English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Alumina supported model Pd–Ag catalysts: A combined STM, XPS, TPD and IRAS study

MPS-Authors
/persons/resource/persons21713

Khan,  Neetha A.
Chemical Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22184

Uhl,  Alexander
Chemical Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons22106

Shaikhutdinov,  Shamil K.
Chemical Physics, Fritz Haber Institute, Max Planck Society;

/persons/resource/persons21524

Freund,  Hans-Joachim
Chemical Physics, Fritz Haber Institute, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Khan, N. A., Uhl, A., Shaikhutdinov, S. K., & Freund, H.-J. (2006). Alumina supported model Pd–Ag catalysts: A combined STM, XPS, TPD and IRAS study. Surface Science, 600(9), 1849-1853. doi:10.1016/j.susc.2006.02.016.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0011-04A7-F
Abstract
The bimetallic Pd–Ag model catalysts were prepared by physical vapor deposition on thin alumina films. The morphology and structure of the Pd–Ag particles were studied by STM, XPS, and by TPD and IRAS of CO. The results showed the formation of true alloy particles with Ag segregated at the surface. The addition of Ag first suppresses the most strongly bonded CO on threefold hollow sites of Pd. With further increasing Ag coverage, only isolated Pd atoms surrounded by Ag atoms are likely present on the surface. The results on CO adsorption suggest that the model Pd–Ag system mimics the structure of the real Pd–Ag catalysts.