The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Influence of Structural Variation in Room-Temperature Ionic Liquids on the Selectivity and Efficiency of Competitive Alkali Metal Salt Extraction by a Crown Ether
Abstract
An improved method for the preparation of 1-alkyl-3-methylimidazolium hexafluorophosphates provides a series of room-temperature ionic liquids (RTILs) in which the 1-alkyl group is varied systematically from butyl to nonyl. For competitive solvent extraction of aqueous solutions of alkali metal chlorides with solutions of dicyclohexano-18-crown-6 (DC18C6) in these RTILs, the extraction efficiency generally diminished as the length of the 1-alkyl group was increased. Under the same conditions, extraction of alkali metal chlorides into solutions of DC18C6 in chloroform, nitrobenzene, and 1-octanol was undetectable. The extraction selectivity order for DC18C6 in the RTILs was K+ > Rb+ > Cs+ > Na+ > Li+. As the alkyl group in the RTIL was elongated, the K+/ Rb+ and K+/Cs+ selectivities exhibited general increases with the larger enhancement for the latter. For DC18C6 in 1-octyl-3-methylimidazolium hexafluorophosphate, the alkali metal cation extraction selectivity and efficiency were unaffected by variation of the aqueous-phase anion from chloride to nitrate to sulfate.
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Citations
Cites
pH-Dependent partitioning in room temperature ionic liquids
Visser, A. E., Swatloski, R. P., & Rogers, R. D. (2000) · Green Chemistry · doi:10.1039/a908888a · Cited by 281
Cited by
Use of ionic liquids as ‘green’ solvents for extractions
Zhao, H., Xia, S., & Ma, P. (2005) · Journal of Chemical Technology & Biotechnology · doi:10.1002/jctb.1333 · Cited by 873
Ionic liquids in analytical chemistry
Sun, P., & Armstrong, D. W. (2010) · Analytica Chimica Acta · doi:10.1016/j.aca.2009.12.007 · Cited by 727
Use of ab Initio Calculations toward the Rational Design of Room Temperature Ionic Liquids
Turner, E. A., Pye, C. C., & Singer, R. D. (2003) · The Journal of Physical Chemistry A · doi:10.1021/jp021694w · Cited by 373
Chen, Y., Guo, Z., Wang, X., & Qiu, C. (2008) · Journal of Chromatography A · doi:10.1016/j.chroma.2007.10.026 · Cited by 316
Dietz, M. L., Dzielawa, J. A., Laszak, I., Young, B. A., & Jensen, M. P. (2003) · Green Chem. · doi:10.1039/b310507p · Cited by 276
Metadata
- Authors
- Chun, S., Dzyuba, S. V., & Bartsch, R. A.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-06-21
- Volume
- 73
- Issue
- 15
- Pages
- 3737-3741
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2002718948
- Cited by
- 520
- References
- 1
- FWCI
- 12.91
- Type
- journal article
- Language
- en
- Open access
- closed
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- Chun, S., Dzyuba, S. V., & Bartsch, R. A. (2001). Influence of Structural Variation in Room-Temperature Ionic Liquids on the Selectivity and Efficiency of Competitive Alkali Metal Salt Extraction by a Crown Ether. Analytical Chemistry. https://doi.org/10.1021/ac010061v
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