Self‐Stabilized Heterometallic Pair Sites for Selective Ethanol Dehydrogenation on Pt–Cr–Ag Alloy Catalysts
Year: 2025
Type: article
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 Pt x Cr x Ag 1‐2x ( 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.
Authors: Jason F. Weaver, Shuting Xiang, Jovenal Jamir, Ulrike Küst, Lisa Rämisch, Andrea Grespi, Harald Wallander, Johan Zetterberg, Steven Arias, Esteban L. Fornero, Prahlad K. Routh, Shengjie Zhang, John S. Miller, Rajeev Kumar Rai, Eric A. Stach, J. Anibal Boscoboinik, Matthew M. Montemore, E. Charles H. Sykes, Jan Knudsen, Jürgen Biener, Lindsay R. Merte, Anatoly I. Frenkel
Institutions: University of Florida, Stony Brook University, Lund University, NanoLund, Malmö University, Brookhaven National Laboratory, Center for Functional Nanomaterials, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Instituto de Desarrollo Tecnológico para la Industria Química, Tulane University, Lawrence Livermore National Laboratory, University of Pennsylvania, Tufts University, MAX IV Laboratory
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,510
Funders: National Science Foundation, U.S. Department of Energy, University of Pennsylvania, VINNOVA, Svenska Forskningsrådet Formas, Vetenskapsrådet, Office of Science, Materials Research Science and Engineering Center, Harvard University, Division of Materials Research, Division of Chemical, Bioengineering, Environmental, and Transport Systems, Division of Chemistry, Basic Energy Sciences, Lawrence Livermore National Laboratory, Brookhaven National Laboratory, SLAC National Accelerator Laboratory
Awards: G1051554911, G1088636562, G119611033, G1229526393, G1285306620, G1286251239, G129027128, Time-resolved catalysis and ambient pressure photoelectron spectroscopy, G1356433355, G14554683, G1461678227, G1521952760, G155958390, G1565419222, Materials Research Science and Engineering Center, G1847291448, G208125138, G2145270357, G2352061593, G2371548206, G241279073, G2567800894, G262532246, G2869079275, G303061748, G317939215, G3262563802, G357145406, G3682108237, G3728818118, G3857304228, Bifunctionality of Intermetallic Pd-In/Indium-Oxide Catalysts for CO2 Hydrogenation to Methanol, Off-equilibrium model catalysis studied in real time and at real conditions, G405461438, Materials Research Science and Engineering Centers (MRSEC) UPENN, G4235786860, G4404781368, INTEGRATED MESOSCALE ARCHITECTURES FOR SUSTAINABLE CATALYSIS (IMASC), G4473368111, G495301720, G498139845, G5096929151, MAX IV operations – Formas, G5224014036, G5229471624, Collaborative Research: Beyond the Single-Atom Paradigm: A Priori Design of Dual-Atom Alloy Active Sites for Efficient and Selective Chemical Conversions, G5557340235, G5570207115, G574795485, G5765906131, G584641232, NNCI: Mid-Atlantic Nanotechnology Hub (MANTH), G594270511, G6176141556, G6550344761, Collaborative Research: Beyond the Single-Atom Paradigm: A Priori Design of Dual-Atom Alloy Active Sites for Efficient and Selective Chemical Conversions, G6965541988, Combined techniques för catalysis and plasma catalysis, G712881263, G7283024673, G7463374569, Structure and reactivity of complex two-dimensional oxides under catalytic conditions, G7787043000, Collaborative Research: Designing Functional Bioligand Interfaces for Multifunctional Nanomaterials, MAX IV operations 2019-2021, G8275184211, G8382000481, INTEGRATED MESOSCALE ARCHITECTURES FOR SUSTAINABLE CATALYSIS (IMASC), G872144517, Hard X-ray spectroscopy for operando studies of model catalysts, G911061179, G969889393, G991281326
OpenAlex ID: W4415167571