dc.identifier.uri |
http://dx.doi.org/10.15488/12839 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/12942 |
|
dc.contributor.author |
Köhler, Maximilian
|
|
dc.contributor.author |
Junker, Philipp
|
|
dc.contributor.author |
Balzani, Daniel
|
|
dc.date.accessioned |
2022-10-06T06:53:29Z |
|
dc.date.available |
2022-10-06T06:53:29Z |
|
dc.date.issued |
2022 |
|
dc.identifier.citation |
Köhler, M.; Junker, P.; Balzani, D.: Continuum multiscale modeling of absorption processes in micro- and nanocatalysts. In: Archive of applied mechanics : (Ingenieur-Archiv) 92 (2022), Nr. 7, S. 2207-2223. DOI: https://doi.org/10.1007/s00419-022-02172-8 |
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dc.description.abstract |
In this paper, we propose a novel, semi-analytic approach for the two-scale, computational modeling of concentration transport in packed bed reactors. Within the reactor, catalytic pellets are stacked, which alter the concentration evolution. Firstly, the considered experimental setup is discussed and a naive one-scale approach is presented. This one-scale model motivates, due to unphysical fitted values, to enrich the computational procedure by another scale. The computations on the second scale, here referred to as microscale, are based on a proper investigation of the diffusion process in the catalytic pellets from which, after continuum-consistent considerations, a sink term for the macroscopic advection–diffusion–reaction process can be identified. For the special case of a spherical catalyst pellet, the parabolic partial differential equation at the microscale can be reduced to a single ordinary differential equation in time through a semi-analytic approach. After the presentation of our model, we show results for its calibration against the macroscopic response of a simple standard mass transport experiment. Based thereon, the effective diffusion parameters of the catalyst pellets can be identified. © 2022, The Author(s). |
eng |
dc.language.iso |
eng |
|
dc.publisher |
Berlin ; Heidelberg [u.a.] : Springer |
|
dc.relation.ispartofseries |
Archive of applied mechanics : (Ingenieur-Archiv) 92 (2022), Nr. 7 |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
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dc.subject |
Calibration |
eng |
dc.subject |
Catalysis |
eng |
dc.subject |
Multiscale diffusion |
eng |
dc.subject.ddc |
690 | Hausbau, Bauhandwerk
|
ger |
dc.title |
Continuum multiscale modeling of absorption processes in micro- and nanocatalysts |
eng |
dc.type |
Article |
|
dc.type |
Text |
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dc.relation.essn |
1432-0681 |
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dc.relation.doi |
https://doi.org/10.1007/s00419-022-02172-8 |
|
dc.bibliographicCitation.issue |
7 |
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dc.bibliographicCitation.volume |
92 |
|
dc.bibliographicCitation.firstPage |
2207 |
|
dc.bibliographicCitation.lastPage |
2223 |
|
dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
|