期刊
CHEMICAL ENGINEERING SCIENCE
卷 129, 期 -, 页码 69-77出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2015.02.023
关键词
Ionic liquid screening; Solvent-sensitive systems; Ionic liquid solubility; COSMO-RS; Extractive desulfurization
资金
- National Sciences Foundation of China [NSFC U1462123]
- Major State Basic Research Development Program of China [2012CB720502]
- Fundamental Research Funds for the Central Universities of China
- 111 Project [B08021]
- Planck Partner Group
- Max Planck Society, Germany
When applying ionic liquids (Its) for solvent-sensitive extraction systems, ILs dissolved in the raffinate may lead to severe subsequent problems or a significant reduction in product quality, and thus should be particularly concerned. To screen qualified IL solvent for such systems, a rigorous criterion considering both its solubility in the raffinate and extractive ability is established. The COSMO-RS model is used to evaluate the effect of anions and cations, and suggest potential ILs meeting the criterion. Afterwards, the solubility and extractive ability of candidate ILs are investigated by experiments to further confirm their suitability. The proposed solvent screening method is exemplified for the extractive desulfurization process. [C(4)mim][H2PO4] is pre-selected by the screening method, and its high extractive performance is experimentally verified. (C) 2013 Elsevier Ltd. All rights reserved.
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