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  Oxygen activation on oxide surfaces: A perspective at the atomic level

Freund, H.-J. (2014). Oxygen activation on oxide surfaces: A perspective at the atomic level. Catalysis Today, 238, 2-9. doi:10.1016/j.cattod.2014.05.037.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-001A-16F1-E Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0023-D39D-3
Genre: Journal Article

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2014
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Elsevier
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 Creators:
Freund, Hans-Joachim1, Author              
Affiliations:
1Chemical Physics, Fritz Haber Institute, Max Planck Society, ou_24022              

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Free keywords: Oxygen activation; Oxide surfaces; Adsorption
 Abstract: Thin oxide films have been used as model supports to unravel the influence of the oxide–metal and oxide–gas interface. We discuss the influence of defects in the oxide lattice and the oxide surface on properties of adsorbed species, in particular the formation of oxide particles from a deposited transition metal onto ceria and of adsorbed oxygen from the gas phase. Here we correlate the structure of the particles, as revealed by a combination of STM and spectroscopic as well as theoretical calculations, with their reactive properties. The nature of the involved defects is characterized by adsorption of Au as a way to correlate the influence of various defects of different structure on the Au charge state. In a second case study, we demonstrate the influence of dopants within the supporting oxide on the adsorption of oxygen on a defect free surface. This is shown to be potentially relevant for the activation of methane in oxidative methane coupling reactions, as recently demonstrated.

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Language(s): eng - English
 Dates: 2014-05-192014-03-052014-05-202014-07-022014-12
 Publication Status: Published in print
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.cattod.2014.05.037
 Degree: -

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Title: Catalysis Today
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: - Volume / Issue: 238 Sequence Number: - Start / End Page: 2 - 9 Identifier: ISSN: 0920-5861
CoNE: /journals/resource/954925564669