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dc.contributor.author
Zhao, Yutong
dc.contributor.author
Wang, Lizhuo
dc.contributor.author
Kochubei, Alena
dc.contributor.author
Yang, Wenjie
dc.contributor.author
Xu, Haimei
dc.contributor.author
Luo, Yongming
dc.contributor.author
Baiker, Alfons
dc.contributor.author
Huang, Jun
dc.contributor.author
Wang, Zichun
dc.contributor.author
Jiang, Yijiao
dc.date.accessioned
2021-04-19T12:35:05Z
dc.date.available
2021-04-03T02:55:16Z
dc.date.available
2021-04-19T12:35:05Z
dc.date.issued
2021-03-18
dc.identifier.issn
1948-7185
dc.identifier.other
10.1021/acs.jpclett.1c00139
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/477377
dc.description.abstract
Alumina and its mixed oxides are popular industrial supports for emerging supported metal catalysts. Pentacoordinated Al (AlV) species are identified as key surface sites for anchoring and stabilizing metal single-site catalysts; however, AlV is rare in conventional amorphous silica–alumina (ASA). Recently, we have developed AlV-enriched ASA, which was applied as a support for the synthesis of Pt single-site catalysts in this work. Each preparation stage and the interaction between Pt and surface Al species were explored by 1H and 27Al solid-state nuclear magnetic resonance spectroscopy, and the formation of the dominant Pt single sites on the surface of AlV-enriched ASA was confirmed by high-angle annular dark-field imaging scanning transmission electron microscopy and energy dispersive spectroscopy line scanning. On the surface of supports without a significant AlV population (Pt/Al2O3 and Pt/SiO2), mainly Pt nanoparticles were formed. This indicates that AlV contributes to the strong metal–support interaction to stabilize the Pt single sites on Pt/ASA, which was characterized by diffuse reflectance infrared Fourier transform spectroscopy combined with CO adsorption, X-ray photoelectron spectroscopy, and electron energy loss spectroscopy. Pt single sites supported on AlV-enriched ASA exhibit excellent chemoselectivity in the hydrogenation of C═O groups, affording 2–3-fold higher yields compared to those of Pt nanoparticles supported on Al2O3 and SiO2.
en_US
dc.language.iso
en
en_US
dc.publisher
American Chemical Society
en_US
dc.title
Formation and Location of Pt Single Sites Induced by Pentacoordinated Al Species on Amorphous Silica–Alumina
en_US
dc.type
Journal Article
dc.date.published
2021-03-08
ethz.journal.title
The Journal of Physical Chemistry Letters
ethz.journal.volume
12
en_US
ethz.journal.issue
10
en_US
ethz.journal.abbreviated
J. Phys. Chem. Lett.
ethz.pages.start
2536
en_US
ethz.pages.end
2546
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2021-04-03T02:55:24Z
ethz.source
SCOPUS
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-04-19T12:35:16Z
ethz.rosetta.lastUpdated
2022-03-29T06:38:50Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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