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CO Oxidation over AuPd(100) from Ultrahigh Vacuum to Near-Atmospheric Pressures: The Critical Role of Contiguous Pd Atoms
Abstract
It is demonstrated that gas-phase CO pressure higher than approximately 0.1 Torr is required to segregate a sufficient amount of Pd to the surface of a well-annealed AuPd(100) sample to form contiguous Pd sites. These contiguous sites are critical in dissociating O(2) for low-temperature CO oxidation, where CO chemisorbed on Au sites clearly participates in the reaction at temperatures below approximately 400 K. Measured reaction kinetics demonstrates that the higher reaction rate is achieved on a surface with higher coverages of contiguous Pd sites.
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Cited by
Hannagan, R. T., Giannakakis, G., Flytzani-Stephanopoulos, M., & Sykes, E. C. H. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00078 · Cited by 1,017
Gao, F., & Goodman, D. W. (2012) · Chemical Society Reviews · doi:10.1039/c2cs35160a · Cited by 580
Self-citationBiphasic Pd−Au Alloy Catalyst for Low-Temperature CO Oxidation
Xu, J., White, T., Li, P., He, C., Yu, J., Yuan, W., & Han, Y.-F. (2010) · Journal of the American Chemical Society · doi:10.1021/ja102617r · Cited by 388
Ouyang, M., Papanikolaou, K. G., Boubnov, A., Hoffman, A. S., Giannakakis, G., Bare, S. R., Stamatakis, M., Flytzani-Stephanopoulos, M., & Sykes, E. C. H. (2021) · Nature Communications · doi:10.1038/s41467-021-21555-z · Cited by 187
Metadata
- Authors
- Gao, F., Wang, Y., & Goodman, D. W.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2009-04-02
- Volume
- 131
- Issue
- 16
- Pages
- 5734-5735
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2087076159
- Cited by
- 246
- References
- 0
- FWCI
- 7.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- Gao, F., Wang, Y., & Goodman, D. W. (2009). CO Oxidation over AuPd(100) from Ultrahigh Vacuum to Near-Atmospheric Pressures: The Critical Role of Contiguous Pd Atoms. Journal of the American Chemical Society. https://doi.org/10.1021/ja9008437
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