Citation: Huirong Chen, Yingzhi He, Yan Han, Jianbo Hu, Jiantang Li, Yunjia Jiang, Basem Keshta, Lingyao Wang, Yuanbin Zhang. A new SIFSIX anion pillared cage MOF with crs topological structure for efficient C2H2/CO2 separation[J]. Chinese Journal of Structural Chemistry, ;2025, 44(2): 100508. doi: 10.1016/j.cjsc.2024.100508 shu

A new SIFSIX anion pillared cage MOF with crs topological structure for efficient C2H2/CO2 separation

Due to the similar physicochemical properties of acetylene (C2H2) and carbon dioxide (CO2), separating C2H2 from a CO2/C2H2 mixture poses a significant challenge in the petrochemical industry. Herein, we successfully synthesized a novel SiF62- anion pillared cage metal-organic framework ZNU-15 possessing a new crs topological structure for the selective capture of C2H2. As a linear bidentate linker, the fluorinated SiF62- anion partitions the pores into various sized cages. ZNU-15 displays moderate adsorption for C2H2 with a capacity of 36.0 cm3 g-1 at 298 K and 1 bar, which is 2.7 times higher than the CO2 uptake. The IAST selectivity of C2H2/CO2 for ZNU-15 at 298 K and 100 kPa is 10.5, surpassing that of most reported materials. The Qst value for C2H2 and CO2 at zero coverage are 54.0 and 42.8 kJ/mol, respectively. Moreover, breakthrough experimental tests show that ZNU-15 is capable of effectively separating C2H2 from a C2H2/CO2 mixture. Theoretical calculations further indicate that C2H2 is preferentially trapped by the small cage with four cooperative hydrogen bonds.
1. [1]
  Yongheng Ren , Yang Chen , Hongwei Chen , Lu Zhang , Jiangfeng Yang , Qi Shi , Lin-Bing Sun , Jinping Li , Libo Li . Electrostatically driven kinetic Inverse CO2/C2H2 separation in LTA-type zeolites. Chinese Journal of Structural Chemistry, 2024, 43(10): 100394-100394. doi: 10.1016/j.cjsc.2024.100394
2. [2]
  Fahui Xiang , Lu Li , Zhen Yuan , Wuji Wei , Xiaoqing Zheng , Shimin Chen , Yisi Yang , Liangji Chen , Zizhu Yao , Jianwei Fu , Zhangjing Zhang , Shengchang Xiang . Enhanced C₂H₂/CO₂ separation in tetranuclear Cu(Ⅱ) cluster-based metal-organic frameworks by adjusting divider length of pore space partition. Chinese Chemical Letters, 2025, 36(3): 109672-. doi: 10.1016/j.cclet.2024.109672
3. [3]
  Jingtai Bi , Yupeng Cheng , Mengmeng Sun , Xiaofu Guo , Shizhao Wang , Yingying Zhao . Efficient and selective photocatalytic nitrite reduction to N₂ through CO₂ anion radical by eco-friendly tartaric acid activation. Chinese Chemical Letters, 2024, 35(11): 109639-. doi: 10.1016/j.cclet.2024.109639
4. [4]
  Liang Ma , Zhou Li , Zhiqiang Jiang , Xiaofeng Wu , Shixin Chang , Sónia A. C. Carabineiro , Kangle Lv . Effect of precursors on the structure and photocatalytic performance of g-C3N4 for NO oxidation and CO2 reduction. Chinese Journal of Structural Chemistry, 2024, 43(11): 100416-100416. doi: 10.1016/j.cjsc.2024.100416
5. [5]
  Yi Luo , Lin Dong . Multicomponent remote C(sp²)-H bond addition by Ru catalysis: An efficient access to the alkylarylation of 2H-imidazoles. Chinese Chemical Letters, 2024, 35(10): 109648-. doi: 10.1016/j.cclet.2024.109648
6. [6]
  Fangfang WANG , Jiaqi CHEN , Weiyin SUN . CuBi@Cu-MOF composite catalysts for electrocatalytic CO₂ reduction to HCOOH. Chinese Journal of Inorganic Chemistry, 2025, 41(1): 97-104. doi: 10.11862/CJIC.20240350
7. [7]
  Qin Cheng , Ming Huang , Qingqing Ye , Bangwei Deng , Fan Dong . Indium-based electrocatalysts for CO₂ reduction to C1 products. Chinese Chemical Letters, 2024, 35(6): 109112-. doi: 10.1016/j.cclet.2023.109112
8. [8]
