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Intrinsic Ligand Effect Governing the Catalytic Activity of Pd Oxide Thin Films

Martin, Natalia LU ; Van den Bossche, Maxime; Hellman, Anders; Gronbeck, Henrik; Hakanoglu, Can; Gustafson, Johan LU ; Blomberg, Sara LU ; Johansson, Niclas LU ; Liu, Zhi and Axnanda, Stephanus, et al. (2014) In ACS Catalysis 4(10). p.3330-3334
Abstract
High-pressure X-ray photoelectron spectroscopy, mass spectrometry, and density functional theory calculations have been combined to study methane oxidation over Pd(100). The measurements reveal a high activity when a two-layer PdO(101) oriented film is formed. Although a one-layer PdO(101) film exhibits a similar surface structure, no or very little activity is observed. The calculations show that the presence of an oxygen atom directly below the coordinatively unsaturated Pd atom in the two-layer PdO(101) film is crucial for efficient methane dissociation, demonstrating a ligand effect that may be broadly important in determining the catalytic properties of oxide thin films.
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organization
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Contribution to journal
publication status
published
subject
keywords
heterogeneous catalysis, methane oxidation, palladium, PdO, (root 5 x, root 5)
in
ACS Catalysis
volume
4
issue
10
pages
3330 - 3334
publisher
The American Chemical Society
external identifiers
  • wos:000345735200003
  • scopus:84907828257
ISSN
2155-5435
DOI
10.1021/cs5010163
language
English
LU publication?
yes
id
cdff6454-057d-4f08-8cc3-b86406a33765 (old id 4965721)
date added to LUP
2015-01-29 13:19:23
date last changed
2017-11-12 03:49:17
@article{cdff6454-057d-4f08-8cc3-b86406a33765,
  abstract     = {High-pressure X-ray photoelectron spectroscopy, mass spectrometry, and density functional theory calculations have been combined to study methane oxidation over Pd(100). The measurements reveal a high activity when a two-layer PdO(101) oriented film is formed. Although a one-layer PdO(101) film exhibits a similar surface structure, no or very little activity is observed. The calculations show that the presence of an oxygen atom directly below the coordinatively unsaturated Pd atom in the two-layer PdO(101) film is crucial for efficient methane dissociation, demonstrating a ligand effect that may be broadly important in determining the catalytic properties of oxide thin films.},
  author       = {Martin, Natalia and Van den Bossche, Maxime and Hellman, Anders and Gronbeck, Henrik and Hakanoglu, Can and Gustafson, Johan and Blomberg, Sara and Johansson, Niclas and Liu, Zhi and Axnanda, Stephanus and Weaver, Jason F. and Lundgren, Edvin},
  issn         = {2155-5435},
  keyword      = {heterogeneous catalysis,methane oxidation,palladium,PdO,(root 5 x,root 5)},
  language     = {eng},
  number       = {10},
  pages        = {3330--3334},
  publisher    = {The American Chemical Society},
  series       = {ACS Catalysis},
  title        = {Intrinsic Ligand Effect Governing the Catalytic Activity of Pd Oxide Thin Films},
  url          = {http://dx.doi.org/10.1021/cs5010163},
  volume       = {4},
  year         = {2014},
}