Study of geometrical and electronic effects induced by hydrogen chemisorption on supported Pt particles. Analysis of Pt-H EXAFS and Pt-H anti-bonding state shape resonances

被引：35

作者：

Koningsberger, DC

Oudenhuijzen, MK

Bitter, JH

Ramaker, DE

机构：

[1] Univ Utrecht, Debye Inst, Dept Inorgan Chem & Catalysis, NL-3508 TB Utrecht, Netherlands

[2] George Washington Univ, Dept Chem, Washington, DC 20052 USA

[3] George Washington Univ, Inst Mat Sci, Washington, DC 20052 USA

来源：

TOPICS IN CATALYSIS | 2000年 / 10卷 / 3-4期

关键词：

Pt-H EXAFS; Pt-H anti-bonding state shape resonance; hydrogen chemisorption; supported Pt catalysts; metal-support interaction;

D O I：

10.1023/A:1019153226151

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Geometrical and electronic effects induced by hydrogen chemisorption on supported Pt particles are studied by analysing the Pt-H anti-bonding shape resonance. The fundamental principles of a new analysis method of the L-2 and L-3 X-ray absorption edges are summarised. The method is used for studying the Pt-H bonding properties of weakly and strongly bonded hydrogen on surfaces of supported metal catalysts. Also the interaction of hydrogen with a Pt/CeO2 catalyst as a function of the reduction temperature is investigated. The new analysis method makes it possible to follow the changes in the electronic structure of a Pt/Al2O3 catalyst as a function of the metal particle size.

引用

页码：167 / 177

页数：11

共 24 条

[1] A new characterization method for adsorbed hydrogen on supported Pt particles [J].