期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 23, 页码 12876-12882出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202100090
关键词
carbon capture; chimisorption; metal– organic frameworks; phosphonium ionic liquids; porous ionic liquids
资金
- Université de Lyon [ANR-16-IDEX-0005] Funding Source: Medline
Porous ionic liquids based on ZIF-8 and phosphonium salts show increased carbon dioxide absorption capacity at low pressures. By combining MOFs with ionic liquids, the absorption of carbon dioxide can be greatly enhanced, leading to the development of high-performance liquid materials for effective low pressure carbon capture.
Porous ionic liquids are non-volatile, versatile materials that associate porosity and fluidity. New porous ionic liquids, based on the ZIF-8 metal-organic framework and on phosphonium acetate or levulinate salts, were prepared and show an increased capacity to absorb carbon dioxide at low pressures. Porous suspensions based on phosphonium levulinate ionic liquid absorb reversibly 103 % more carbon dioxide per mass than pure ZIF-8 at 1 bar and 303 K. We show how the rational combination of MOFs with ionic liquids can greatly enhance low pressure CO2 absorption, paving the way towards a new generation of high-performance, readily available liquid materials for effective low pressure carbon capture.
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