Simulation of absorption processes in nanoparticle catalysts
- In this contribution, we present a novel modeling approach for mass transport problems that connects the microscale with the macroscale. It is based on a proper investigation of the diffusion process in the catalytic pellets from which, after semi-analytic considerations, a source term for the macroscopic advection-diffusion 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 the proposed semi-analytic approach. After the presentation of our model, we show results for its calibration against the macroscopic response of a mass transport experiment. Based thereon, the effective diffusion parameters of the catalyst pellet can be identified. Furthermore, we test the model's robustness by applying significant noise to virtual experimental datasets.
| Author: | Maximilian KöhlerORCiDGND, Philipp JunkerORCiDGND, Daniel BalzaniORCiDGND |
|---|---|
| URN: | urn:nbn:de:hbz:294-110275 |
| DOI: | https://doi.org/10.1002/pamm.202000076 |
| Parent Title (English): | Proceedings in applied mathematics & mechanics |
| Publisher: | Wiley |
| Place of publication: | Weinheim |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2024/03/11 |
| Date of first Publication: | 2021/01/25 |
| Publishing Institution: | Ruhr-Universität Bochum, Universitätsbibliothek |
| Volume: | 20 |
| Issue: | 1, Artikel e202000076 |
| First Page: | e202000076-1 |
| Last Page: | e202000076-3 |
| Note: | Dieser Beitrag ist auf Grund des DEAL-Wiley-Vertrages frei zugänglich. |
| Institutes/Facilities: | Lehrstuhl für Mechanik - Kontinuumsmechanik |
| Dewey Decimal Classification: | Technik, Medizin, angewandte Wissenschaften / Ingenieurbau, Umwelttechnik |
| open_access (DINI-Set): | open_access |
| faculties: | Fakultät für Bau- und Umweltingenieurwissenschaften |
| Licence (English): |  Creative Commons - CC BY 4.0 - Attribution 4.0 International |
