scholarly journals Insights on the water effect on Deep Eutectic Solvents properties and structuring: the archetypical case of choline chloride + ethylene glycol

2021 ◽  
pp. 117717
Author(s):  
Sara Rozas ◽  
Cristina Benito ◽  
Rafael Alcalde ◽  
Mert Atilhan ◽  
Santiago Aparicio
Keyword(s):  
Ethylene Glycol ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Water Effect

Formation of Double-Cone-Shaped ZnO Mesocrystals by Addition of Ethylene Glycol to ZnO Dissolved Choline Chloride–Urea Deep Eutectic Solvents and Observation of Their Manners of Growth

CrystEngComm ◽  
2021 ◽  
Author(s):  
Hajime Wagata ◽  
Ginji Harada ◽  
Eriko Nakashima ◽  
Motoki Asaga ◽  
Tomoaki Watanabe ◽  
...  
Keyword(s):  
Ethylene Glycol ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Double Cone ◽  
Crystal Shapes ◽  
Physical And Chemical

ZnO mesocrystals have been explored for various physical and chemical applications. In spite of effort by a number of researches, it is still difficult to grow specific crystal shapes in...

scholarly journals Cross-dehydrogenative coupling reaction using copper oxide impregnated on magnetite in deep eutectic solvents

2016 ◽  
Vol 18 (3) ◽  
pp. 826-833 ◽  
Author(s):  
Xavier Marset ◽  
Juana M. Pérez ◽  
Diego J. Ramón
Keyword(s):  
Ethylene Glycol ◽  
Copper Oxide ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Coupling Reaction ◽  
Deep Eutectic Solvents ◽  
Dehydrogenative Coupling

The synthesis of different tetrahydroisoquinolines using choline chloride : ethylene glycol as a deep eutectic solvent (DES) and copper(ii) oxide impregnated on magnetite as a catalyst has been accomplished successfully.

Unassisted visible solar water splitting with efficient photoelectrodes sensitized by quantum dots synthesized via an environmentally friendly eutectic solvent-mediated approach

2018 ◽  
Vol 6 (45) ◽  
pp. 22566-22579 ◽  
Author(s):  
Uma V. Ghorpade ◽  
Mahesh P. Suryawanshi ◽  
Seung Wook Shin ◽  
Jihun Kim ◽  
Soon Hyung Kang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Ethylene Glycol ◽  
Water Splitting ◽  
Choline Chloride ◽  
Environmentally Friendly ◽  
Deep Eutectic Solvents ◽  
Colloidal Quantum Dots ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Synthetic Media

Deep eutectic solvents (DESs) based on choline chloride/ethylene glycol have been explored as synthetic media for Cu–Sb–S based colloidal quantum dots for unassisted solar water splitting.

scholarly journals Adsorption phenomena at the interface between mercury and solutions containing choline chloride, ethylene glycol and water

2021 ◽  
pp. 50-58
Author(s):  
F.I. Danilov ◽  
◽  
Y.D. Rublova ◽  
V.S. Protsenko ◽  
◽  
...  
Keyword(s):  
Free Energy ◽  
Ethylene Glycol ◽  
Choline Chloride ◽  
Specific Interaction ◽  
Mercury Electrode ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Charged Surface ◽  
Free Energies ◽  
Adsorption Phenomena

Adsorption of the components of deep eutectic solvent ethaline (ethylene glycol and choline chloride) on mercury electrode is investigated by electrocapillary measurements. It is determined that choline cations are mainly adsorbed on the negatively charged surface of mercury, while chloride anions are mainly adsorbed on the positively charged surface. The corresponding values of free energies of adsorption and interactions of adsorbate and solvent with metal are calculated and analyzed. An anomalous increase in both the apparent value of the adsorption at limiting coverage and the free energy of the interaction of the choline cation with mercury is observed in the transition from aqueous to ethylene glycol solutions, which is explained by the formation of complexes in a surface layer that exist in deep eutectic solvents and are capable of adsorbing on the electrode surface. The free energy of interaction with the mercury surface is higher than the energy of squeezing out from the volume of the solution onto its surface, which indicates the specific interaction of the adsorbate with mercury. A marked decrease in interfacial tension on both branches of the electrocapillary curve is observed when water is added to ethaline.

