Influence of chloride, water, and organic solvents on the physical properties of ionic liquids
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Abstract We report here the first systematic study of the effect of impurities and additives (e.g., water, chloride, and cosolvents) on the physical properties of room-temperature ionic liquids. Remarkably, it was discovered that the viscosity of mixtures was dependent mainly on the mole fraction of added molecular solvents and only to a lesser extent upon their identity, allowing viscosity changes during the course of a reaction to be entirely predictable. While the addition of such molecular solvents decreases the viscosity and density, chloride impurities, arising from the preparation of the ionic liquids, increase viscosity dramatically. The commonly used methods of preparation were validated with respect to chloride impurity.
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Ionic liquids can be customized with pre-selected characteristics such as high thermal stability, moisture stability, and ion selectivity by careful selection of the cation and anion.
“Perhaps the most attractive feature of ILs for ED Li recovery is that they can be customized with pre-selected characteristics such as high thermal stability, moisture stability, and ion selectivity, by careful selection of the cation and anion (Seddon et al., 2000; Seddon et al., 2002; Deetlefs et al., 2006; Zavahir et al., 2021).”
From A review of technologies for direct lithium extraction from low Li+ concentration aqueous solutions (2022) · cites this paper as Seddon et al., 2000
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References 2 · Cited by 2,293
- Authors
- Seddon, K. R., Stark, A., & Torres, M.-J.
- Affiliations
- Queen's University Belfast (GB)
- ORCID
- Stark, Annegret
- Venue
- Pure and Applied Chemistry
- Publisher
- Walter de Gruyter GmbH
- Published
- 2000-01-01
- Volume
- 72
- Issue
- 12
- Pages
- 2275-2287
- ISSN
- 0033-4545 (ISSN-L)
- 1365-3075
- OpenAlex
- W2103207805
- Cited by
- 2,293
- References
- 2
- Citations by year
- 2026: 35 · 2025: 35 · 2024: 45 · 2023: 41 · 2022: 59 · 2021: 58 · 2020: 90 · 2019: 91 · 2018: 94 · 2017: 96 · 2016: 132 · 2015: 120 · 2014: 136 · 2013: 144 · 2012: 163
- FWCI
- 22.37
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Pure and Applied Chemistry (publishedVersion)
- Research Portal (Queen's University Belfast) (submittedVersion)
- Funders
- Royal Academy of Engineering
- BP Global
- European Commission
- Queen's University
- Engineering and Physical Sciences Research Council
- Topics
- Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
- Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Thermodynamic properties of mixtures
- Physical Sciences › Engineering › Mechanical Engineering › Lubricants and Their Additives
- Keywords
- room temperature ionic liquids, chloride impurity, water contaminants, organic cosolvents, viscosity, density, ionic liquid mixtures, molecular solvents
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