Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purification
In the context of global efforts to address climate change, capturing and storing CO2, as well as developing hydrogen energy, have emerged as widely recognized effective methods for reducing greenhouse gas emissions. In particular, the process of hydrogen production through the gasification and refo...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
|
| Series: | Carbon Capture Science & Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772656825000235 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850127366932660224 |
|---|---|
| author | Longlong Lei Hang Yuan Hongguang Zhu Jie Ma Fanghui Pan Fulu Lu |
| author_facet | Longlong Lei Hang Yuan Hongguang Zhu Jie Ma Fanghui Pan Fulu Lu |
| author_sort | Longlong Lei |
| collection | DOAJ |
| description | In the context of global efforts to address climate change, capturing and storing CO2, as well as developing hydrogen energy, have emerged as widely recognized effective methods for reducing greenhouse gas emissions. In particular, the process of hydrogen production through the gasification and reforming of organic fuels necessitates the separation and purification of H2 from CO2. Although various technological pathways have been proposed in this research field, issues such as low separation efficiency, high energy consumption, and high costs are prevalent to varying degrees across these different methods. This study is based on reports of the strong interaction between ferric oxide (Fe3O4) and CO2, as well as the magnetic exclusion of hydrogen gas. This study hypothesize carbon-coated magnetite (C@Fe3O4) as a material with selective adsorption of CO2, enabling efficient separation of H2 and CO2. To test this hypothesis, this study synthesized C@Fe3O4 and conducted isothermal adsorption tests to determine the adsorption curves for H2 and CO2, along with calculations for adsorption selectivity. The results indicated that C@Fe3O4 exhibited good selectivity for CO2 over H2 under ambient conditions. Penetration experiments further confirmed that the separation ratio for H2 and CO2 reached as high as 13.6. Comparative experiments with porous carbon materials lacking the Fe3O4 core, along with characterization analyses of C@Fe3O4, validated the dual mechanism at play: the strong adsorption of CO2 by the Fe3O4 core and the magnetic exclusion of hydrogen. The carbon coating did not inhibit the strong adsorption of CO2 by Fe3O4 but also provided a barrier that prevented direct contact between H2 and Fe3O4, mitigating any potential reduction reactions that could lead to magnetic decay. Moreover, the petal-like carbon-coated structure increased the volumetric CO2 adsorption capacity of the material. Although the high density of the Fe3O4 crystalline core resulted in modest mass adsorption capacity, the unique layered carbon structure enhanced the specific surface area. This dual effect led to a volumetric CO2 adsorption capacity of 1.32 mmol/cm³, surpassing that of most existing porous carbon materials, and the CO2/H2 adsorption ratio also exceeded that of many carbon materials. |
| format | Article |
| id | doaj-art-519a3eb49be54514ab7cc473bbb04b4f |
| institution | OA Journals |
| issn | 2772-6568 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Carbon Capture Science & Technology |
| spelling | doaj-art-519a3eb49be54514ab7cc473bbb04b4f2025-08-20T02:33:42ZengElsevierCarbon Capture Science & Technology2772-65682025-06-011510038310.1016/j.ccst.2025.100383Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purificationLonglong Lei0Hang Yuan1Hongguang Zhu2Jie Ma3Fanghui Pan4Fulu Lu5School of Mechanical Engineering, Tongji University, Shanghai 201804, China; Bio-Energy Research Center, Institute of New Rural Development, Tongji University, Shanghai, 201804, ChinaSchool of Mechanical Engineering, Tongji University, Shanghai 201804, China; Bio-Energy Research Center, Institute of New Rural Development, Tongji University, Shanghai, 201804, ChinaSchool of Mechanical Engineering, Tongji University, Shanghai 201804, China; Bio-Energy Research Center, Institute of New Rural Development, Tongji University, Shanghai, 201804, China; Corresponding authors.College of Environmental Science and Engineering, Tongji