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A solvent having switchable hydrophilicity
Abstract
A new kind of switchable solvent, a switchable-hydrophilicity solvent, is hydrophobic and has very low miscibility with water when in air but is hydrophilic and has complete miscibility with water when under an atmosphere of CO2. We report here the first example of such a solvent, N,N,N′-tributylpentanamidine. Solvents such as these could be used for the extraction of low-polarity organic products, such as vegetable oils, followed by the removal of the solvent from the product by carbonated water. Carbonated water is able to extract the solvent from the product because the CO2 converts the solvent to its hydrophilic form. The solvent can then be separated from the carbonated water upon removal of the CO2, because this removal triggers the conversion of the solvent back to its hydrophobic, water-immiscible form. Importantly, distillation is not required for removal of the solvent from the product.
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Citations
Cited by
Green and sustainable solvents in chemical processes
Clarke, C. J., Tu, W.-C., Levers, O., Bröhl, A., & Hallett, J. P. (2018) · Chemical Reviews · doi:10.1021/acs.chemrev.7b00571 · Cited by 2,071
Conversion of Microalgae to Biofuel
Suali, E., & Sarbatly, R. (2012) · Renewable and Sustainable Energy Reviews · doi:10.1016/j.rser.2012.03.047 · Cited by 456
Lin, S., & Theato, P. (2013) · Macromolecular Rapid Communications · doi:10.1002/marc.201300288 · Cited by 277
Design and evaluation of switchable-hydrophilicity solvents
Vanderveen, J. R., Durelle, J., & Jessop, P. G. (2014) · Green Chem. · doi:10.1039/c3gc42164c · Cited by 251
Self-citationRecovery of β-carotene from pumpkin using switchable natural deep eutectic solvents
Stupar, A., Šeregelj, V., Ribeiro, B. D., Pezo, L., Cvetanović, A., Mišan, A., & Marrucho, I. (2021) · Ultrasonics Sonochemistry · doi:10.1016/j.ultsonch.2021.105638 · Cited by 179
Metadata
- Authors
- Jessop, P. G., Phan, L., Carrier, A., Robinson, S., Dürr, C. J., & Harjani, J. R.
- Venue
- Green Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2010
- Volume
- 12
- Issue
- 5
- Pages
- 809
- ISSN
- 1463-9262 (ISSN-L)
- 1463-9270
- OpenAlex
- W2053541600
- Cited by
- 329
- References
- 0
- FWCI
- 6.11
- Type
- journal article
- Language
- en
- Open access
- closed
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- Jessop, P. G., Phan, L., Carrier, A., Robinson, S., Dürr, C. J., & Harjani, J. R. (2010). A solvent having switchable hydrophilicity. Green Chemistry. https://doi.org/10.1039/b926885e
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