One-step Ethylene Purification from an Acetylene/Ethylene/Ethane Ternary Mixture by Cyclopentadiene Cobalt-Functionalized Metal-Organic Frameworks.

Published on May 10, 2021in Angewandte Chemie12.959
· DOI :10.1002/ANIE.202100782
Yutong Wang14
Estimated H-index: 14
(China University of Petroleum),
Chunlian Hao2
Estimated H-index: 2
(China University of Petroleum)
+ 12 AuthorsDaofeng Sun71
Estimated H-index: 71
(China University of Petroleum)
Sources
Abstract
The separation of ethylene (C 2 H 4 ) from a mixture of ethane (C 2 H 6 ), ethylene (C 2 H 4 ), and acetylene (C 2 H 2 ) 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 C 2 H 2 /C 2 H 4 /C 2 H 6 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.
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