English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Surface dynamics of the intermetallic catalyst Pd2Ga, Part I - Structural stability in UHV and different gas atmospheres

Wowsnick, G., Teschner, D., Kasatkin, I., Girgsdies, F., Armbrüster, M., Zhang, A., et al. (2014). Surface dynamics of the intermetallic catalyst Pd2Ga, Part I - Structural stability in UHV and different gas atmospheres. Journal of Catalysis, 309, 209-220. doi:10.1016/j.jcat.2013.09.019.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0017-C323-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0018-2886-7
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Wowsnick, Gregor1, Author
Teschner, Detre1, Author
Kasatkin, Igor1, Author
Girgsdies, Frank1, Author
Armbrüster, Marc2, Author              
Zhang, Aiping3, Author              
Grin, Yuri4, Author              
Schlögl, Robert1, Author
Behrens, Malte1, Author
Affiliations:
1external, ou_persistent22              
2Marc Armbrüster, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863414              
3Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
4Juri Grin, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863413              

Content

show
hide
Free keywords: -
 Abstract: The structural and electronic properties of unsupported Pd2Ga were investigated after different pre-treatments. Pd2Ga provides with respect to elemental Pd a significantly modified electronic structure with its d-band center being shifted away from the Fermi level. It was found that the electronic structure of the surface depends strongly on its pre-treatment and on the chemical environment. We report a detailed bulk and surface characterization of the intermetallic compound by means of XRD, DTA/TG/MS, SEM, XPS, and HR-TEM. At moderate temperatures, the bulk of Pd2Ga is chemically resistant against H-2 or O-2 atmosphere and against mechanical load. Contrariwise its surface is highly sensitive against even traces of oxidizing agents, leading quickly to a disparity between bulk and surface structure and composition. The reversibility of this dynamic effect depends on the degree of decomposition and on the sample history. An almost pure intermetallic surface can only be achieved in highly reducing atmospheres. (C) 2013 Elsevier Inc. All rights reserved.

Details

show
hide
Language(s):
 Dates: 2014-01-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Catalysis
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: San Diego, CA. : Academic Press
Pages: - Volume / Issue: 309 Sequence Number: - Start / End Page: 209 - 220 Identifier: ISSN: 0021-9517
CoNE: /journals/resource/954922645027