Design and Test of a Miniature Hydrogen Production Integrated Reactor
A detailed study of the experimental issues involved in the design and operation of a methanol steam microreformer is presented in this paper. Micromachining technology was utilized to fabricate a metallic microchannel block coupling the exothermic and endothermic process. The microchannel block was...
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| Format: | Article |
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MDPI AG
2021-04-01
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| Series: | Reactions |
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| Online Access: | https://www.mdpi.com/2624-781X/2/2/7 |
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| author | Ion Velasco Oihane Sanz Iñigo Pérez-Miqueo Iñigo Legorburu Mario Montes |
| author_facet | Ion Velasco Oihane Sanz Iñigo Pérez-Miqueo Iñigo Legorburu Mario Montes |
| author_sort | Ion Velasco |
| collection | DOAJ |
| description | A detailed study of the experimental issues involved in the design and operation of a methanol steam microreformer is presented in this paper. Micromachining technology was utilized to fabricate a metallic microchannel block coupling the exothermic and endothermic process. The microchannel block was coated with a Pd/ZnO catalyst in the reforming channels and with Pd/Al<sub>2</sub>O<sub>3</sub> in the combustion channels by washcoating. An experimental system had been designed and fine-tuned allowing estimation of the heat losses of the system and to compensate for them by means of electric heating cartridges. In this way, the heat necessary for the reforming reaction is provided by methanol combustion, thanks to the temperature and flow cascade controller we developed. Thus, the coupling of both reactions in a block of microchannels without the interference caused by significant heat loss due to the small size of the laboratory microreactor could be studied. Runs of this microreformer device were carried out, varying the deposited catalyst amount, methanol steam reforming temperature and space velocity. When the reforming reaction was compensated by the combustion reaction and the heat losses by the electric heating, an almost isothermal behavior of the microchannel reactor was observed. In the less favorable case, with a 460 mg catalyst load, ΔT<sub>MSR</sub> was about 8 K and ΔT<sub>COMB</sub> was about 16 K. This confirmed good coupling of the methanol steam reforming and the methanol combustion. |
| first_indexed | 2024-03-10T12:15:23Z |
| format | Article |
| id | doaj.art-636e1a17180b47b1bb64037727119ac1 |
| institution | Directory Open Access Journal |
| issn | 2624-781X |
| language | English |
| last_indexed | 2024-03-10T12:15:23Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Reactions |
| spelling | doaj.art-636e1a17180b47b1bb64037727119ac12023-11-21T15:51:53ZengMDPI AGReactions2624-781X2021-04-0122789310.3390/reactions2020007Design and Test of a Miniature Hydrogen Production Integrated ReactorIon Velasco0Oihane Sanz1Iñigo Pérez-Miqueo2Iñigo Legorburu3Mario Montes4Department Applied Chemistry, University of the Basque Country (UPV/EHU), 20018 San Sebastian, SpainDepartment Applied Chemistry, University of the Basque Country (UPV/EHU), 20018 San Sebastian, SpainDepartment Applied Chemistry, University of the Basque Country (UPV/EHU), 20018 San Sebastian, SpainDepartment Applied Chemistry, University of the Basque Country (UPV/EHU), 20018 San Sebastian, SpainDepartment Applied Chemistry, University of the Basque Country (UPV/EHU), 20018 San Sebastian, SpainA detailed study of the experimental issues involved in the design and operation of a methanol steam microreformer is presented in this paper. Micromachining technology was utilized to fabricate a metallic microchannel block coupling the exothermic and endothermic process. The microchannel block was coated with a Pd/ZnO catalyst in the reforming channels and with Pd/Al<sub>2</sub>O<sub>3</sub> in the combustion channels by washcoating. An experimental system had been designed and fine-tuned allowing estimation of the heat losses of the system and to compensate for them by means of electric heating cartridges. In this way, the heat necessary for the reforming reaction is provided by methanol combustion, thanks to the temperature and flow cascade controller we developed. Thus, the coupling of both reactions in a block of microchannels without the interference caused by significant heat loss due to the small size of the laboratory microreactor could be studied. Runs of this microreformer device were carried out, varying the deposited catalyst amount, methanol steam reforming temperature and space velocity. When the reforming reaction was compensated by the combustion reaction and the heat losses by the electric heating, an almost isothermal behavior of the microchannel reactor was observed. In the less favorable case, with a 460 mg catalyst load, ΔT<sub>MSR</sub> was about 8 K and ΔT<sub>COMB</sub> was about 16 K. This confirmed good coupling of the methanol steam reforming and the methanol combustion.https://www.mdpi.com/2624-781X/2/2/7H<sub>2</sub> productionmicroreactorintegration |
| spellingShingle | Ion Velasco Oihane Sanz Iñigo Pérez-Miqueo Iñigo Legorburu Mario Montes Design and Test of a Miniature Hydrogen Production Integrated Reactor Reactions H<sub>2</sub> production microreactor integration |
| title | Design and Test of a Miniature Hydrogen Production Integrated Reactor |
| title_full | Design and Test of a Miniature Hydrogen Production Integrated Reactor |
| title_fullStr | Design and Test of a Miniature Hydrogen Production Integrated Reactor |
| title_full_unstemmed | Design and Test of a Miniature Hydrogen Production Integrated Reactor |
| title_short | Design and Test of a Miniature Hydrogen Production Integrated Reactor |
| title_sort | design and test of a miniature hydrogen production integrated reactor |
| topic | H<sub>2</sub> production microreactor integration |
| url | https://www.mdpi.com/2624-781X/2/2/7 |
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