<div class="csl-bib-body">
<div class="csl-entry">Zeininger, J. (2022, September 8). <i>Correlative in situ microscopy of hydrogen oxidation on rhodium: from the meso- to the nanoscale</i> [Conference Presentation]. DPG-Tagung der Sektion Kondensierte Materie, Campus der Universität Regensburg, Germany.</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/136396
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dc.description.abstract
Catalytic surface reactions, such as CO oxidation, may produce a variety of spatio-temporal effects on the catalyst surface. To reveal the mechanisms behind such spatio-temporal effects, it is advantageous to apply multiple techniques to the same samples, particularly at different length scales. In other research areas than catalysis this idea has led to the correlative microscopy approach. In catalysis, this approach is, if at all, used for sample characterization, often in two separate setups. In the present contribution, the correlative microscopy approach has been applied in situ to the catalytic hydrogen oxidation on rhodium to reveal the mechanism of multifrequential kinetic oscillations, a novel effect recently detected in this reaction. Such oscillations were first observed on a polycrystalline Rh foil, where the reaction oscillated in a self-sustained way between the states of high and low activity (a known behavior), but with different frequencies on adjacent domains (a new and unexpected behavior). Later on, such an effect was also observed on the nanofacets of a Rh tip modeling a single catalytic particle. Such behavior contradicts previous observations and expectations based on the known spatial coupling mechanisms and was never observed before, for any surface reaction.
en
dc.language.iso
en
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dc.subject
microscopy
en
dc.subject
hydrogen
en
dc.subject
oxidation
en
dc.subject
nanoscale
en
dc.subject
rhodium
en
dc.title
Correlative in situ microscopy of hydrogen oxidation on rhodium: from the meso- to the nanoscale
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.type.category
Conference Presentation
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tuw.publication.invited
invited
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tuw.researchTopic.id
M2
-
tuw.researchTopic.id
M1
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tuw.researchTopic.id
C6
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.name
Surfaces and Interfaces
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tuw.researchTopic.name
Modeling and Simulation
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tuw.researchTopic.value
20
-
tuw.researchTopic.value
60
-
tuw.researchTopic.value
20
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tuw.publication.orgunit
E165-01-1 - Forschungsgruppe Modellkatalyse und angewandte Katalyse
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tuw.event.name
DPG-Tagung der Sektion Kondensierte Materie
de
tuw.event.startdate
04-09-2022
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tuw.event.enddate
09-09-2022
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Campus der Universität Regensburg
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tuw.event.country
DE
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tuw.event.institution
DPG Fachverbände
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tuw.event.presenter
Zeininger, Johannes
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tuw.event.track
Multi Track
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wb.sciencebranch
Chemie
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch
Werkstofftechnik
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wb.sciencebranch.oefos
1040
-
wb.sciencebranch.oefos
1030
-
wb.sciencebranch.oefos
2050
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wb.sciencebranch.value
50
-
wb.sciencebranch.value
25
-
wb.sciencebranch.value
25
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item.languageiso639-1
en
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item.grantfulltext
none
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item.cerifentitytype
Publications
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item.openairetype
conference paper not in proceedings
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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item.fulltext
no Fulltext
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crisitem.author.dept
E165-01-1 - Forschungsgruppe Modellkatalyse und angewandte Katalyse
