English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Model Catalysts Based on Au Clusters and Nanoparticles

Nilius, N., Risse, T., Shaikhutdinov, S. K., Sterrer, M., & Freund, H.-J. (2014). Model Catalysts Based on Au Clusters and Nanoparticles. In D. M. P. Mingos (Ed.), Gold Clusters, Colloids and Nanoparticles II (pp. 91-138). doi:10.1007/430_2013_135.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Nilius, Niklas1, Author              
Risse, Thomas1, Author              
Shaikhutdinov, Shamil K.1, Author              
Sterrer, Martin1, Author              
Freund, Hans-Joachim1, Author              
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, Berlin, DE, ou_24022              

Content

show
hide
Free keywords: Adsorption Au clusters Chemical modification Dopants Electronic properties Oxide films Wet impregnation
 Abstract: Small Au particles have been shown to exhibit interesting catalytic properties. In an attempt to parallel catalytic studies on powder supports we have undertaken a series of model studies using oxide films as support. We address the formation of Au aggregates as a function of size starting from Au atoms to clusters and islands of larger size and as a function of the support. In addition we have studied different support materials such as alumina and iron oxide and we compare ultrathin and thicker oxide films of the same material (MgO). From a comparison of charge transfer through ultrathin films with the situation encountered in thicker films, we propose the use of dopants in bulk materials to control particle shape.We include the study of carbon monoxide adsorption on Au clusters of varying size. It is demonstrated how chemical modification (hydroxylation) of oxide supports influence particle growth and properties. Finally, we report on effects to study the processes involved in particle growth by wet impregnation in order to bridge the gap to catalyst preparation under realistic conditions. On that basis one may now compare properties of supported particles prepared in ultrahigh vacuum using physical vapor deposition with those prepared by wet impregnation.

Details

show
hide
Language(s): eng - English
 Dates: 20132013-112014
 Publication Status: Published in print
 Pages: 48
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/430_2013_135
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Gold Clusters, Colloids and Nanoparticles II
Source Genre: Book
 Creator(s):
Mingos, David Michael P., Editor
Affiliations:
-
Publ. Info: -
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 91 - 138 Identifier: ISBN: 978-3-319-07844-1

Source 2

show
hide
Title: Structure and Bonding
Source Genre: Series
 Creator(s):
Affiliations:
Publ. Info: Berlin : Springer
Pages: - Volume / Issue: 162 Sequence Number: - Start / End Page: - Identifier: -