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High Resolution Image Download MS PowerPoint Slide The ability of a number of ionic liquids to extract 1,3-propanediol and 2,3-butanediol from aqueous solution was investigated. A range of hydrophobic ionic liquids were prepared and compared. The long chain phosphonium salts containing the trihexyltetradecyl phosphonium [P 66614 ] cation exhibited promising extraction behavior. Among them, [P 66614 ] [octanesulfonate (C 8 SO 3 )] combined high hydrophobicity, good stability, and relatively high extraction efficiency with the distribution coefficient D BDO = 0.390 and extraction selectivity S BDO = 4.83 (2,3-butanediol) and D PDO = 0.219 and S PDO = 2.65 (1,3-propanediol) at 25 °C. Additionally, this material exhibited good compatibility with the fermentation process, facilitating its use in bioprocesses.
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Liu et al. (2017) studied this question.
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