Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch Reactor
The study and the understanding of the importance of the morphological properties of heterogeneous catalysts can pave the way for important improvements in the performance of catalytic systems. Non-uniform active phase distribution catalysts are normally adopted for consecutive reactions to improve...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | ChemEngineering |
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| Online Access: | https://www.mdpi.com/2305-7084/5/3/38 |
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| author | Emiliano Salucci Vincenzo Russo Tapio Salmi Martino Di Serio Riccardo Tesser |
| author_facet | Emiliano Salucci Vincenzo Russo Tapio Salmi Martino Di Serio Riccardo Tesser |
| author_sort | Emiliano Salucci |
| collection | DOAJ |
| description | The study and the understanding of the importance of the morphological properties of heterogeneous catalysts can pave the way for important improvements in the performance of catalytic systems. Non-uniform active phase distribution catalysts are normally adopted for consecutive reactions to improve the selectivity to the desired intermediate product. Attributes on which minor attention is paid, such as the distribution and thickness of the active phase, can be decisive in the final rationale of the catalyst synthesis strategy. Starting from a previous work, where a single non-uniform active phase model for catalyst particles was developed, a key step to control the entire system is to include the bulk-phase equations and related transport phenomena. For this purpose, this work proposes a modeling approach of a biphasic reactive system in a batch reactor in the presence of three different kinds of catalytic particles (egg shell, egg white, and egg yolk) whose distinction lies in the localization of the active zone. The reactive network consists of a couple of reactions in series, which take place exclusively on the solid surface, and the intermediate component is the main product of interest. To reveal the influence related to the type of catalyst, an extensive parametric study was conducted, varying several structural coefficients to highlight the changes in the intraparticle and bulk concentration profiles of the different chemical species. The main results can be considered of wide interest for the chemical reaction engineering community, as it was demonstrated that mass and heat transfer limitations affect the catalyst performance. For the chosen system, the egg shell catalyst normally led to better catalytic performances. |
| first_indexed | 2024-03-10T07:48:17Z |
| format | Article |
| id | doaj.art-5c23e3ef2303470cac5e3ba2014d8506 |
| institution | Directory Open Access Journal |
| issn | 2305-7084 |
| language | English |
| last_indexed | 2024-03-10T07:48:17Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ChemEngineering |
| spelling | doaj.art-5c23e3ef2303470cac5e3ba2014d85062023-11-22T12:27:30ZengMDPI AGChemEngineering2305-70842021-07-01533810.3390/chemengineering5030038Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch ReactorEmiliano Salucci0Vincenzo Russo1Tapio Salmi2Martino Di Serio3Riccardo Tesser4Chemical Sciences Department, University of Naples Federico II, IT-80126 Napoli, ItalyChemical Sciences Department, University of Naples Federico II, IT-80126 Napoli, ItalyLaboratory of Industrial Chemistry and Reaction Engineering, FI-20500 Åbo Akademi, FinlandChemical Sciences Department, University of Naples Federico II, IT-80126 Napoli, ItalyChemical Sciences Department, University of Naples Federico II, IT-80126 Napoli, ItalyThe study and the understanding of the importance of the morphological properties of heterogeneous catalysts can pave the way for important improvements in the performance of catalytic systems. Non-uniform active phase distribution catalysts are normally adopted for consecutive reactions to improve the selectivity to the desired intermediate product. Attributes on which minor attention is paid, such as the distribution and thickness of the active phase, can be decisive in the final rationale of the catalyst synthesis strategy. Starting from a previous work, where a single non-uniform active phase model for catalyst particles was developed, a key step to control the entire system is to include the bulk-phase equations and related transport phenomena. For this purpose, this work proposes a modeling approach of a biphasic reactive system in a batch reactor in the presence of three different kinds of catalytic particles (egg shell, egg white, and egg yolk) whose distinction lies in the localization of the active zone. The reactive network consists of a couple of reactions in series, which take place exclusively on the solid surface, and the intermediate component is the main product of interest. To reveal the influence related to the type of catalyst, an extensive parametric study was conducted, varying several structural coefficients to highlight the changes in the intraparticle and bulk concentration profiles of the different chemical species. The main results can be considered of wide interest for the chemical reaction engineering community, as it was demonstrated that mass and heat transfer limitations affect the catalyst performance. For the chosen system, the egg shell catalyst normally led to better catalytic performances.https://www.mdpi.com/2305-7084/5/3/38non-uniform active phase distribution catalystsfluid-solid batch modelkineticsintraparticle mass and heat transfercatalyst optimization |
| spellingShingle | Emiliano Salucci Vincenzo Russo Tapio Salmi Martino Di Serio Riccardo Tesser Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch Reactor ChemEngineering non-uniform active phase distribution catalysts fluid-solid batch model kinetics intraparticle mass and heat transfer catalyst optimization |
| title | Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch Reactor |
| title_full | Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch Reactor |
| title_fullStr | Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch Reactor |
| title_full_unstemmed | Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch Reactor |
| title_short | Intraparticle Model for Non-Uniform Active Phase Distribution Catalysts in a Batch Reactor |
| title_sort | intraparticle model for non uniform active phase distribution catalysts in a batch reactor |
| topic | non-uniform active phase distribution catalysts fluid-solid batch model kinetics intraparticle mass and heat transfer catalyst optimization |
| url | https://www.mdpi.com/2305-7084/5/3/38 |
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