University, Shanghai, 201804, China; Corresponding authors.School of Mechanical Engineering, Tongji University, Shanghai 201804, China; Bio-Energy Research Center, Institute of New Rural Development, Tongji University, Shanghai, 201804, ChinaSchool of Mechanical Engineering, Tongji University, Shanghai 201804, China; Bio-Energy Research Center, Institute of New Rural Development, Tongji University, Shanghai, 201804, ChinaIn the context of global efforts to address climate change, capturing and storing CO2, as well as developing hydrogen energy, have emerged as widely recognized effective methods for reducing greenhouse gas emissions. In particular, the process of hydrogen production through the gasification and reforming of organic fuels necessitates the separation and purification of H2 from CO2. Although various technological pathways have been proposed in this research field, issues such as low separation efficiency, high energy consumption, and high costs are prevalent to varying degrees across these different methods. This study is based on reports of the strong interaction between ferric oxide (Fe3O4) and CO2, as well as the magnetic exclusion of hydrogen gas. This study hypothesize carbon-coated magnetite (C@Fe3O4) as a material with selective adsorption of CO2, enabling efficient separation of H2 and CO2. To test this hypothesis, this study synthesized C@Fe3O4 and conducted isothermal adsorption tests to determine the adsorption curves for H2 and CO2, along with calculations for adsorption selectivity. The results indicated that C@Fe3O4 exhibited good selectivity for CO2 over H2 under ambient conditions. Penetration experiments further confirmed that the separation ratio for H2 and CO2 reached as high as 13.6. Comparative experiments with porous carbon materials lacking the Fe3O4 core, along with characterization analyses of C@Fe3O4, validated the dual mechanism at play: the strong adsorption of CO2 by the Fe3O4 core and the magnetic exclusion of hydrogen. The carbon coating did not inhibit the strong adsorption of CO2 by Fe3O4 but also provided a barrier that prevented direct contact between H2 and Fe3O4, mitigating any potential reduction reactions that could lead to magnetic decay. Moreover, the petal-like carbon-coated structure increased the volumetric CO2 adsorption capacity of the material. Although the high density of the Fe3O4 crystalline core resulted in modest mass adsorption capacity, the unique layered carbon structure enhanced the specific surface area. This dual effect led to a volumetric CO2 adsorption capacity of 1.32 mmol/cm³, surpassing that of most existing porous carbon materials, and the CO2/H2 adsorption ratio also exceeded that of many carbon materials.http://www.sciencedirect.com/science/article/pii/S2772656825000235CO2 captureH2 purificationAdsorption selectivityC@Fe3O4 |
| spellingShingle | Longlong Lei Hang Yuan Hongguang Zhu Jie Ma Fanghui Pan Fulu Lu Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purification Carbon Capture Science & Technology CO2 capture H2 purification Adsorption selectivity C@Fe3O4 |
| title | Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purification |
| title_full | Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purification |
| title_fullStr | Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purification |
| title_full_unstemmed | Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purification |
| title_short | Research on the effect of selective adsorption of CO2 by C@Fe3O4 for H2 purification |
| title_sort | research on the effect of selective adsorption of co2 by c fe3o4 for h2 purification |
| topic | CO2 capture H2 purification Adsorption selectivity C@Fe3O4 |
| url | http://www.sciencedirect.com/science/article/pii/S2772656825000235 |
| work_keys_str_mv | AT longlonglei researchontheeffectofselectiveadsorptionofco2bycfe3o4forh2purification AT hangyuan researchontheeffectofselectiveadsorptionofco2bycfe3o4forh2purification AT hongguangzhu researchontheeffectofselectiveadsorptionofco2bycfe3o4forh2purification AT jiema researchontheeffectofselectiveadsorptionofco2bycfe3o4forh2purification AT fanghuipan researchontheeffectofselectiveadsorptionofco2bycfe3o4forh2purification AT fululu researchontheeffectofselectiveadsorptionofco2bycfe3o4forh2purification |