A Microporous Metal‐Organic Framework with Channels Constructed from Nonpolar Aromatic Rings for the Selective Separation of Ethane/Ethylene Mixtures. Issue 3 (10th January 2022)

• Record Type: Journal Article
• Authors: Liu, Lizhen; Bo, Yiyang; Zhuang, Weitang; Xie, Zhixuan; Yang, Yisi; Lin, Quanjie; Chen, Dinggui; Yao, Zizhu; Xiang, Shengchang
• Is Part Of: ChemPlusChem. Volume 87:Issue 3(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-01-10
• Subjects: ethane/ethylene separation -- ethane-selective MOF -- gas adsorption -- metal-organic frameworks -- nonpolar channels; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.202100482
• Languages: English
• ISSNs: 2192-6506

Abstract

Abstract: The separation of ethane and ethylene is an important segment in the purification of chemical raw materials in industrial production. However, due to their similar physical and chemical properties, the separation of C2 H6 /C2 H4 is challenging. Herein, we report the selective adsorption of ethane over ethylene by a microporous metal‐organic framework with nonpolar aromatic rings constructed channels, [Co1.5 (TATB)(H2 O)0.5 ] ⋅ 5DMA ⋅ 3H2 O (Co‐TATB, H3 TATB=4, 4', 4''‐(s‐triazine‐2, 4, 6‐triyl) tribenzoic acid). This compound showed a higher ethane capacity than that of ethylene, and a low adsorption enthalpy of ethane only of 19.4 kJ mol −1 . Further, the dynamic breakthrough experimental confirmed that Co‐TATB can selectively adsorb ethane from ethane/ethylene separation. Abstract : A microporous metal‐organic framework affords nonpolar channels for the selective separation of ethane/ethylene mixtures. This compound shows a higher ethane capacity than that of ethylene, and a low adsorption enthalpy of ethane only of 19.4 kJ mol −1 . Further, the ideal adsorbed solution theory (IAST) and dynamic breakthrough experimental confirm that Co‐TATB can selectively adsorb ethane from ethane/ethylene separation.