Communications : Suppression of sintering of size-selected Pd clusters under realistic reaction conditions for catalysis.
Abstract
The stability of model catalysts based on size-selected Pd clusters supported on graphite surfaces has been explored under realistic conditions for catalytic oxidation of methane at mild temperatures. The experimental results show that aggregated films of nanoparticles are highly unstable, but clusters pinned to the surface in the submonolayer coverage regime are much more stable against sintering. The degree of sintering of the pinned clusters, which does occur, proceeds by the release of clusters from their pinning sites. The suppression of sintering depends on the cluster deposition energy with respect to the pinning threshold.
- Authors:
-
- Center for Nanoscale Materials
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); Univ. of Birmingham
- OSTI Identifier:
- 1013331
- Report Number(s):
- ANL/MSD/JA-69492
Journal ID: 0021-9606; TRN: US201110%%587
- DOE Contract Number:
- DE-AC02-06CH11357
- Resource Type:
- Journal Article
- Journal Name:
- J. Chem. Phys.
- Additional Journal Information:
- Journal Volume: 134; Journal Issue: 14 ; Apr. 8, 2011
- Country of Publication:
- United States
- Language:
- ENGLISH
- Subject:
- 03 NATURAL GAS; CATALYSIS; CATALYSTS; COMMUNICATIONS; DEPOSITION; GRAPHITE; METHANE; OXIDATION; SINTERING; STABILITY
Citation Formats
Yin, F, Lee, S, Abdela, A, Vajda, S, Palmer, R E, MSD), XSD), Univ. of Birmingham), and Yale Univ.). Communications : Suppression of sintering of size-selected Pd clusters under realistic reaction conditions for catalysis.. United States: N. p., 2011.
Web. doi:10.1063/1.3575195.
Yin, F, Lee, S, Abdela, A, Vajda, S, Palmer, R E, MSD), XSD), Univ. of Birmingham), & Yale Univ.). Communications : Suppression of sintering of size-selected Pd clusters under realistic reaction conditions for catalysis.. United States. https://doi.org/10.1063/1.3575195
Yin, F, Lee, S, Abdela, A, Vajda, S, Palmer, R E, MSD), XSD), Univ. of Birmingham), and Yale Univ.). 2011.
"Communications : Suppression of sintering of size-selected Pd clusters under realistic reaction conditions for catalysis.". United States. https://doi.org/10.1063/1.3575195.
@article{osti_1013331,
title = {Communications : Suppression of sintering of size-selected Pd clusters under realistic reaction conditions for catalysis.},
author = {Yin, F and Lee, S and Abdela, A and Vajda, S and Palmer, R E and MSD) and XSD) and Univ. of Birmingham) and Yale Univ.)},
abstractNote = {The stability of model catalysts based on size-selected Pd clusters supported on graphite surfaces has been explored under realistic conditions for catalytic oxidation of methane at mild temperatures. The experimental results show that aggregated films of nanoparticles are highly unstable, but clusters pinned to the surface in the submonolayer coverage regime are much more stable against sintering. The degree of sintering of the pinned clusters, which does occur, proceeds by the release of clusters from their pinning sites. The suppression of sintering depends on the cluster deposition energy with respect to the pinning threshold.},
doi = {10.1063/1.3575195},
url = {https://www.osti.gov/biblio/1013331},
journal = {J. Chem. Phys.},
number = 14 ; Apr. 8, 2011,
volume = 134,
place = {United States},
year = {Fri Apr 08 00:00:00 EDT 2011},
month = {Fri Apr 08 00:00:00 EDT 2011}
}
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