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Self-Stabilized Heterometallic Pair Sites for Selective Ethanol Dehydrogenation on Pt–Cr–Ag Alloy Catalysts

Weaver, Jason F. ; Xiang, Shuting ; Jamir, Jovenal ; Küst, Ulrike LU orcid ; Rämisch, Lisa LU ; Grespi, Andrea LU orcid ; Wallander, Harald LU ; Zetterberg, Johan LU orcid ; Arias, Steven and Fornero, Esteban L. , et al. (2025) In Angewandte Chemie - International Edition 64(49).
Abstract

Self-stabilized, heterometallic pair-sites can enable fine-tuning of catalytic functionality while also mitigating dynamic structural changes that degrade catalytic performance. This study demonstrates the development and characterization of trimetallic PtxCrxAg1-2x (x ≤ 0.1) alloys with active Pt–Cr pair-ensembles for non-oxidative ethanol dehydrogenation, leveraging predictions that favorable bonding stabilizes Pt–Cr pairs diluted in Ag. Operando X-ray absorption spectroscopy confirms the preferential formation and stability of Pt–Cr pairings dispersed throughout the Ag matrix, and ambient-pressure X-ray photoelectron spectroscopy shows that Pt–Cr sites have significant activity for ethanol... (More)

Self-stabilized, heterometallic pair-sites can enable fine-tuning of catalytic functionality while also mitigating dynamic structural changes that degrade catalytic performance. This study demonstrates the development and characterization of trimetallic PtxCrxAg1-2x (x ≤ 0.1) alloys with active Pt–Cr pair-ensembles for non-oxidative ethanol dehydrogenation, leveraging predictions that favorable bonding stabilizes Pt–Cr pairs diluted in Ag. Operando X-ray absorption spectroscopy confirms the preferential formation and stability of Pt–Cr pairings dispersed throughout the Ag matrix, and ambient-pressure X-ray photoelectron spectroscopy shows that Pt–Cr sites have significant activity for ethanol dehydrogenation, while suppressing reaction processes that deactivate binary Pt–Ag and Cr–Ag alloys. This work demonstrates that stabilizing heterometallic pair sites within trimetallic alloys provides a new avenue for designing catalysts with discrete active sites that are durable and highly selective.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Catalyst selectivity, Catalyst stability, Dual atom alloy, Ethanol dehydrogenation, Operando spectroscopy
in
Angewandte Chemie - International Edition
volume
64
issue
49
article number
e202513844
publisher
John Wiley & Sons Inc.
external identifiers
  • scopus:105019100690
  • pmid:41084940
ISSN
1433-7851
DOI
10.1002/anie.202513844
language
English
LU publication?
yes
additional info
Publisher Copyright: © 2025 The Author(s). Angewandte Chemie International Edition published by Wiley-VCH GmbH.
id
88e7ce39-e705-42be-a1d6-d91657b8d8d1
date added to LUP
2026-01-19 15:26:56
date last changed
2026-01-20 13:17:42
@article{88e7ce39-e705-42be-a1d6-d91657b8d8d1,
  abstract     = {{<p>Self-stabilized, heterometallic pair-sites can enable fine-tuning of catalytic functionality while also mitigating dynamic structural changes that degrade catalytic performance. This study demonstrates the development and characterization of trimetallic Pt<sub>x</sub>Cr<sub>x</sub>Ag<sub>1-2x</sub> (x ≤ 0.1) alloys with active Pt–Cr pair-ensembles for non-oxidative ethanol dehydrogenation, leveraging predictions that favorable bonding stabilizes Pt–Cr pairs diluted in Ag. Operando X-ray absorption spectroscopy confirms the preferential formation and stability of Pt–Cr pairings dispersed throughout the Ag matrix, and ambient-pressure X-ray photoelectron spectroscopy shows that Pt–Cr sites have significant activity for ethanol dehydrogenation, while suppressing reaction processes that deactivate binary Pt–Ag and Cr–Ag alloys. This work demonstrates that stabilizing heterometallic pair sites within trimetallic alloys provides a new avenue for designing catalysts with discrete active sites that are durable and highly selective.</p>}},
  author       = {{Weaver, Jason F. and Xiang, Shuting and Jamir, Jovenal and Küst, Ulrike and Rämisch, Lisa and Grespi, Andrea and Wallander, Harald and Zetterberg, Johan and Arias, Steven and Fornero, Esteban L. and Routh, Prahlad K. and Zhang, Shengjie and Miller, John S. and Rai, Rajeev Kumar and Stach, Eric A. and Boscoboinik, J. Anibal and Montemore, Matthew M. and Sykes, E. Charles H. and Knudsen, Jan and Biener, Jürgen and Merte, Lindsay R. and Frenkel, Anatoly I.}},
  issn         = {{1433-7851}},
  keywords     = {{Catalyst selectivity; Catalyst stability; Dual atom alloy; Ethanol dehydrogenation; Operando spectroscopy}},
  language     = {{eng}},
  month        = {{12}},
  number       = {{49}},
  publisher    = {{John Wiley & Sons Inc.}},
  series       = {{Angewandte Chemie - International Edition}},
  title        = {{Self-Stabilized Heterometallic Pair Sites for Selective Ethanol Dehydrogenation on Pt–Cr–Ag Alloy Catalysts}},
  url          = {{http://dx.doi.org/10.1002/anie.202513844}},
  doi          = {{10.1002/anie.202513844}},
  volume       = {{64}},
  year         = {{2025}},
}