One‐step Ethylene Purification from an Acetylene/Ethylene/Ethane Ternary Mixture by Cyclopentadiene Cobalt‐Functionalized Metal–Organic Frameworks. Issue 20 (30th March 2021)

• Record Type: Journal Article
• Authors: Wang, Yutong; Hao, Chunlian; Fan, Weidong; Fu, Mingyue; Wang, Xiaokang; Wang, Zhikun; Zhu, Lei; Li, Yue; Lu, Xiaoqing; Dai, Fangna; Kang, Zixi; Wang, Rongming; Guo, Wenyue; Hu, Songqing; Sun, Daofeng
• Is Part Of: Angewandte Chemie international edition. Volume 60:Issue 20(2021)
• Page Start: 11350
• Page End: 11358
• Publication Date: 2021-03-30
• Subjects: cobalt -- ethylene purification -- metal–organic frameworks (MOFs) -- one-step purification -- ternary gas mixture; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202100782
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The separation of ethylene (C2 H4 ) from a mixture of ethane (C2 H6 ), ethylene (C2 H4 ), and acetylene (C2 H2 ) at normal temperature and pressure is a significant challenge. The sieving effect of pores is powerless due to the similar molecular size and kinetic diameter of these molecules. We report a new modification method based on a stable ftw topological Zr‐MOF platform (MOF‐525 ). Introduction of a cyclopentadiene cobalt functional group led to new ftw‐type MOFs materials (UPC‐612 and UPC‐613 ), which increase the host‐guest interaction and achieve efficient ethylene purification from the mixture of hydrocarbon gases. The high performance of UPC‐612 and UPC‐613 for C2 H2 /C2 H4 /C2 H6 separation has been verified by gas sorption isotherms, density functional theory (DFT), and experimentally determined breakthrough curves. This work provides a one‐step separation of the ternary gas mixture and can further serve as a blueprint for the design and construction of function‐oriented porous structures for such applications. Abstract : A new modification method for metal–organic frameworks (MOFs) can realize one‐step purification of ethylene in ternary gas mixture with a single adsorbent.