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Dynamic three-dimensional migration of Pd single atom species of Pd/TiO2 single atom catalysts during CO oxidation

Projektbeschreibung

Die Auswirkungen der Migration einzelner Atome auf die katalytische Aktivität

Die Einzelatomkatalyse (SAC) stellt die Speerspitze der fortschrittlichen Katalyseforschung dar, bei der nachhaltigere heterogene Katalysemethoden gesucht werden, bei denen sich Katalysator und Reaktanten in unterschiedlichen Phasen befinden. Aufgrund ihrer hohen Oberflächenenergie befinden sich nicht alle einzelnen Atome einer SAC an der Oberfläche des Katalysatorträgers. Sie können dynamisch zwischen der Oberfläche und der Masse migrieren, wodurch sich die Anzahl der verfügbaren aktiven Stellen und damit die katalytische Leistung ändert. Unterstützt über die Marie-Skłodowska-Curie-Maßnahmen werden im Projekt DMPdSAC Methoden entwickelt, um die dynamische 3D-Migration einzelner Pd1/TiO2-Atome bei der CO-Oxidation zu analysieren und so die rationale Entwicklung von Hochleistungs-SAC voranzubringen.

Ziel

Heterogeneous catalysis has grown rapidly since the beginning of the twentieth century, and currently it plays a central role in modern industrial catalysis. Single-atom catalysts (SACs) have been recognized as one of the most active frontiers in heterogeneous catalysis, taking the advantage of maximum utilization of precious metals and their superior catalytic performance. SACs do not have static local coordination under reaction conditions, driven by their high surface energy. Understanding the dynamism of SACs under reaction conditions is therefore highly important. So far, all the dynamic process of SACs are all focused on the surface of the support. For the reduced metal oxide support, not all the single atoms (SA) are located on the surface, part of them substituted the metal from the bulk metal oxide support. Notably, the precious metal atoms could migrate dynamically between the bulk and surface of the support in response to certain reaction atmospheres. Such a three-dimensional dynamic process of SA could result in the direct change of active site numbers and the intrinsic catalytic performance of SA species, which could influence the catalytic activity significantly. However, such a process has barely been investigated due to the underestimate of their influence on catalytic activity and the limitation of operando and quantitative technologies. Thus, this project will focus on the dynamic three-dimensional migration of SA of Pd1/TiO2 during CO oxidation process. We aim to develop quantitative and operando methodology to analyze three-dimensional distribution of different Pd1 species, reveal how the dynamic process influences the active site numbers and the intrinsic catalytic activity of Pd1 species and establish the dynamic structure-activity relationship of Pd1/TiO2. The final aim is to provide guidelines for the design of high-performance SACs for a given catalytic process.

Wissenschaftliches Gebiet (EuroSciVoc)

Schlüsselbegriffe

Programm/Programme

Thema/Themen

Finanzierungsplan

HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European Fellowships

Alle im Rahmen dieses Finanzierungsinstruments finanzierten Projekte anzeigen

Aufforderung zur Vorschlagseinreichung

(öffnet in neuem Fenster) HORIZON-MSCA-2024-PF-01

Alle im Rahmen dieser Aufforderung zur Einreichung von Vorschlägen finanzierten Projekte anzeigen

Koordinator

TECHNISCHE UNIVERSITEIT EINDHOVEN
Netto-EU-Beitrag
€ 217 076,16
Adresse
GROENE LOPER 3
5612 AE Eindhoven
Niederlande
Region
Zuid-Nederland Noord-Brabant Zuidoost-Noord-Brabant
Aktivitätstyp
Higher or Secondary Education Establishments
Links
Gesamtkosten
Keine Daten