Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen Generation
Abstract Fe2O3/Al2O3 and Fe2O3/TiO2/Al2O3 oxygen carriers were fabricated and evaluated for chemical looping hydrogen generation (CLHG) using a TGA system and a fixed-bed reactor. Oxygen carriers were converted to around 33% in a fixed-bed reactor to ensure uniform reduction. The reduced oxygen carr...
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| Format: | Article |
| Language: | English |
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Springer
2020-10-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.2020.06.0322 |
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| author | Hsuan-Chih Wu Young Ku Yi-Syuan Huang Niels Michiel Moed |
| author_facet | Hsuan-Chih Wu Young Ku Yi-Syuan Huang Niels Michiel Moed |
| author_sort | Hsuan-Chih Wu |
| collection | DOAJ |
| description | Abstract Fe2O3/Al2O3 and Fe2O3/TiO2/Al2O3 oxygen carriers were fabricated and evaluated for chemical looping hydrogen generation (CLHG) using a TGA system and a fixed-bed reactor. Oxygen carriers were converted to around 33% in a fixed-bed reactor to ensure uniform reduction. The reduced oxygen carrier was tested for steam generation, where in all cases Fe2O3/Al2O3 displayed a better conversion than Fe2O3/TiO2/Al2O3. It was found that increasing the reaction temperature from 800 to 850 °C had little effect for either oxygen carrier, but a further increase to 900°C resulted in an increased steam conversion. A higher steam flow rate caused a lower overall steam conversion but a higher H2 production. A higher feed rate of reduced oxygen carrier let to a higher steam conversion up to a rate of 18.4 and 14.9 g min−1 for Fe2O3/Al2O3 and Fe2O3/TiO2/Al2O3, respectively. A final comparison was performed with up to 50 redox cycles, where Fe2O3/Al2O3 showed superior reactivity in the first cycles but ended at a conversion of 54.6% with Fe2O3/TiO2/Al2O3 ending at a conversion of 64.6%. |
| format | Article |
| id | doaj-art-bb5cd05daf5c44578ac9161cea0314d1 |
| institution | DOAJ |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-10-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-bb5cd05daf5c44578ac9161cea0314d12025-08-20T02:43:10ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-10-0121411310.4209/aaqr.2020.06.0322Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen GenerationHsuan-Chih Wu0Young Ku1Yi-Syuan Huang2Niels Michiel Moed3Department of Chemical Engineering, National Taiwan University of Science and TechnologyDepartment of Chemical Engineering, National Taiwan University of Science and TechnologyDepartment of Chemical Engineering, National Taiwan University of Science and TechnologyDepartment of Chemical Engineering, National Taiwan University of Science and TechnologyAbstract Fe2O3/Al2O3 and Fe2O3/TiO2/Al2O3 oxygen carriers were fabricated and evaluated for chemical looping hydrogen generation (CLHG) using a TGA system and a fixed-bed reactor. Oxygen carriers were converted to around 33% in a fixed-bed reactor to ensure uniform reduction. The reduced oxygen carrier was tested for steam generation, where in all cases Fe2O3/Al2O3 displayed a better conversion than Fe2O3/TiO2/Al2O3. It was found that increasing the reaction temperature from 800 to 850 °C had little effect for either oxygen carrier, but a further increase to 900°C resulted in an increased steam conversion. A higher steam flow rate caused a lower overall steam conversion but a higher H2 production. A higher feed rate of reduced oxygen carrier let to a higher steam conversion up to a rate of 18.4 and 14.9 g min−1 for Fe2O3/Al2O3 and Fe2O3/TiO2/Al2O3, respectively. A final comparison was performed with up to 50 redox cycles, where Fe2O3/Al2O3 showed superior reactivity in the first cycles but ended at a conversion of 54.6% with Fe2O3/TiO2/Al2O3 ending at a conversion of 64.6%.https://doi.org/10.4209/aaqr.2020.06.0322Chemical looping hydrogen generation (CLHG)Fe2O3/Al2O3Fe2O3/TiO2/Al2O3Oxygen carrierMoving-bed reactor |
| spellingShingle | Hsuan-Chih Wu Young Ku Yi-Syuan Huang Niels Michiel Moed Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen Generation Aerosol and Air Quality Research Chemical looping hydrogen generation (CLHG) Fe2O3/Al2O3 Fe2O3/TiO2/Al2O3 Oxygen carrier Moving-bed reactor |
| title | Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen Generation |
| title_full | Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen Generation |
| title_fullStr | Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen Generation |
| title_full_unstemmed | Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen Generation |
| title_short | Fabrication of Iron-based Oxygen Carriers on Various Supports for Chemical Looping Hydrogen Generation |
| title_sort | fabrication of iron based oxygen carriers on various supports for chemical looping hydrogen generation |
| topic | Chemical looping hydrogen generation (CLHG) Fe2O3/Al2O3 Fe2O3/TiO2/Al2O3 Oxygen carrier Moving-bed reactor |
| url | https://doi.org/10.4209/aaqr.2020.06.0322 |
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