The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Reversible Transformation of Pt Nanoparticles into Single Atoms inside High-Silica Chabazite Zeolite
Open accessAbstract
We report the encapsulation of platinum species in highly siliceous chabazite (CHA) crystallized in the presence of N,N,N -trimethyl-1-adamantammonium and a thiol-stabilized Pt complex. When compared to Pt/SiO 2 or Pt-containing Al-rich zeolites, the materials in this work show enhanced stability toward metal sintering in a variety of industrial conditions, including H 2, O 2, and H 2 O. Remarkably, temperatures in the range 650–750 °C can be reached without significant sintering of the noble metal. Detailed structural determinations by X-ray absorption spectroscopy and aberration-corrected high-angle annular dark-field scanning transmission electron microscopy demonstrate subtle control of the supported metal structures from ∼1 nm nanoparticles to site-isolated single Pt atoms via reversible interconversion of one species into another in reducing and oxidizing atmospheres. The combined used of microscopy and spectroscopy is critical to understand these surface-mediated transformations. When tested in hydrogenation reactions, Pt/CHA converts ethylene (∼80%) but not propylene under identical conditions, in contrast to Pt/SiO 2, which converts both at similar rates. These differences are attributed to the negligible diffusivity of propylene through the small-pore zeolite and provide final evidence of the metal encapsulation.
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Citations
Cites
Moliner, M., Martínez, C., & Corma, A. (2014) · Chemistry of Materials · doi:10.1021/cm4015095 · Cited by 311
Self-citationMartín, N., Moliner, M., & Corma, A. (2015) · Chemical Communications · doi:10.1039/c5cc02670a · Cited by 151
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Cited by
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Liu, L., & Corma, A. (2018) · Chemical Reviews · doi:10.1021/acs.chemrev.7b00776 · Cited by 4,777
Self-citationSingle-Atom Catalysts: Synthetic Strategies and Electrochemical Applications
Chen, Y., Ji, S., Chen, C., Peng, Q., Wang, D., & Li, Y. (2018) · Joule · doi:10.1016/j.joule.2018.06.019 · Cited by 2,258
Chemical Synthesis of Single Atomic Site Catalysts
Ji, S., Chen, Y., Wang, X., Zhang, Z., Wang, D., & Li, Y. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.9b00818 · Cited by 1,444
Single-Atom Catalysts across the Periodic Table
Kaiser, S. K., Chen, Z., Faust Akl, D., Mitchell, S., & Pérez-Ramírez, J. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00576 · Cited by 1,367
Well-Defined Materials for Heterogeneous Catalysis: From Nanoparticles to Isolated Single-Atom Sites
Li, Z., Ji, S., Liu, Y., Cao, X., Tian, S., Chen, Y., Niu, Z., & Li, Y. (2020) · Chemical Reviews · doi:10.1021/acs.chemrev.9b00311 · Cited by 1,245
Metadata
- Authors
- Moliner, M., Gabay, J. E., Kliewer, C. E., Carr, R. T., Guzman, J., Casty, G. L., Serna, P., & Corma, A.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-11-23
- Volume
- 138
- Issue
- 48
- Pages
- 15743-15750
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2555576741
- Cited by
- 461
- References
- 2
- FWCI
- 12.37
- Type
- journal article
- Language
- en
- Open access
- green
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