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

Authors
Koningsberger, DC Oudenhuijzen, MK Bitter, JH Ramaker, DE
Citation
Dc. Koningsberger et al., Study of geometrical and electronic effects induced by hydrogen chemisorption on supported Pt particles. Analysis of Pt-H EXAFS and Pt-H anti-bondingstate shape resonances, TOP CATAL, 10(3-4), 2000, pp. 167-177
Citations number
24
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
TOPICS IN CATALYSIS
ISSN journal
10225528 → ACNP
Volume
10
Issue
3-4
Year of publication
2000
Pages
167 - 177
Database
ISI
SICI code
1022-5528(2000)10:3-4<167:SOGAEE>2.0.ZU;2-7
Abstract
Geometrical and electronic effects induced by hydrogen chemisorption on sup ported Pt particles are studied by analysing the Pt-H anti-bonding shape re sonance. 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 surf aces 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 el ectronic structure of a Pt/Al2O3 catalyst as a function of the metal partic le size.