Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites
Abstract Physisorption presents a promising alternative to cryogenic distillation for capturing the most potent greenhouse gas, SF6, but existing adsorbents face challenges in meeting diverse chemical and engineering concerns. Herein, with insights into in-pore chemistry and industrial process desig...
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Nature Portfolio
2025-01-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-56031-5 |
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| author | Jinjian Li Yuting Chen Tian Ke Yuanyuan Jin Rongrong Fan Guihong Xu Liu Yang Zhiguo Zhang Zongbi Bao Qilong Ren Qiwei Yang |
| author_facet | Jinjian Li Yuting Chen Tian Ke Yuanyuan Jin Rongrong Fan Guihong Xu Liu Yang Zhiguo Zhang Zongbi Bao Qilong Ren Qiwei Yang |
| author_sort | Jinjian Li |
| collection | DOAJ |
| description | Abstract Physisorption presents a promising alternative to cryogenic distillation for capturing the most potent greenhouse gas, SF6, but existing adsorbents face challenges in meeting diverse chemical and engineering concerns. Herein, with insights into in-pore chemistry and industrial process design, we report a systematic investigation that constructed two low-cost composites pellets (Al(fum)@2%HPC and Al(fum)@5%Kaolin) coupled with an innovative two-stage Vacuum Temperature Swing Adsorption (VTSA) process for the ultra-efficient recovery of low-concentration SF6 from N2. Record-high selectivities (> 2×104) and SF6 dynamic capacities (~ 2.7 mmol/g) were achieved, while exceptional SF6 productivities (~ 58.7 L/kg), yields (~ 96.8%), and recyclability (~ 1000 cycles) were demonstrated in fixed-bed adsorption-desorption experiments under mild regeneration conditions. 2D solid-state NMR/in-situ FTIR, DFT-D binding/diffusion simulation analyses revealed the multi-site binding mode and the ultra-fast diffusion of SF6 within the channels. The proposed VTSA processes successfully met the dual stringent requirements of both environmental protection and electricity equipment operation: the SF6 recovery of 99.91% accompanied with a SF6 purity/working capacity of 99.91%/2.1 mmol/g, which significantly outperformed the industrial employed adsorbent zeolite 13X and showed only 18.7% the energy consumption of the cryogenic distillation. |
| format | Article |
| id | doaj-art-81d722b3007c4ff28e8c150a6109a6fd |
| institution | Kabale University |
| issn | 2041-1723 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj-art-81d722b3007c4ff28e8c150a6109a6fd2025-01-19T12:31:11ZengNature PortfolioNature Communications2041-17232025-01-0116111110.1038/s41467-025-56031-5Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks compositesJinjian Li0Yuting Chen1Tian Ke2Yuanyuan Jin3Rongrong Fan4Guihong Xu5Liu Yang6Zhiguo Zhang7Zongbi Bao8Qilong Ren9Qiwei Yang10Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityKey Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang UniversityAbstract Physisorption presents a promising alternative to cryogenic distillation for capturing the most potent greenhouse gas, SF6, but existing adsorbents face challenges in meeting diverse chemical and engineering concerns. Herein, with insights into in-pore chemistry and industrial process design, we report a systematic investigation that constructed two low-cost composites pellets (Al(fum)@2%HPC and Al(fum)@5%Kaolin) coupled with an innovative two-stage Vacuum Temperature Swing Adsorption (VTSA) process for the ultra-efficient recovery of low-concentration SF6 from N2. Record-high selectivities (> 2×104) and SF6 dynamic capacities (~ 2.7 mmol/g) were achieved, while exceptional SF6 productivities (~ 58.7 L/kg), yields (~ 96.8%), and recyclability (~ 1000 cycles) were demonstrated in fixed-bed adsorption-desorption experiments under mild regeneration conditions. 2D solid-state NMR/in-situ FTIR, DFT-D binding/diffusion simulation analyses revealed the multi-site binding mode and the ultra-fast diffusion of SF6 within the channels. The proposed VTSA processes successfully met the dual stringent requirements of both environmental protection and electricity equipment operation: the SF6 recovery of 99.91% accompanied with a SF6 purity/working capacity of 99.91%/2.1 mmol/g, which significantly outperformed the industrial employed adsorbent zeolite 13X and showed only 18.7% the energy consumption of the cryogenic distillation.https://doi.org/10.1038/s41467-025-56031-5 |
| spellingShingle | Jinjian Li Yuting Chen Tian Ke Yuanyuan Jin Rongrong Fan Guihong Xu Liu Yang Zhiguo Zhang Zongbi Bao Qilong Ren Qiwei Yang Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites Nature Communications |
| title | Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites |
| title_full | Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites |
| title_fullStr | Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites |
| title_full_unstemmed | Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites |
| title_short | Efficient continuous SF6/N2 separation using low-cost and robust metal-organic frameworks composites |
| title_sort | efficient continuous sf6 n2 separation using low cost and robust metal organic frameworks composites |
| url | https://doi.org/10.1038/s41467-025-56031-5 |
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