Date
2021
Abstract
Selective separation of propyne/propadiene mixture to obtain pure propadiene (allene), an essential feedstock for organic synthesis, remains an unsolved challenge in the petrochemical industry, thanks mainly to their similar physicochemical properties. We herein introduce a convenient and energy-efficient physisorptive approach to achieve propyne/propadiene separation using microporous metal-organic frameworks (MOFs). Specifically, HKUST-1, one of the most widely studied high surface area MOFs that is available commercially, is found to exhibit benchmark performance (propadiene production up to 69.6 cm3/g, purity > 99.5%) as verified by dynamic breakthrough experiments. Experimental and modeling studies provide insight into the performance of HKUST-1 and indicate that it can be attributed to a synergy between thermodynamics and kinetics that arises from abundant open metal sites and cage-based molecular traps in HKUST-1.
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Description
peer-reviewed
Publisher
Nature Publishing Group
Citation
Nature Communications;12, 5768
Collections
Chemical Sciences
Bernal Institute
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Peng_2021_Efficient.pdf
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Keywords
trimethylenecyclohexane, propadiene
ULRR Identifiers
https://hdl.handle.net/10344/10646
 https://doi.org/10.34961/5258
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Funding Information
Science Foundation Ireland (SFI), National Natural Science Foundation of China
Sustainable Development Goals
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