Characterization of Pt particle interaction with L-zeolite by X-ray absorption spectroscopy: Binding energy shifts, X-ray absorption near-edge structure, and extended X-ray absorption fine structure

Brian J. McHugh, Gustavo Larsen, Gary L. Haller

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Abstract

We have used X-ray absorption to measure the binding energy, X-ray absorption near-edge structure (XANES), and extended X-ray absorption fine structure (EXAFS) of Pt particles in L-zeolite saturated with H2 at room temperature and after desorption of H2 in He. The desorption of H2 causes the particles to disorder or perhaps breakup such that the coherence required for EXAFS is lost. The shift (with respect to bulk metal) of the binding energy of the Pt in the zeolite, not stabilized by chemisorbed H2, suggests an interaction with the zeolite support (and may reflect electronic charge transfer to the Pt).

Original languageEnglish (US)
Pages (from-to)8621-8624
Number of pages4
JournalJournal of Physical Chemistry
Volume94
Issue number24
StatePublished - Dec 1 1990

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Zeolites
X ray absorption spectroscopy
Particle interactions
X ray absorption
particle interactions
Binding energy
absorption spectroscopy
binding energy
fine structure
shift
Desorption
x rays
desorption
Charge transfer
Metals
charge transfer
disorders
causes
room temperature
electronics

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

Cite this

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abstract = "We have used X-ray absorption to measure the binding energy, X-ray absorption near-edge structure (XANES), and extended X-ray absorption fine structure (EXAFS) of Pt particles in L-zeolite saturated with H2 at room temperature and after desorption of H2 in He. The desorption of H2 causes the particles to disorder or perhaps breakup such that the coherence required for EXAFS is lost. The shift (with respect to bulk metal) of the binding energy of the Pt in the zeolite, not stabilized by chemisorbed H2, suggests an interaction with the zeolite support (and may reflect electronic charge transfer to the Pt).",
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T1 - Characterization of Pt particle interaction with L-zeolite by X-ray absorption spectroscopy

T2 - Binding energy shifts, X-ray absorption near-edge structure, and extended X-ray absorption fine structure

AU - McHugh, Brian J.

AU - Larsen, Gustavo

AU - Haller, Gary L.

PY - 1990/12/1

Y1 - 1990/12/1

N2 - We have used X-ray absorption to measure the binding energy, X-ray absorption near-edge structure (XANES), and extended X-ray absorption fine structure (EXAFS) of Pt particles in L-zeolite saturated with H2 at room temperature and after desorption of H2 in He. The desorption of H2 causes the particles to disorder or perhaps breakup such that the coherence required for EXAFS is lost. The shift (with respect to bulk metal) of the binding energy of the Pt in the zeolite, not stabilized by chemisorbed H2, suggests an interaction with the zeolite support (and may reflect electronic charge transfer to the Pt).

AB - We have used X-ray absorption to measure the binding energy, X-ray absorption near-edge structure (XANES), and extended X-ray absorption fine structure (EXAFS) of Pt particles in L-zeolite saturated with H2 at room temperature and after desorption of H2 in He. The desorption of H2 causes the particles to disorder or perhaps breakup such that the coherence required for EXAFS is lost. The shift (with respect to bulk metal) of the binding energy of the Pt in the zeolite, not stabilized by chemisorbed H2, suggests an interaction with the zeolite support (and may reflect electronic charge transfer to the Pt).

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