Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite Materials
Spherical SBA-15-based metal⁻organic framework (MOF) composite materials were prepared, with nickel as the metal center of MOFs. The materials were characterized via scanning electron microscopy, X-ray fluorescence analysis, X-ray powder diffraction, Fourier-transform infrared spectroscopy...
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MDPI AG
2019-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/9/2/149 |
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| author | Hong Liu Wei Ding Shaohua Lei Xupei Tian Fubao Zhou |
| author_facet | Hong Liu Wei Ding Shaohua Lei Xupei Tian Fubao Zhou |
| author_sort | Hong Liu |
| collection | DOAJ |
| description | Spherical SBA-15-based metal⁻organic framework (MOF) composite materials were prepared, with nickel as the metal center of MOFs. The materials were characterized via scanning electron microscopy, X-ray fluorescence analysis, X-ray powder diffraction, Fourier-transform infrared spectroscopy, and nitrogen (N<sub>2</sub>) adsorption⁻desorption. The methane (CH<sub>4</sub>) or N<sub>2</sub> high-pressure adsorption isotherms of the samples were measured and compared. The specific surface area and adsorption capacity of the composite materials were generally higher than the pristine MOFs, but were much lower than the synthesized SBA-15. The selectivity of the samples toward a binary gas mixture was determined from the Langmuir adsorption equation. The results revealed that, of all the samples, the MOF-2/SBA-15 sample had the best CH<sub>4</sub>/N<sub>2</sub> adsorption selectivity, with an adsorption selection parameter (<i>S</i>) of 11.1. However, the adsorption of MOF-2/SBA-15 was less than that of spherical SBA-15, due to partial plugging of the pores during the synthesis process. Further research is essential for improving the performance of spherical SBA-15-based MOF materials and (in turn) the enrichment of CH<sub>4</sub> from the CH<sub>4</sub>/N<sub>2</sub> mixture. |
| first_indexed | 2024-12-10T20:34:54Z |
| format | Article |
| id | doaj.art-b6cf061abecb4b3ba24a90bf69c2241a |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-10T20:34:54Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-b6cf061abecb4b3ba24a90bf69c2241a2022-12-22T01:34:35ZengMDPI AGNanomaterials2079-49912019-01-019214910.3390/nano9020149nano9020149Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite MaterialsHong Liu0Wei Ding1Shaohua Lei2Xupei Tian3Fubao Zhou4Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, ChinaJiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, ChinaJiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, ChinaJiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, ChinaJiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, ChinaSpherical SBA-15-based metal⁻organic framework (MOF) composite materials were prepared, with nickel as the metal center of MOFs. The materials were characterized via scanning electron microscopy, X-ray fluorescence analysis, X-ray powder diffraction, Fourier-transform infrared spectroscopy, and nitrogen (N<sub>2</sub>) adsorption⁻desorption. The methane (CH<sub>4</sub>) or N<sub>2</sub> high-pressure adsorption isotherms of the samples were measured and compared. The specific surface area and adsorption capacity of the composite materials were generally higher than the pristine MOFs, but were much lower than the synthesized SBA-15. The selectivity of the samples toward a binary gas mixture was determined from the Langmuir adsorption equation. The results revealed that, of all the samples, the MOF-2/SBA-15 sample had the best CH<sub>4</sub>/N<sub>2</sub> adsorption selectivity, with an adsorption selection parameter (<i>S</i>) of 11.1. However, the adsorption of MOF-2/SBA-15 was less than that of spherical SBA-15, due to partial plugging of the pores during the synthesis process. Further research is essential for improving the performance of spherical SBA-15-based MOF materials and (in turn) the enrichment of CH<sub>4</sub> from the CH<sub>4</sub>/N<sub>2</sub> mixture.https://www.mdpi.com/2079-4991/9/2/149Coalbed methaneselective adsorptionspherical SBA-15MOF |
| spellingShingle | Hong Liu Wei Ding Shaohua Lei Xupei Tian Fubao Zhou Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite Materials Nanomaterials Coalbed methane selective adsorption spherical SBA-15 MOF |
| title | Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite Materials |
| title_full | Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite Materials |
| title_fullStr | Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite Materials |
| title_full_unstemmed | Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite Materials |
| title_short | Selective Adsorption of CH<sub>4</sub>/N<sub>2</sub> on Ni-based MOF/SBA-15 Composite Materials |
| title_sort | selective adsorption of ch sub 4 sub n sub 2 sub on ni based mof sba 15 composite materials |
| topic | Coalbed methane selective adsorption spherical SBA-15 MOF |
| url | https://www.mdpi.com/2079-4991/9/2/149 |
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