Exploration of Using Deep Eutectic Solvents to Separate Methyl Palmitate from Simulated Biodiesel Mixtures

2015 ◽  
Vol 1101 ◽  
pp. 249-251 ◽  
Author(s):  
Bao Kun Tang ◽  
Yu Jin Lee ◽  
Kyung Ho Row
Keyword(s):  
Ethylene Glycol ◽  
High Purity ◽  
Methyl Palmitate ◽  
Low Cost ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Purification Process ◽  
Ratio Increase ◽  
Biodiesel Purification

Biodiesel purification from the crude biodiesel product has attracted much attention in recent years, and one low cost and simple purification process is urgent to explore. The separation of methyl palmitate from the crude biodiesel products is a key point. In this work, a series of choline chloride based deep eutectic solvents (DESs) is explored as a solvent for separation of methyl palmitate from the simulated biodiesel product. The work showed that the choline chloride-ethylene glycol DES had a excellent effect on the separation of methyl palmitate, and high purity of methyl palmitate were obtained with the choline chloride to ethlene glycol ratio decrease or with the choline chloride-ethylene glycol DES to biodiesel ratio increase.

Application of deep eutectic solvents (DES) to the denitrification of transportation fuels : insights from experimental liquid-liquid phase equilibrium data

2018 ◽  
Author(s):  
◽  
Sanele Enough Msibi
Keyword(s):  
Ethylene Glycol ◽  
Fossil Fuels ◽  
Choline Chloride ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Distribution Coefficients ◽  
Liquid Equilibrium ◽  
Transportation Fuels ◽  
Basic Nitrogen ◽  
Equilibrium Data

Air pollution by combustion of fossil fuels is of global concern in this decade and beyond. The presence of nitrogen and sulphur impurities pose deleterious effects to refinery equipment, the environment, and human health. Therefore, many governments continue to impose stringent environmental regulations and standards on transportation fuels emissions. The current study evaluates alternate processing solutions to complement or replace the currently used processes to refine these impurities to meet the increasingly stringent fuel standards. This study evaluates the use of a class extractive solvents called Deep Eutectic Solvents (DES) for the removal of basic nitrogen impurities from refining streams by liquid-liquid extraction. This process is evinced as energy saving and environmentally friendly. The removal of pyridine and quinoline by the direct analytical method with choline chloride based deep eutectic solvent (DES) was studied. Liquid-liquid equilibrium measurements data were undertaken at 298.15 K and atmospheric pressure for n-heptane + pyridine/quinoline + [choline chloride + glycerol] DES and n-heptane + pyridine/quinoline + [choline chloride + ethylene glycol] DES systems. The obtained data were then regressed using the Non Random Two Liquid and Universal Quasi-Chemical models activity coefficient, and their mathematical reliability was validated using the Othmer Tobias and Hand correlations. A mixture of choline chloride and glycerol (DES1) showed greater extraction potential for basic nitrogen containing compounds compared to choline chloride and ethylene glycol with a distribution coefficient and selectivity of 22.7 and 2056 for pyridine, and 3.3 and 164.9 for quinoline respectively. The studied solvents showed comparability to organic and ionic liquids solvents in selectivity and distribution coefficients. The obtained liquid-liquid equilibrium data can be used in the design of a solvent extraction equipment, as phase diagrams plays an important role in separation process design.

Deep eutectic solvents (DESs) as low-cost and green electrolytes for electrochromic devices

2017 ◽  
Vol 19 (7) ◽  
pp. 1653-1658 ◽  
Author(s):  
Hugo Cruz ◽  
Noémi Jordão ◽  
Luís C. Branco
Keyword(s):  
Ethylene Glycol ◽  
Lithium Chloride ◽  
Low Cost ◽  
Choline Chloride ◽  
Deep Eutectic Solvents ◽  
Electrochromic Devices

The application of deep eutectic solvents based on choline chloride or lithium chloride with ethylene glycol and glycerol as low-cost, recyclable and green electrolytes for electrochromic devices is reported.

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