In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture
Techniques for capturing CO₂ based on traditional amine-based approaches face technical barriers of kinetic limitations and high energy requirements for solvent regeneration. Metal-molecular sieve composites are promising solid acid catalysts (SACs). In this paper, we report a one-step synthesis and...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-06-01
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| Series: | Carbon Capture Science & Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772656825000727 |
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| author | Shijian Lu Yanyang Xue Fanpeng Meng Miaomiao Liu Ting Hou Yimeng Luo Ling Liu Yongsheng An Guojun Kang Xingdian Wu |
| author_facet | Shijian Lu Yanyang Xue Fanpeng Meng Miaomiao Liu Ting Hou Yimeng Luo Ling Liu Yongsheng An Guojun Kang Xingdian Wu |
| author_sort | Shijian Lu |
| collection | DOAJ |
| description | Techniques for capturing CO₂ based on traditional amine-based approaches face technical barriers of kinetic limitations and high energy requirements for solvent regeneration. Metal-molecular sieve composites are promising solid acid catalysts (SACs). In this paper, we report a one-step synthesis and preparation of Fe-MOR catalysts by introducing iron into the framework of mullite (MOR) zeolite molecular sieves via a simple and facile in-situ synthesis method, overcoming the uncontrolled metal distribution and instability generated by the production of such SAC catalyst via conventional methods such as loading or ion exchange and further enhancing their pore structure regulation and acidic structure. The catalysts were also applied to the catalytic desorption of CO₂ from a 30wt % MEA aqueous solution, and the CO₂ desorption rate and desorption capacity were increased by 46 % and 5 %, respectively, and the relative regeneration heat load was reduced by 17.4 % compared with the non-catalytic system when the molar ratio of Fe to Si was 2 %. In addition, the mechanism of Fe-MOR to improve the CO₂ capture performance was also discussed, and Fe doping helped increase both the activity of the acidic sites and the number of acidic sites. |
| format | Article |
| id | doaj-art-2bf369a16efd4ccb94b8cb3b76a9f5f1 |
| institution | Kabale University |
| issn | 2772-6568 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj-art-2bf369a16efd4ccb94b8cb3b76a9f5f12025-08-20T03:47:02ZengElsevierCarbon Capture Science & Technology2772-65682025-06-011510043310.1016/j.ccst.2025.100433In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 captureShijian Lu0Yanyang Xue1Fanpeng Meng2Miaomiao Liu3Ting Hou4Yimeng Luo5Ling Liu6Yongsheng An7Guojun Kang8Xingdian Wu9Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Carbon Neutrality Institute, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Corresponding authors.Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Carbon Neutrality Institute, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR ChinaChina Petroleum Pipeline Engineering Corporation, Langfang, PR ChinaJiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Carbon Neutrality Institute, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR ChinaJiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Carbon Neutrality Institute, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR ChinaJiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Carbon Neutrality Institute, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR ChinaJiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Carbon Neutrality Institute, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Corresponding authors.China Petroleum Pipeline Engineering Corporation, Langfang, PR ChinaJiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR China; Carbon Neutrality Institute, China University of Mining & Technology, Xuzhou, Jiangsu 221008, PR ChinaShandong Runyin Biochemical Co., Ltd. Taian, Shandong, 271500, PR ChinaTechniques for capturing CO₂ based on traditional amine-based approaches face technical barriers of kinetic limitations and high energy requirements for solvent regeneration. Metal-molecular sieve composites are promising solid acid catalysts (SACs). In this paper, we report a one-step synthesis and preparation of Fe-MOR catalysts by introducing iron into the framework of mullite (MOR) zeolite molecular sieves via a simple and facile in-situ synthesis method, overcoming the uncontrolled metal distribution and instability generated by the production of such SAC catalyst via conventional methods such as loading or ion exchange and further enhancing their pore structure regulation and acidic structure. The catalysts were also applied to the catalytic desorption of CO₂ from a 30wt % MEA aqueous solution, and the CO₂ desorption rate and desorption capacity were increased by 46 % and 5 %, respectively, and the relative regeneration heat load was reduced by 17.4 % compared with the non-catalytic system when the molar ratio of Fe to Si was 2 %. In addition, the mechanism of Fe-MOR to improve the CO₂ capture performance was also discussed, and Fe doping helped increase both the activity of the acidic sites and the number of acidic sites.http://www.sciencedirect.com/science/article/pii/S2772656825000727CO2 captureSolid acid catalystAmine regenerationZeolitesEnergy-efficient |
| spellingShingle | Shijian Lu Yanyang Xue Fanpeng Meng Miaomiao Liu Ting Hou Yimeng Luo Ling Liu Yongsheng An Guojun Kang Xingdian Wu In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture Carbon Capture Science & Technology CO2 capture Solid acid catalyst Amine regeneration Zeolites Energy-efficient |
| title | In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture |
| title_full | In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture |
| title_fullStr | In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture |
| title_full_unstemmed | In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture |
| title_short | In-situ synthesis of Fe-MOR molecular sieve catalyst for energy-efficient CO2 capture |
| title_sort | in situ synthesis of fe mor molecular sieve catalyst for energy efficient co2 capture |
| topic | CO2 capture Solid acid catalyst Amine regeneration Zeolites Energy-efficient |
| url | http://www.sciencedirect.com/science/article/pii/S2772656825000727 |
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