DOI: 10.1063/1.445006. Structure of bimetallic clusters. Extended x-ray absorption fine structure (EXAFS) studies of Ir

Structure of bimetallic clusters. Extended x-ray absorption fine structure (EXAFS) studies of Ir–Rh clusters

10.1063/1.445006

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

The extended x-ray absorption fine structures (EXAFS) associated with the LIII absorption edge of iridium and the K absorption edge of rhodium were investigated for catalysts containing bimetallic clusters of these elements dispersed on silica or alumina. The catalysts contained 1 wt.% iridium and 0.5 wt.% rhodium, which corresponds to an Ir/Rh atomic ratio close to 1. From the EXAFS data, it is concluded that the rhodium concentration in the surface region of the iridium–rhodium clusters is greater than it is in the interior. The EXAFS data also indicate that the iridium–rhodium clusters are more highly dispersed on alumina than on silica.

Bibliography

Meitzner, G., Via, G. H., Lytle, F. W., & Sinfelt, J. H. (1983). Structure of bimetallic clusters. Extended x-ray absorption fine structure (EXAFS) studies of IrâRh clusters. The Journal of Chemical Physics, 78(5), 2533â2541.

Authors 4

G. Meitzner (first)
G. H. Via (additional)
F. W. Lytle (additional)
J. H. Sinfelt (additional)

References 24 Referenced 31

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{'key': '2024020923125670200_r4'}
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{'key': '2024020923125670200_r6', 'first-page': '519', 'volume': '71', 'year': '1981', 'journal-title': 'J. Chem. Soc. Faraday Trans. 1'} / J. Chem. Soc. Faraday Trans. 1 (1981)
{'key': '2024020923125670200_r7'}
10.1016/0021-9517(79)90082-4 / J. Catal. (1979)
10.1016/0021-9517(80)90428-5 / J. Catal. (1980)
10.1103/PhysRevLett.34.1361 / Phys. Rev. Lett. (1975)
10.1063/1.437376 / J. Chem. Phys. (1979)
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Dates

Type	When
Created	22 years, 5 months ago (Feb. 28, 2003, 11:47 a.m.)
Deposited	1 year, 6 months ago (Feb. 9, 2024, 7:45 p.m.)
Indexed	1 year, 5 months ago (March 8, 2024, 7:44 p.m.)
Issued	42 years, 5 months ago (March 1, 1983)
Published	42 years, 5 months ago (March 1, 1983)
Published Print	42 years, 5 months ago (March 1, 1983)

Funders 0

None

BibTeX

@article{Meitzner_1983, title={Structure of bimetallic clusters. Extended x-ray absorption fine structure (EXAFS) studies of Ir–Rh clusters}, volume={78}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.445006}, DOI={10.1063/1.445006}, number={5}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Meitzner, G. and Via, G. H. and Lytle, F. W. and Sinfelt, J. H.}, year={1983}, month=mar, pages={2533–2541} }

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