Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based Membranes
Liquid organic hydrogen carriers (LOHC) are able to store hydrogen stably and safely in liquid form. The carrier can be loaded or unloaded with hydrogen via catalytic reactions. However, the release reaction brings certain challenges. In addition to an enormous heat requirement, the released hydroge...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2018-11-01
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| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/8/4/112 |
| _version_ | 1797708349705289728 |
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| author | Alexander Wunsch Marijan Mohr Peter Pfeifer |
| author_facet | Alexander Wunsch Marijan Mohr Peter Pfeifer |
| author_sort | Alexander Wunsch |
| collection | DOAJ |
| description | Liquid organic hydrogen carriers (LOHC) are able to store hydrogen stably and safely in liquid form. The carrier can be loaded or unloaded with hydrogen via catalytic reactions. However, the release reaction brings certain challenges. In addition to an enormous heat requirement, the released hydrogen is contaminated by traces of evaporated LOHC and by-products. Micro process engineering offers a promising approach to meet these challenges. In this paper, a micro-structured multi-stage reactor concept with an intermediate separation of hydrogen is presented for the application of perhydro-dibenzyltoluene dehydrogenation. Each reactor stage consists of a micro-structured radial flow reactor designed for multi-phase flow of LOHC and released hydrogen. The hydrogen is separated from the reactors’ gas phase effluent via PdAg-membranes, which are integrated into a micro-structured environment. Separate experiments were carried out to describe the kinetics of the reaction and the separation ability of the membrane. A model was developed, which was fed with these data to demonstrate the influence of intermediate separation on the efficiency of LOHC dehydrogenation. |
| first_indexed | 2024-03-12T06:20:12Z |
| format | Article |
| id | doaj.art-bd741698058942cb9d81da3ebd6501bb |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-12T06:20:12Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-bd741698058942cb9d81da3ebd6501bb2023-09-03T02:17:50ZengMDPI AGMembranes2077-03752018-11-018411210.3390/membranes8040112membranes8040112Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based MembranesAlexander Wunsch0Marijan Mohr1Peter Pfeifer2Institute for Micro Process Engineering, Karlsruhe Institute for Technology, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Micro Process Engineering, Karlsruhe Institute for Technology, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Micro Process Engineering, Karlsruhe Institute for Technology, 76344 Eggenstein-Leopoldshafen, GermanyLiquid organic hydrogen carriers (LOHC) are able to store hydrogen stably and safely in liquid form. The carrier can be loaded or unloaded with hydrogen via catalytic reactions. However, the release reaction brings certain challenges. In addition to an enormous heat requirement, the released hydrogen is contaminated by traces of evaporated LOHC and by-products. Micro process engineering offers a promising approach to meet these challenges. In this paper, a micro-structured multi-stage reactor concept with an intermediate separation of hydrogen is presented for the application of perhydro-dibenzyltoluene dehydrogenation. Each reactor stage consists of a micro-structured radial flow reactor designed for multi-phase flow of LOHC and released hydrogen. The hydrogen is separated from the reactors’ gas phase effluent via PdAg-membranes, which are integrated into a micro-structured environment. Separate experiments were carried out to describe the kinetics of the reaction and the separation ability of the membrane. A model was developed, which was fed with these data to demonstrate the influence of intermediate separation on the efficiency of LOHC dehydrogenation.https://www.mdpi.com/2077-0375/8/4/112LOHCdehydrogenationmulti-stagePdAg-membranemicro reactorhydrogen purification |
| spellingShingle | Alexander Wunsch Marijan Mohr Peter Pfeifer Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based Membranes Membranes LOHC dehydrogenation multi-stage PdAg-membrane micro reactor hydrogen purification |
| title | Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based Membranes |
| title_full | Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based Membranes |
| title_fullStr | Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based Membranes |
| title_full_unstemmed | Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based Membranes |
| title_short | Intensified LOHC-Dehydrogenation Using Multi-Stage Microstructures and Pd-Based Membranes |
| title_sort | intensified lohc dehydrogenation using multi stage microstructures and pd based membranes |
| topic | LOHC dehydrogenation multi-stage PdAg-membrane micro reactor hydrogen purification |
| url | https://www.mdpi.com/2077-0375/8/4/112 |
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