ZIF-8-porous ionic liquids for the extraction of 2,2,3,3-tetrafluoro-1-propanol and water mixture
- 13 April 2021
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in New Journal of Chemistry
- Vol. 45 (19), 8557-8562
- https://doi.org/10.1039/d1nj01053k
Abstract
The design of stable ionic liquids (ILs) has become crucial for efficient liquid-liquid extraction (LLE) of alcohol and water. Porous ionic liquids (PILs), as a special class of ILs, have attracted attention by virtue of their unique porous structure and ILs characteristics. In this research, series of zeolitic imidazolate framework-8 based porous ionic liquids (ZIF-8-PILs) were synthesized by the simple solution mixing of zeolitic imidazolate framework-8 (ZIF-8) and rationally designed ILs. The introduction of ZIF-8 resulted in a unique liquid porous structure and molecular sieve for ZIF-8-PILs. The improved extraction properties endowed ZIF-8/[Bpy][NTf2] with more efficiency for the separation of 2,2,3,3-tetrafluoro-1-propanol (TFP) and water with 88.1 % TFP extraction rate and steady reuse. The excellent extraction performance of ZIF-8-PILs is discussed in relation to its textural property and unique intermolecular interaction.Funding Information
- National Natural Science Foundation of China (21978155)
- Qingdao University (QUSTHX202009)
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