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In-situ Tracking of Pt Migration from Pt/Al2O3 to CeO2 on the Atomic and Reactor Scale - Raw data

Struzek, Samuel ORCID iD icon 1,2; Holtermann, Birger ORCID iD icon 3; Sharma, Shweta ORCID iD icon 2; Maurer, Florian ORCID iD icon 2; Jelic, Jelena ORCID iD icon 1; Zimina, Anna ORCID iD icon 1,2; Studt, Felix 1,2; Eggeler, Yolita ORCID iD icon 3; Grunwaldt, Jan-Dierk ORCID iD icon 1,2
1 Institut für Katalyseforschung und -technologie (IKFT), Karlsruher Institut für Technologie (KIT)
2 Institut für Technische Chemie und Polymerchemie (ITCP), Karlsruher Institut für Technologie (KIT)
3 Laboratorium für Elektronenmikroskopie (LEM), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

This file contains beamtime data regarding an experiment, where Pt migrated under oxidizing conditions from Pt/Al2O3 to spatially separated CeO2. Furthermore, DFT structures for fitting the recorded EXAFS of the Pt which migrated onto the CeO2 are provided. Finally, there are several light-offs from mixed Pt/Al2O3 + CeO2 powder which was subjected to the migration progress and afterwards tested in regard to its activity as well as TEM and EDX data.


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Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Technische Chemie und Polymerchemie (ITCP)
Laboratorium für Elektronenmikroskopie (LEM)
Publikationstyp Forschungsdaten
Publikationsdatum 28.01.2026
Erstellungsdatum 21.01.2026
Identifikator DOI: 10.35097/nw11yua6ek6t2nbf
KITopen-ID: 1000189809
Lizenz Creative Commons Namensnennung 4.0 International
Schlagwörter Migration, Heterogeneous catalysis, Pt, Al2O3, CeO2
Liesmich

This data is related to the publication 'In-situ Tracking of Pt Migration from Pt/Al2O3 to CeO2 on the Atomic and Reactor Scale'. There are 5 folders.

1) Mixed powders - catalytic testing:
The temperature dependent gas conversions of the mixed Pt/Al2O3 + CeO2 powder which was subject to Pt migration.
Related to section 'Pt migration on the molecular and grain size level from Pt/Al2O3 to adjacent CeO2' within the publication.

2.1) Migration between spatially separated beds - beamtime data:
Beamtime data, together with gas concentrations and temperature data.
Related to section 'Pt migration on the millimetre scale from Pt/Al2O3 to CeO2' within the publication.

2.2) DFT structures for EXAFS evaluation:
DFT models for evaluating the EXAFS from folder 2.1.
Related to section 'CeO2 sites for trapping gaseous PtO2' within the publication.

3) EDX Map:
The Map4_overview image shows the superimposed elemental maps for Pt, Ce and Al on the HAADF image, with indicated magnification, high voltage and scale bar. The Pt-Migration_800C_4.bcf file contains the raw EDX hypermap data recorded as an bcf-file with the software Esprit from the company Bruker.
Related to section 'Pt migration on the molecular and grain size level from Pt/Al2O3 to adjacent CeO2' within the publication.

4) TEM images
'14.48.06 Scanning Acquire_0_400C_calcined.tiff' shows STEM-HAADF raw image of the 400°C specimen, metadata is contained in the tiff file. '18.06.24 Scanning Acquire_0_800C_calcined.tiff' shows STEM-HAADF raw image of the 800°C specimen, metadata is contained in the tiff file.
Related to the supporting information (SI).
' within the publication)
Art der Forschungsdaten Dataset
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