Pd-Pt Catalysts on Fluorinated Alumina Support Studied by X-Ray Absorption Fine Structure

Journal Article · Fri Feb 02 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2644641· OSTI ID:21054727

Wensheng, Yan; Zhongrui, Li; Zheng, Wei; Shiqiang, Wei ^[1]

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1. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China)

A series of bi-metallic Pd-Pt catalysts supported on both pristine and fluorinated alumina supports were investigated with x-ray absorption spectroscopy. It was found that Pd and Pt form small alloy particles on the pristine alumina support; the composition and the cluster size of the PdPt bimetallic alloys, and the electronic properties of the metals were significantly altered on the fluorinated support. The remarkable increase in sulfur tolerance of the PdPt metallic clusters supported on the fluorine pretreated alumina can be attributed to an electronic depletion of the metals, large particle size and direct participation of the acid sites in the reaction.

• OSTI ID: 21054727
• Journal Information: AIP Conference Proceedings, Vol. 882, Issue 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644641; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
ALUMINIUM OXIDES
CATALYSTS
ELECTRONIC STRUCTURE
FINE STRUCTURE
PALLADIUM
PALLADIUM ALLOYS
PARTICLE SIZE
PARTICLES
PLATINUM
PLATINUM ALLOYS
X RADIATION
X-RAY SPECTRA
X-RAY SPECTROSCOPY