Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic Framework
The separation of acetylene (C2H2) from carbon dioxide (CO2) and the purification of ethylene (C2H4) from C2H2 are quite essential processes for the chemical industry. However, these processes are challenging due to their similar physical properties, including molecule sizes and boiling points. Here...
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| Format: | Article |
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SAGE Publishing
2023-01-01
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| Series: | Adsorption Science & Technology |
| Online Access: | http://dx.doi.org/10.1155/2023/4740672 |
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| author | Lingzhi Yang Wenpeng Xie Qiuju Fu Liting Yan Shuo Zhang Huimin Jiang Liangjun Li Xin Gu Dandan Liu Pengcheng Dai Qingbin Zheng Xuebo Zhao |
| author_facet | Lingzhi Yang Wenpeng Xie Qiuju Fu Liting Yan Shuo Zhang Huimin Jiang Liangjun Li Xin Gu Dandan Liu Pengcheng Dai Qingbin Zheng Xuebo Zhao |
| author_sort | Lingzhi Yang |
| collection | DOAJ |
| description | The separation of acetylene (C2H2) from carbon dioxide (CO2) and the purification of ethylene (C2H4) from C2H2 are quite essential processes for the chemical industry. However, these processes are challenging due to their similar physical properties, including molecule sizes and boiling points. Herein, we report an N-rich cage-based microporous metal-organic framework (MOF), [Cd5(Tz)9](NO3) (termed as Cd-TZ, TZ stands for tetrazole), and its highly efficient separation of C2H2/CO2 and C2H2/C2H4. Single-component gas adsorption isotherms reveal that Cd-TZ exhibits high C2H2 adsorption capacity (3.10 mmol g-1 at 298 K and 1 bar). The N-rich cages in Cd-TZ can trap C2H2 with a higher isosteric heat of adsorption (40.8 kJ mol-1) than CO2 and C2H4 owing to the robust host-guest interactions between the noncoordinated N atoms and C2H2, which has been verified by molecular modeling studies. Cd-TZ shows a high IAST selectivity for C2H2/CO2 (8.3) and C2H2/C2H4 (13.3). The breakthrough simulations confirm the potential for separating C2H2/CO2 and the purification of C2H4 from C2H2. |
| format | Article |
| id | doaj-art-895ef85b15aa4fd092f61d6bac084ede |
| institution | DOAJ |
| issn | 2048-4038 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-895ef85b15aa4fd092f61d6bac084ede2025-08-20T02:42:59ZengSAGE PublishingAdsorption Science & Technology2048-40382023-01-01202310.1155/2023/4740672Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic FrameworkLingzhi Yang0Wenpeng Xie1Qiuju Fu2Liting Yan3Shuo Zhang4Huimin Jiang5Liangjun Li6Xin Gu7Dandan Liu8Pengcheng Dai9Qingbin Zheng10Xuebo Zhao11School of Materials Science and EngineeringInstitute of New EnergyInstitute of New EnergySchool of Materials Science and EngineeringSchool of Materials Science and EngineeringSchool of Materials Science and EngineeringInstitute of New EnergyInstitute of New EnergyInstitute of New EnergyInstitute of New EnergySchool of Science and EngineeringSchool of Materials Science and EngineeringThe separation of acetylene (C2H2) from carbon dioxide (CO2) and the purification of ethylene (C2H4) from C2H2 are quite essential processes for the chemical industry. However, these processes are challenging due to their similar physical properties, including molecule sizes and boiling points. Herein, we report an N-rich cage-based microporous metal-organic framework (MOF), [Cd5(Tz)9](NO3) (termed as Cd-TZ, TZ stands for tetrazole), and its highly efficient separation of C2H2/CO2 and C2H2/C2H4. Single-component gas adsorption isotherms reveal that Cd-TZ exhibits high C2H2 adsorption capacity (3.10 mmol g-1 at 298 K and 1 bar). The N-rich cages in Cd-TZ can trap C2H2 with a higher isosteric heat of adsorption (40.8 kJ mol-1) than CO2 and C2H4 owing to the robust host-guest interactions between the noncoordinated N atoms and C2H2, which has been verified by molecular modeling studies. Cd-TZ shows a high IAST selectivity for C2H2/CO2 (8.3) and C2H2/C2H4 (13.3). The breakthrough simulations confirm the potential for separating C2H2/CO2 and the purification of C2H4 from C2H2.http://dx.doi.org/10.1155/2023/4740672 |
| spellingShingle | Lingzhi Yang Wenpeng Xie Qiuju Fu Liting Yan Shuo Zhang Huimin Jiang Liangjun Li Xin Gu Dandan Liu Pengcheng Dai Qingbin Zheng Xuebo Zhao Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic Framework Adsorption Science & Technology |
| title | Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic Framework |
| title_full | Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic Framework |
| title_fullStr | Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic Framework |
| title_full_unstemmed | Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic Framework |
| title_short | Highly Selective Separation of C2H2/CO2 and C2H2/C2H4 in an N-Rich Cage-Based Microporous Metal-Organic Framework |
| title_sort | highly selective separation of c2h2 co2 and c2h2 c2h4 in an n rich cage based microporous metal organic framework |
| url | http://dx.doi.org/10.1155/2023/4740672 |
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