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A Microporous Metal‐Organic Framework with Channels Constructed from Nonpolar Aromatic Rings for the Selective Separation of Ethane/Ethylene Mixtures

A Microporous Metal‐Organic Framework with Channels Constructed from Nonpolar Aromatic Rings for... 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 C2H6/C2H4 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)(H2O)0.5] ⋅ 5DMA ⋅ 3H2O (Co‐TATB, H3TATB=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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ChemPlusChem Wiley

A Microporous Metal‐Organic Framework with Channels Constructed from Nonpolar Aromatic Rings for the Selective Separation of Ethane/Ethylene Mixtures

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Publisher
Wiley
Copyright
© 2022 Wiley‐VCH GmbH
eISSN
2192-6506
DOI
10.1002/cplu.202100482
Publisher site
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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 C2H6/C2H4 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)(H2O)0.5] ⋅ 5DMA ⋅ 3H2O (Co‐TATB, H3TATB=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.

Journal

ChemPlusChem – Wiley

Published: Mar 1, 2022

Keywords: ethane/ethylene separation; ethane-selective MOF; gas adsorption; metal-organic frameworks; nonpolar channels

References