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Protic Ionic Liquid‐Based Deep Eutectic Solvents with Multiple Hydrogen Bonding Sites for Efficient Absorption of NH3
Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China College of Chemical Engineering and Environment, China. University of Petroleum, Beijing, Beijing, China.
Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China. College of Chemical and Engineering, University of Chinese Academy of Sciences, Beijing, China.
Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Energy Science.ORCID iD: 0000-0003-1394-7925
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2020 (English)In: AIChE Journal, ISSN 0001-1541, E-ISSN 1547-5905, no e16253Article in journal (Refereed) Epub ahead of print
Abstract [en]

The emerging of ionic liquids (ILs) provides an efficient and sustainable way to separate and recover NH3 due to their unique properties. However, the solid or highly viscous ILs are not suitable for traditional scrubbing. Therefore, an effective strategy was proposed by combining the protic ILs (PILs) with acidic H and low viscous ethylene glycol (EG) to form IL‐based deep eutectic solvents (DESs) for NH3 absorption. The results indicated that these PIL‐based DESs not only have fast absorption rate, but also exhibit exceptional NH3 capacity and excellent recyclability. The highest mass capacity of 211 mg NH3/g DES was achieved by [Im][NO3]/EG with molar ratio of 1:3, and was higher than all the reported ILs and IL‐based DESs, which was originated from multiple hydrogen bonding between acidic H and hydroxyl groups of the DESs and NH3. This work will provide useful idea for designing IL‐based solvents for NH3 separation applications.

Place, publisher, year, edition, pages
American Institute of Chemical Engineers, 2020. no e16253
Keywords [en]
deep eutectic solvents, hydrogen bonding, multiple, NH3 absorption, protic ionic liquids
National Category
Energy Engineering
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-78771DOI: 10.1002/aic.16253Scopus ID: 2-s2.0-85084552641OAI: oai:DiVA.org:ltu-78771DiVA, id: diva2:1428156
Available from: 2020-05-04 Created: 2020-05-04 Last updated: 2020-05-28

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Liu, Yanrong

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