  Xuejiao Wang , Suiying Dong , Kezhen Qi , Vadim Popkov , Xianglin Xiang . Photocatalytic CO₂ Reduction by Modified g-C₃N₄. Acta Physico-Chimica Sinica, 2024, 40(12): 2408005-. doi: 10.3866/PKU.WHXB202408005
9. [9]
  Qian-Qian Tang , Li-Fang Feng , Zhi-Peng Li , Shi-Hao Wu , Long-Shuai Zhang , Qing Sun , Mei-Feng Wu , Jian-Ping Zou . Single-atom sites regulation by the second-shell doping for efficient electrochemical CO₂ reduction. Chinese Chemical Letters, 2024, 35(9): 109454-. doi: 10.1016/j.cclet.2023.109454
10. [10]
  Tinghui Yang , Min Kuang , Jianping Yang . Mesoporous CuCe dual-metal catalysts for efficient electrochemical reduction of CO2 to methane. Chinese Journal of Structural Chemistry, 2024, 43(8): 100350-100350. doi: 10.1016/j.cjsc.2024.100350
11. [11]
  Di Wang , Qing-Song Chen , Yi-Ran Lin , Yun-Xin Hou , Wei Han , Juan Yang , Xin Li , Zhen-Hai Wen . Tuning strategies and electrolyzer design for Bi-based nanomaterials towards efficient CO2 reduction to formic acid. Chinese Journal of Structural Chemistry, 2024, 43(8): 100346-100346. doi: 10.1016/j.cjsc.2024.100346
12. [12]
  Xiangyu Chen , Aihao Xu , Dong Wei , Fang Huang , Junjie Ma , Huibing He , Jing Xu . Atomic cerium-doped CuO_x catalysts for efficient electrocatalytic CO₂ reduction to CH₄. Chinese Chemical Letters, 2025, 36(1): 110175-. doi: 10.1016/j.cclet.2024.110175
13. [13]
  Yi Liu , Zhe-Hao Wang , Guan-Hua Xue , Lin Chen , Li-Hua Yuan , Yi-Wen Li , Da-Gang Yu , Jian-Heng Ye . Photocatalytic dicarboxylation of strained C–C bonds with CO₂ via consecutive visible-light-induced electron transfer. Chinese Chemical Letters, 2024, 35(6): 109138-. doi: 10.1016/j.cclet.2023.109138
14. [14]
  Xue Dong , Xiaofu Sun , Shuaiqiang Jia , Shitao Han , Dawei Zhou , Ting Yao , Min Wang , Minghui Fang , Haihong Wu , Buxing Han . 碳修饰的铜催化剂实现安培级电流电化学还原CO₂制C₂₊产物. Acta Physico-Chimica Sinica, 2025, 41(3): 2404012-. doi: 10.3866/PKU.WHXB202404012
15. [15]
  Xiaodan Wang , Yingnan Liu , Zhibin Liu , Zhongjian Li , Tao Zhang , Yi Cheng , Lecheng Lei , Bin Yang , Yang Hou . Highly efficient electrosynthesis of H₂O₂ in acidic electrolyte on metal-free heteroatoms co-doped carbon nanosheets and simultaneously promoting Fenton process. Chinese Chemical Letters, 2024, 35(7): 108926-. doi: 10.1016/j.cclet.2023.108926
16. [16]
  Zhijie Zhang , Xun Li , Huiling Tang , Junhao Wu , Chunxia Yao , Kui Li . Cs₂CuBr₄ perovskite quantum dots confined in mesoporous CuO framework as a p-n type S-scheme heterojunction for efficient CO₂ photoconversion. Chinese Chemical Letters, 2024, 35(11): 109700-. doi: 10.1016/j.cclet.2024.109700
17. [17]
  Hong Dong , Feng-Ming Zhang . Covalent organic frameworks for artificial photosynthetic diluted CO2 reduction. Chinese Journal of Structural Chemistry, 2024, 43(7): 100307-100307. doi: 10.1016/j.cjsc.2024.100307
18. [18]
  Ping Wang , Tianbao Zhang , Zhenxing Li . Reconstruction mechanism of Cu surface in CO2 reduction process. Chinese Journal of Structural Chemistry, 2024, 43(8): 100328-100328. doi: 10.1016/j.cjsc.2024.100328
19. [19]
  Muhammad Humayun , Mohamed Bououdina , Abbas Khan , Sajjad Ali , Chundong Wang . Designing single atom catalysts for exceptional electrochemical CO2 reduction. Chinese Journal of Structural Chemistry, 2024, 43(1): 100193-100193. doi: 10.1016/j.cjsc.2023.100193
20. [20]
  Zixuan Zhu , Xianjin Shi , Yongfang Rao , Yu Huang . Recent progress of MgO-based materials in CO₂ adsorption and conversion: Modification methods, reaction condition, and CO₂ hydrogenation. Chinese Chemical Letters, 2024, 35(5): 108954-. doi: 10.1016/j.cclet.2023.108954

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