Aliphatic amino acids as possible hydrogen bond donors for preparing eutectic solvents

Mjalli, Farouq S.; Al-Azzawi, Marwah

doi:10.1016/j.molliq.2021.115637

Cited by 16 publications

(7 citation statements)

References 47 publications

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“…The most prevalent HBD used in DES synthesis is glycerol. However, synthesis of each type of DES predominantly requires a suitable choice of donors and acceptors. , If the target is the formation of low-viscosity eutectic mixtures, then a combination of diols and ammonium salts would be preferable. Similarly, the formation of NADES with higher viscosity results from combining carbohydrates with quaternary ammonium salts or urea.…”

Section: Synthesis and Characterization Of Desmentioning

confidence: 99%

Sustainable and Green Engineering Insights on Deep Eutectic Solvents toward the Extraction of Nutraceuticals

Balaraman

Rangabhashiyam

Rangarajan

et al. 2021

ACS Sustainable Chem. Eng.

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Deep eutectic solvents (DES) hold promising potential in the selective purification of bioactive molecules from various complex sources. Although they are increasingly considered as a biocompatible extraction medium, adding the task-specific functionality, which makes DES distinctive for the selective extraction of compounds, requires appropriate tailoring of their physical properties. This critical review investigates the influential physical properties of deep eutectic solvents and their effect on various sustainable extraction methodsincluding both solid–liquid and liquid–liquidfor the separation of nutraceuticals. Various methods by which DES are employed as solvents, cosolvents, or as adjuvants in different extraction systems are compared in terms of their efficiency and selectivity. Furthermore, the correspondence between the type of DES and the nature of target nutraceuticals to be extracted is also discussed. The Review highlights the key achievements and future prospects of employing DES along with the lacunae in the current investigations and proposed various approaches for sustainable applications.

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Section: Synthesis and Characterization Of Desmentioning

confidence: 99%

Sustainable and Green Engineering Insights on Deep Eutectic Solvents toward the Extraction of Nutraceuticals

Balaraman

Rangabhashiyam

Rangarajan

et al. 2021

ACS Sustainable Chem. Eng.

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“…This can be easily determined from the stretching vibrations of the C–H and C–C rings. The C–H stretching vibration is typically observed at frequencies higher than 3000 cm −1 and is often observed as a band with low to moderate intensity when compared to the stretching aliphatic C–H bonds [ 65 ]. Here, the C–H stretching vibration of the Benzofurazn ring is found in the IR spectrum at 3227 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

A theoretical and electrochemical impedance spectroscopy study of the adsorption and sensing of selected metal ions by 4-morpholino-7-nitrobenzofuran

Chérif,

Gassoumi,

Ayachi

et al. 2024

Heliyon

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“…At 20 °C, with a 1:1 molar ratio of choline chloride to D-glucose, the surface tension (70.4 mN·m −1 ) was lower compared to that for a 2.5:1 molar ratio (75.0 mN·m −1 ) [ 46 ]. For all the studied DESs, the surface tensions showed an inversely proportional linear correlation with the temperature [ 39 , 46 , 47 , 48 , 49 ].…”

Section: Properties Of Deep Eutectic Solventsmentioning

confidence: 99%

Deep Eutectic Solvents: Properties and Applications in CO2 Separation

2023

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Nowadays, many researchers are focused on finding a solution to the problem of global warming. Carbon dioxide is considered to be responsible for the “greenhouse” effect. The largest global emission of industrial CO2 comes from fossil fuel combustion, which makes power plants the perfect point source targets for immediate CO2 emission reductions. A state-of-the-art method for capturing carbon dioxide is chemical absorption using an aqueous solution of alkanolamines, most frequently a 30% wt. solution of monoethanolamine (MEA). Unfortunately, the usage of alkanolamines has a number of drawbacks, such as the corrosive nature of the reaction environment, the loss of the solvent due to its volatility, and a high energy demand at the regeneration step. These problems have driven the search for alternatives to that method, and deep eutectic solvents (DESs) might be a very good substitute. Many types of DESs have thus far been investigated for efficient CO2 capture, and various hydrogen bond donors and acceptors have been used. Deep eutectic solvents that are capable of absorbing carbon dioxide physically and chemically have been reported. Strategies for further CO2 absorption improvement, such as the addition of water, other co-solvents, or metal salts, have been proposed. Within this review, the physical properties of DESs are presented, and their effects on CO2 absorption capacity are discussed in conjunction with the types of HBAs and HBDs and their molar ratios. The practical issues of using DESs for CO2 separation are also described.

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Aliphatic amino acids as possible hydrogen bond donors for preparing eutectic solvents

Cited by 16 publications

References 47 publications

Sustainable and Green Engineering Insights on Deep Eutectic Solvents toward the Extraction of Nutraceuticals

Sustainable and Green Engineering Insights on Deep Eutectic Solvents toward the Extraction of Nutraceuticals

A theoretical and electrochemical impedance spectroscopy study of the adsorption and sensing of selected metal ions by 4-morpholino-7-nitrobenzofuran

Deep Eutectic Solvents: Properties and Applications in CO2 Separation

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