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Oxidation state of bimetallic PdCu catalysts during liquid phase nitrate reduction

被引：32
作者：
Edelmann, A
Schiesser, W
Vinek, H
Jentys, A
机构：
[1] Tech Univ Munich, Lehrstuhl Tech Chem 2, D-85747 Garching, Germany
[2] Vienna Univ Technol, Inst Phys & Theoret Chem, A-1060 Vienna, Austria
来源：
CATALYSIS LETTERS | 2000年 / 69卷 / 1-2期
关键词：
PdCu/Al2O3; in situ XANES; EXAFS; nitrate reduction; aqueous phase;
D O I：
10.1023/A:1019032931079
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 oxidation state and the structural properties of Al2O3-supported bimetallic PdCu catalysts during the catalytic reduction of KNO3 carried out in the aqueous phase were investigated by X-ray absorption spectroscopy. Under reaction conditions the noble metal component (Pd) was in a reduced state, while the less noble metal (Cu) was found to be partially oxidized. A PdCu phase was formed in the bimetallic catalysts, which appears to be located in small domains on the surface of Pd rich particles.
引用
收藏
页码：11 / 16
页数：6
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