Molecular mechanism, liquid–liquid equilibrium and process design of separating octane-n-butanol system by ionic liquids

Liang, Shisheng; Li, Huiyuan; Fan, Dingchao; Liu, Yangyang; Wang, Xianlong; Zhu, Zhaoyou; Wang, Yinglong; Qi, Jianguang

doi:10.1016/j.molliq.2022.118974

Cited by 11 publications

(2 citation statements)

References 34 publications

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“…Samples of the upper and lower phases are carefully withdrawn with a syringe and diluted with methanol, which are then analyzed using an HPLC system (SHIMADZU LC-2010AHT) equipped with an ODS-SP (5 μm 4.6 × 250 mm) SinoChrom column. External disturbances should be avoided during the entire sampling process to avert experimental errors . In the HPLC analysis, methanol is used as the mobile phase while 292 and 215 nm are set as the detection wavelengths of α-tocopherol and methyl linoleate.…”

Section: Methods For Des Screeningmentioning

confidence: 99%

“…External disturbances should be avoided during the entire sampling process to avert experimental errors. 52 In the HPLC analysis, methanol is used as the mobile phase while 292 and 215 nm are set as the detection wavelengths of αtocopherol and methyl linoleate. After knowing the content of α-tocopherol and methyl linoleate, the content of DESs in both phases is estimated by the normalization method.…”

Section: ■ Methods For Des Screeningmentioning

confidence: 99%

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Rational Screening of Deep Eutectic Solvents for the Direct Extraction of α-Tocopherol from Deodorized Distillates

Cheng

Qin

Cheng

et al. 2022

ACS Sustainable Chem. Eng.

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As traditional methods for retrieving natural vitamin E suffer from harsh operating conditions and poor process performance, seeking more energy-efficient and sustainable alternative approaches is highly desirable. In this work, deep eutectic solvents (DESs) as a class of emerging media are particularly proposed for the extraction of vitamin E (modeled by α-tocopherol) from deodorized distillates under mild operating conditions. To select DESs suitable for this task, a rational screening method is presented which covers the thermodynamic evaluation of individual components and component combinations, the assessment of environment, health, and safety (EHS) impacts of components, and the eutectic behavior estimation of component combinations. Based on experimentally reported DESs from the literature, individual components as well as random combinations of potential hydrogen bond acceptors (HBAs) and hydrogen bond donors (HBDs) are successively prescreened by COSMO-RS predicted thermodynamic properties. Five EHS-related properties of HBDs are assessed by VEGA. The formation of eutectics and the corresponding operating window of different HBA–HBD combinations are estimated by COSMO-RS solid–liquid equilibria prediction. Experiments are finally performed with the top-ranked DESs, which well validates the reliability of the screening method and identifies tetrabutylphosphonium chloride–ethanolamine (2:1) as a suitable DES for the α-tocopherol extraction.

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Section: Methods For Des Screeningmentioning

confidence: 99%

Section: ■ Methods For Des Screeningmentioning

confidence: 99%