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Title: High Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy: Detection of Adsorption Sites in Supported Metal Catalysts

Abstract

High energy resolution fluorescence detection (HERFD) X-ray adsorption spectroscopy (XAS) is demonstrated as a new tool to identify the geometry of metal adsorption sites and the orbitals involved in bonding. The type of CO adsorption site on a nanoparticular Pt-Al2O3 catalyst is determined. The orbitals involved in the Pt - CO bonding are identified using theoretical FEFF8.0 calculations. In situ application of HERFD XAS is applicable to a large number of catalytic systems and will provide fundamental insights in structure - performance relationships.

Authors:
 [1];  [2]; ;  [3];  [4];  [1];  [5]
  1. University of Southampton, School of Chemistry, Highfield, Southampton, SO17 1BJ (United Kingdom)
  2. Institute for chemical and bioengineering ETH Zurich (Switzerland)
  3. ESRF, Grenoble (France)
  4. Utrecht University, Utrecht (Netherlands)
  5. (United Kingdom)
Publication Date:
OSTI Identifier:
21054708
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 882; Journal Issue: 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644620; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ABSORPTION SPECTROSCOPY; ADSORPTION; ALUMINIUM OXIDES; CARBON MONOXIDE; CATALYSTS; CHEMICAL BONDS; COMPUTER CALCULATIONS; ENERGY RESOLUTION; F CODES; FLUORESCENCE; PLATINUM; X-RAY SPECTROSCOPY

Citation Formats

Tromp, Moniek, Bokhoven, Jeroen A. van, Safonova, Olga V., Glatzel, Pieter, Groot, Frank M. F. de, Evans, John, and Diamond Light Source, Didcot. High Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy: Detection of Adsorption Sites in Supported Metal Catalysts. United States: N. p., 2007. Web. doi:10.1063/1.2644620.
Tromp, Moniek, Bokhoven, Jeroen A. van, Safonova, Olga V., Glatzel, Pieter, Groot, Frank M. F. de, Evans, John, & Diamond Light Source, Didcot. High Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy: Detection of Adsorption Sites in Supported Metal Catalysts. United States. doi:10.1063/1.2644620.
Tromp, Moniek, Bokhoven, Jeroen A. van, Safonova, Olga V., Glatzel, Pieter, Groot, Frank M. F. de, Evans, John, and Diamond Light Source, Didcot. Fri . "High Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy: Detection of Adsorption Sites in Supported Metal Catalysts". United States. doi:10.1063/1.2644620.
@article{osti_21054708,
title = {High Energy Resolution Fluorescence Detection X-Ray Absorption Spectroscopy: Detection of Adsorption Sites in Supported Metal Catalysts},
author = {Tromp, Moniek and Bokhoven, Jeroen A. van and Safonova, Olga V. and Glatzel, Pieter and Groot, Frank M. F. de and Evans, John and Diamond Light Source, Didcot},
abstractNote = {High energy resolution fluorescence detection (HERFD) X-ray adsorption spectroscopy (XAS) is demonstrated as a new tool to identify the geometry of metal adsorption sites and the orbitals involved in bonding. The type of CO adsorption site on a nanoparticular Pt-Al2O3 catalyst is determined. The orbitals involved in the Pt - CO bonding are identified using theoretical FEFF8.0 calculations. In situ application of HERFD XAS is applicable to a large number of catalytic systems and will provide fundamental insights in structure - performance relationships.},
doi = {10.1063/1.2644620},
journal = {AIP Conference Proceedings},
number = 1,
volume = 882,
place = {United States},
year = {Fri Feb 02 00:00:00 EST 2007},
month = {Fri Feb 02 00:00:00 EST 2007}
}
  • Life-time-broadening reduction in high-energy-resolution fluorescence detected XAS produced spectra of unprecedented detail. Au L3 edge spectra of a Au/Al2O3 catalyst under various reaction conditions showed the interaction of oxygen with the gold particles on this catalyst. A reaction path on the gold particle in the oxidation of CO was established.
  • Cited by 1
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