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Research Article

An ultra-stable microporous supramolecular framework with highly selective adsorption and separation of water over ethanol

Zhengyi Di1,2, Jiandong Pang1, Falu Hu1( ), Mingyan Wu1( ), Maochun Hong1
State Key Lab of Structure Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
University of Chinese Academy of Sciences, Beijing 100049, China
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Abstract

A microporous supramolecular framework with high water and thermal stability can selectively absorb water molecules over methanol or ethanol due to the suitable channels. The model separation test on columns shows that an ultra-pure ethanol (99.9%) can be obtained from the mixture of ethanol/water (95:5). Additionally, after refluxing the desolvated sample in 95% ethanol at 60 °C for 5 h, the purity of ethanol rises up to 97.43%, which is obviously higher than 96.56% for 4 Å molecular sieves.

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Keywords

supramolecular frameworksπ···π stacking interactionsmicroporosityethanol/water separationsingle-crystal-to-single-crystal (SCSC) transformations

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Nano Research
Volume 14 Issue 8,
August 2021
Pages 2584-2588
DOI: 10.1007/s12274-020-3258-y

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Cite this article:
Di Z, Pang J, Hu F, et al. An ultra-stable microporous supramolecular framework with highly selective adsorption and separation of water over ethanol. Nano Research, 2021, 14(8): 2584-2588. https://doi.org/10.1007/s12274-020-3258-y
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Microporosity Porosity

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Received: 08 September 2020
Revised: 19 November 2020
Accepted: 22 November 2020
Published: 09 January 2021
© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020