Date
2019
Abstract
Simultaneous removal of trace amounts of propyne and propadiene from propylene is an important but challenging industrial process. We report herein a class of microporous metalâ organic frameworks (NKMOFâ 1â M) with exceptional water stability and remarkably high uptakes for both propyne and propadiene at low pressures. NKMOFâ 1â M separated a ternary propyne/propadiene/propylene (0.5 : 0.5 : 99.0) mixture with the highest reported selectivity for the production of polymerâ grade propylene (99.996 %) at ambient temperature, as attributed to its strong binding affinity for propyne and propadiene over propylene. Moreover, we were able to visualize propyne and propadiene molecules in the singleâ crystal structure of NKMOFâ 1â M through a convenient approach under ambient conditions, which helped to precisely understand the binding sites and affinity for propyne and propadiene. These results provide important guidance on using ultramicroporous MOFs as physisorbent materials.
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Description
peer-reviewed
Publisher
John Wiley & Sons, Inc.
Citation
Angewandte Chemie International Edition;58 (30), pp. 10209-10214
Collections
Bernal Institute
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Zaworotko_2019_Robost.pdf
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Keywords
metal-organic frameworks, ternary gas separtion, propylene purification, binding site, compuation
ULRR Identifiers
https://hdl.handle.net/10344/8112
 https://doi.org/10.34961/4901
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Funding Information
National Natural Science Foundation of China
Sustainable Development Goals
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