Gashnikova, Daria ; Maurer, Florian ; Sauter, Eric ; Bernart, Sarah ; Jelic, Jelena ; Dolcet, Paolo ; Maliakkal, Carina B. ; Wang, Yuemin ; Wöll, Christof ; Studt, Felix ; Kübel, Christian ; Casapu, Maria ; Grunwaldt, Jan‐Dierk (2024)
Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO₂ Nano‐Islands.
In: Angewandte Chemie International Edition, 2024, 63 (35)
doi: 10.26083/tuprints-00028279
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
CeO₂‐supported noble metal clusters are attractive catalytic materials for several applications. However, their atomic dispersion under oxidizing reaction conditions often leads to catalyst deactivation. In this study, the noble metal cluster formation threshold is rationally adjusted by using a mixed CeO₂‐Al₂O₃ support. The preferential location of Pd on CeO₂ islands leads to a high local surface noble metal concentration and promotes the in situ formation of small Pd clusters at a rather low noble metal loading (0.5 wt %), which are shown to be the active species for CO conversion at low temperatures. As elucidated by complementary in situ/operando techniques, the spatial separation of CeO₂ islands on Al₂O₃ confines the mobility of Pd, preventing the full redispersion or the formation of larger noble metal particles and maintaining a high CO oxidation activity at low temperatures. In a broader perspective, this approach to more efficiently use the noble metal can be transferred to further systems and reactions in heterogeneous catalysis.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Gashnikova, Daria ; Maurer, Florian ; Sauter, Eric ; Bernart, Sarah ; Jelic, Jelena ; Dolcet, Paolo ; Maliakkal, Carina B. ; Wang, Yuemin ; Wöll, Christof ; Studt, Felix ; Kübel, Christian ; Casapu, Maria ; Grunwaldt, Jan‐Dierk |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO₂ Nano‐Islands |
| Sprache: | Englisch |
| Publikationsjahr: | 19 November 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 26 August 2024 |
| Ort der Erstveröffentlichung: | Weinheim |
| Verlag: | Wiley-VCH |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Angewandte Chemie International Edition |
| Jahrgang/Volume einer Zeitschrift: | 63 |
| (Heft-)Nummer: | 35 |
| Kollation: | 11 Seiten |
| DOI: | 10.26083/tuprints-00028279 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/28279 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | CeO₂‐supported noble metal clusters are attractive catalytic materials for several applications. However, their atomic dispersion under oxidizing reaction conditions often leads to catalyst deactivation. In this study, the noble metal cluster formation threshold is rationally adjusted by using a mixed CeO₂‐Al₂O₃ support. The preferential location of Pd on CeO₂ islands leads to a high local surface noble metal concentration and promotes the in situ formation of small Pd clusters at a rather low noble metal loading (0.5 wt %), which are shown to be the active species for CO conversion at low temperatures. As elucidated by complementary in situ/operando techniques, the spatial separation of CeO₂ islands on Al₂O₃ confines the mobility of Pd, preventing the full redispersion or the formation of larger noble metal particles and maintaining a high CO oxidation activity at low temperatures. In a broader perspective, this approach to more efficiently use the noble metal can be transferred to further systems and reactions in heterogeneous catalysis. |
| Freie Schlagworte: | ceria, cluster formation, noble metal confinement, operando, palladium |
| ID-Nummer: | Artikel-ID: e202413055 |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-282797 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 540 Chemie 600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > In-Situ Elektronenmikroskopie |
| Hinterlegungsdatum: | 19 Nov 2024 12:18 |
| Letzte Änderung: | 20 Nov 2024 13:05 |
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- Highly Active Oxidation Catalysts through Confining Pd Clusters on CeO₂ Nano‐Islands. (deposited 19 Nov 2024 12:18) [Gegenwärtig angezeigt]
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