The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.
Catalyst deactivation via decomposition into single atoms and the role of metal loading
Open accessAbstract
In the high-temperature environments needed to perform catalytic processes, supported precious metal catalysts lose their activity severely over time. Generally, loss of catalytic activity is attributed to nanoparticle sintering or processes by which larger particles grow at the expense of smaller ones. Here, by independently controlling particle size and particle loading using colloidal nanocrystals, we reveal the opposite process as an alternative deactivation mechanism: nanoparticles rapidly lose activity for methane oxidation by high-temperature decomposition into inactive single atoms. This deactivation route is remarkably fast, leading to severe loss of activity in as little as 10 min. Importantly, this deactivation pathway is strongly dependent on particle density and the concentration of support defect sites. A quantitative statistical model explains how, for certain reactions, higher particle densities can lead to more stable catalysts.Traditional modes of catalyst deactivation such as Ostwald ripening and particle migration and coalescence eventually lead to sintering and particle growth. Now, Cargnello and colleagues identify loading-dependent particle decomposition into single atoms as an important deactivation mechanism during methane combustion on colloidal Pd nanocrystals.
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Induced activation of the commercial Cu/ZnO/Al2O3 catalyst for the steam reforming of methanol
Li, D., Xu, F., Tang, X., Dai, S., Pu, T., Liu, X., Tian, P., Xuan, F., Xu, Z., Wachs, I. E., et al. (2022) · Nature Catalysis · doi:10.1038/s41929-021-00729-4 · Cited by 519
Nanoscale engineering of catalytic materials for sustainable technologies
Mitchell, S., Qin, R., Zheng, N., & Pérez-Ramírez, J. (2021) · Nature Nanotechnology · doi:10.1038/s41565-020-00799-8 · Cited by 444
Zaera, F. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.1c00905 · Cited by 425
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
Self-citationSandbeck, D. J. S., Secher, N. M., Speck, F. D., Sørensen, J. E., Kibsgaard, J., Chorkendorff, I., & Cherevko, S. (2020) · ACS Catalysis · doi:10.1021/acscatal.0c00779 · Cited by 121
Metadata
- Authors
- Goodman, E. D., Johnston-Peck, A. C., Dietze, E. M., Wrasman, C. J., Hoffman, A. S., Abild-Pedersen, F., Bare, S. R., Plessow, P. N., & Cargnello, M.
- Venue
- Nature Catalysis
- Published
- 2019-08-12
- Volume
- 2
- Issue
- 9
- Pages
- 748-755
- ISSN
- 2520-1158 (ISSN-L)
- OpenAlex
- W2967253617
- Cited by
- 287
- References
- 29
- FWCI
- 10.25
- Type
- journal article
- Language
- en
- Open access
- green
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