DOI: 10.1063/1.441544. Site distribution studies of Rh supported on Al2O3

Site distribution studies of Rh supported on Al2O3—An infrared study of chemisorbed CO

10.1063/1.441544

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

Using infrared spectroscopy, chemisorbed CO has been employed as a surface probe to observe differences in Rh site distributions on Al2O3-supported Rh. It has been found that higher loadings of Rh lead to Rh site distributions resembling those found on Rh(111) single crystals, whereas low Rh loadings produce isolated Rh sites preferentially. The isolated Rh sites yield infrared spectra characteristic of a species Rh(CO)2. Chemisorption of oxygen onto the CO-covered surface effectively eliminates crystalline Rh sites, leaving only the isolated Rh sites which maintain their bonding to CO as seen by infrared spectroscopy. Estimates of the infrared extinction coefficient for Rh(CO)2 have been made. The results are consistent with data from other laboratories which indicate that the Rh is in a Rhd+ oxidation state.

Bibliography

Cavanagh, R. R., & Yates, J. T. (1981). Site distribution studies of Rh supported on Al2O3âAn infrared study of chemisorbed CO. The Journal of Chemical Physics, 74(7), 4150â4155.

Authors 2

R. R. Cavanagh (first)
J. T. Yates (additional)

References 40 Referenced 162

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{'key': '2024020920294953800_r2'}
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Dates

Type	When
Created	22 years, 5 months ago (Feb. 28, 2003, 10:46 a.m.)
Deposited	1 year, 6 months ago (Feb. 9, 2024, 5:30 p.m.)
Indexed	3 weeks, 3 days ago (Aug. 2, 2025, 12:43 a.m.)
Issued	44 years, 4 months ago (April 1, 1981)
Published	44 years, 4 months ago (April 1, 1981)
Published Print	44 years, 4 months ago (April 1, 1981)

Funders 0

None

BibTeX

@article{Cavanagh_1981, title={Site distribution studies of Rh supported on Al2O3—An infrared study of chemisorbed CO}, volume={74}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.441544}, DOI={10.1063/1.441544}, number={7}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Cavanagh, R. R. and Yates, J. T.}, year={1981}, month=apr, pages={4150–4155} }

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