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dc.contributor.author
Bauer, Tanja
dc.contributor.author
Maisel, Sven
dc.contributor.author
Blaumeiser, Dominik
dc.contributor.author
Vecchietti, María Julia
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dc.contributor.author
Taccardi, Nicola
dc.contributor.author
Wasserscheid, Peter
dc.contributor.author
Bonivardi, Adrian Lionel
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dc.contributor.author
Görling, Andreas
dc.contributor.author
Libuda, Jörg
dc.date.available
2020-05-19T22:28:50Z
dc.date.issued
2019-04
dc.identifier.citation
Bauer, Tanja; Maisel, Sven; Blaumeiser, Dominik; Vecchietti, María Julia; Taccardi, Nicola; et al.; Operando DRIFTS and DFT Study of Propane Dehydrogenation over Solid- and Liquid-Supported GaxPty Catalysts; American Chemical Society; ACS Catalysis; 9; 4; 4-2019; 2842-2853
dc.identifier.issn
2155-5435
dc.identifier.uri
http://hdl.handle.net/11336/105523
dc.description.abstract
Supported catalytically active liquid metal solutions (SCALMS) represent a class of catalytic materials that have only recently been developed, but have already proven to be highly active, e.g., for dehydrogenation reactions. Previous studies attributed the catalytic activity to isolated noble metal atoms at the surface of a liquid and inert Ga matrix. In this study, we apply diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) with CO as a probe molecule to Ga/Al2O3, Pt/Al2O3, and Ga37Pt/Al2O3 catalysts, to investigate in detail the nature of the active Pt species. Comparison of CO adsorption on Pt/Al2O3 and Ga37Pt/Al2O3 shows that isolated Pt atoms are, indeed, present at the surface of the liquid SCALMS. Combining DRIFTS with online gas chromatography (GC), we investigated the Ga/Al2O3, Pt/Al2O3, and Ga37Pt/Al2O3 systems under operando conditions during propane dehydrogenation in CO/propane and in Ar/propane. We find that the Pt/Al2O3 sample is rapidly poisoned by CO adsorption and coke, whereas propane dehydrogenation over Ga37Pt/Al2O3 SCALMS leads to higher conversion with no indication of poisoning effects. We show under operando conditions that isolated Pt atoms are present at the surface of SCALMS during the dehydrogenation reaction. IR spectra and density-functional theory (DFT) suggest that both the Ga matrix and the presence of coadsorbates alter the electronic properties of the surface Pt species.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Chemical Society
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DEHYDROGENATION
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DFT
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DRIFTS
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OPERANDO
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SCALMS
dc.subject.classification
Ingeniería de Procesos Químicos
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dc.subject.classification
Ingeniería Química
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Operando DRIFTS and DFT Study of Propane Dehydrogenation over Solid- and Liquid-Supported GaxPty Catalysts
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-05-19T19:49:45Z
dc.journal.volume
9
dc.journal.number
4
dc.journal.pagination
2842-2853
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Bauer, Tanja. Universitat Erlangen-Nuremberg; Alemania
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Fil: Maisel, Sven. Universitat Erlangen-Nuremberg; Alemania
dc.description.fil
Fil: Blaumeiser, Dominik. Universitat Erlangen-Nuremberg; Alemania
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Fil: Vecchietti, María Julia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
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Fil: Taccardi, Nicola. Universitat Erlangen-Nuremberg; Alemania
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Fil: Wasserscheid, Peter. Universitat Erlangen-Nuremberg; Alemania
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Fil: Bonivardi, Adrian Lionel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: Görling, Andreas. Universitat Erlangen-Nuremberg; Alemania
dc.description.fil
Fil: Libuda, Jörg. Universitat Erlangen-Nuremberg; Alemania
dc.journal.title
ACS Catalysis
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1021/acscatal.8b04578
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