescence detection x-ray absorption spectroscopy: Detection of adsorption sites in supported metal catalysts

被引：0
|
作者：
Tromp, Moniek [1 ]
van Bokhoven, Jeroen A. [2 ]
Safonova, Olga V. [3 ]
De Groot, Frank M. F. [4 ]
Evans, John [1 ,5 ]
Glatzel, Pieter [3 ]
机构：
[1] Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England
[2] ETH, Inst Chem & Bioengn, Zurich, Switzerland
[3] ESRF, Grenoble, France
[4] Univ Utrecht, NL-3508 TC Utrecht, Netherlands
[5] Diamond Light Source, Didcot, Oxon, England
来源：
X-RAY ABSORPTION FINE STRUCTURE-XAFS13 | 2007年 / 882卷
基金：
瑞士国家科学基金会;
关键词：
high energy resolution; HERFD XAS; XANES; in situ; CO adsorption;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High energy resolution fluorescence detection (HERFD) X-ray adsorption spectroscopy (Y-AS) is demonstrated as a new tool to identify the geometry of metal adsorption sites and the orbitals involved in bonding. The type of CO adsorption site on a nanoparticular Pt-Al2O3 catalyst is determined. The orbitals involved in the Pt - CO bonding are identified using theoretical FEFF8.0 calculations. In situ application of HERFD XAS is applicable to a large number of catalytic systems and will provide fundamental insights in structure - performance relationships.
引用
收藏
页码：651 / +
页数：2
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