Densities and dynamic viscosities of (choline chloride+glycerol) deep eutectic solvent and its aqueous mixtures in the temperature range (283.15–363.15)K

Yadav, Anita; Trivedi, Shruti; Rai, Ruchi; Pandey, Siddharth

doi:10.1016/j.fluid.2014.01.028

Cited by 243 publications

(220 citation statements)

References 36 publications

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“…. Similar density values of ChCl‐Gly 1:2 and ChCl‐Gly 1:3 were found by Yadav et al . and Singh et al …”

Section: Resultssupporting

confidence: 88%

“…The lowest value of viscosity at 25 ∘ C was found for ChCl-Gly with the molar ratio of 1:3, making it the best choice for extraction among the probed DESs. In comparison with the previously reported data for ChCl-Gly 1:2, similar viscosity values were obtained by Abbot et al 33 and Yadav et al 34…”

Section: Dynamic Viscositysupporting

confidence: 92%

“…4. Similar density values of ChCl-Gly 1:2 and ChCl-Gly 1:3 were found by Yadav et al 34 and Singh et al 39 Thermal properties Understanding the thermal properties is essential for heat flow management. Thermal conductivity, temperature diffusivity and heat capacity experimental data at 25 ∘ C are shown in Table 2.…”

Section: Densitysupporting

confidence: 78%

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Purification of motor fuels by means of extraction using deep eutectic solvent based on choline chloride and glycerol

Kučan

Rogošić

2019

J of Chemical Tech & Biotech

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BACKGROUND Deep eutectic solvents (DESs) are being used in different applications as replacements for classical organic solvents; their physico‐chemical properties comply with the criteria of environmental acceptability. RESULTS In this work, choline chloride‐glycerol based DESs of different molar ratios (ChCl‐Gly 1:1.5, 1:2 and 1:3) were prepared and characterized with respect to density, dynamic viscosity, refractive index, electrical conductivity and thermal properties. The DESs were tested for denitrification, desulfurization and dearomatization of the six‐component model gasoline composed of three aliphatic hydrocarbons and pyridine, thiophene and toluene as representatives of nitrogen, sulfur and aromatic compounds of fuel, respectively. It was found that ChCl‐Gly is a better solvent for removal of pyridine from model gasoline in comparison with thiophene and toluene. Optimally, denitrification efficiency of 58% can be achieved in one‐stage extraction, and deep denitrification can be achieved in five‐stage extraction resulting in an efficiency of 99.62%. By performing a four‐stage extraction using the same batch of DES, a gradual decrease in extraction efficiency was observed. By evaporative purification of DES between the stages, the extraction efficiency was found to remain constant. ChCl‐Gly exhibited significant efficiency in denitrification of fluid catalytic cracking gasoline as well. CONCLUSION ChCl‐Gly based DESs are suitable for denitrification of fuel. The ability of application environmentally friendly solvents in the fuel purification process contributes to the development of cleaner technologies. © 2018 Society of Chemical Industry

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“…. Similar density values of ChCl‐Gly 1:2 and ChCl‐Gly 1:3 were found by Yadav et al . and Singh et al …”

Section: Resultssupporting

confidence: 88%

Section: Dynamic Viscositysupporting

confidence: 92%

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Purification of motor fuels by means of extraction using deep eutectic solvent based on choline chloride and glycerol

Kučan

Rogošić

2019

J of Chemical Tech & Biotech

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“…In contrast to what There is a stark difference in (ln η) E for aqueous mixtures of (choline chloride + urea) DES as opposed to that for aqueous mixtures of (choline chloride + glycerol) DES. 39 The (ln η) E are positive for aqueous mixtures of (choline chloride + glycerol) DES at all compositions in the same temperature range. Intensive H-bonding within a mixture between the components forming the mixture usually leads to positive (ln η) E as mixture viscosity comes out to be higher than that calculated using eq 7.…”

Section: ■ Results and Discussionmentioning

confidence: 91%

Densities and Viscosities of (Choline Chloride + Urea) Deep Eutectic Solvent and Its Aqueous Mixtures in the Temperature Range 293.15 K to 363.15 K

2014

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Deep eutectic solvents (DESs) have been regarded as one of the most promising environmentally benign and cost-effective alternatives to conventional ionic liquids and volatile organic solvents. Aqueous mixtures of DESs have the potential to afford modified properties for specific applications. Densities and dynamic viscosities of a common and popular DES composed of choline chloride and urea in 1:2 molar ratio, named reline, and its aqueous mixtures in the temperature range 293.15 K to 363.15 K are reported. A decrease in density with increasing temperature is found to follow a quadratic expression. Excess molar volumes of the aqueous mixtures of reline are found to be negative at all temperatures and compositions. The absolute excess molar volume is found to decrease, in general, as the temperature is increased from 293.15 K to 323.15 K. For temperatures above 323.15 K, the excess molar volume does not change much with further increase in temperature to 363.15 K. The temperature dependence of dynamic viscosity of aqueous mixtures of reline in the temperature range 293.15 K to 363.15 K at all compositions is found to be better described by a Vogel−Fulcher−Tamman (VFT) model as opposed to an Arrhenius expression. Excess logarithmic viscosities for aqueous mixtures of reline are found to be negative at most temperatures and compositions; however, they become positive at 353.15 K and 363.15 K. The excess logarithmic viscosities of aqueous reline mixtures are in stark contrast to that reported for aqueous mixtures of DES glyceline, composed of choline chloride and glycerol in the same mole ratio, where the excess logarithmic viscosities are positive. Facile interstitial accommodation of water within H-bonded reline network as opposed to formation of extensive H-bonding is proposed to be the reason for this experimental observation. The important role of the H-bond donor as a constituent of DES is amply highlighted as it controls the interactions present in a DES and its aqueous mixtures. ■ INTRODUCTIONDuring the last couple of decades several greener alternatives to volatile organic compounds (VOCs) have been proposed by various research groups. Among the greener alternatives, water, supercritical CO 2 , ionic liquids, renewable solvents, liquid polymers, and so forth are becoming the obvious choices for researchers. 1−8 However, in many of these common environmentally benign alternate media, a lot of interest has been generated in ionic liquids due to their unique and tunable physicochemical properties. Among the key properties of ionic liquids, negligible vapor pressure, good thermal stability, high solubility, and nonflammability are the most noteworthy. 9−12 However, several disadvantages are also observed with common ionic liquids during their investigations, such as limited solute solubility, high viscosity, poor biodegradability, unfavorable toxicity, and high cost. 13−16 Recently, deep eutectic solvents (DESs) have emerged as attractive alternatives to ionic liquids showing several advantages over the latte...

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“…DESs which are also called ionic liquid analogues can be prepared using cheap and non‐toxic materials. DESs not only have special properties compared with traditional organic solvents, but also their mixtures with other ordinary organic solvents may show improved and favorable characteristics . In this contribution and in continuing our previous studies on chemical kinetics in solvent mixtures, we report here a kinetic study of the reaction between 1‐fluoro‐2,4‐dinitrobenzene (FDNB) and piperidine performed in various compositions of ethylene glycol‐choline chloride (ethaline), and glycerol‐choline chloride (glyceline) as 2 DESs mixed with dimethyl sulfoxide (DMSO) as a common aprotic molecular solvent at 25°C.…”

Section: Introductionmentioning

confidence: 99%

Dimethyl sulfoxide/deep eutectic solvents mixtures as media in the reaction of 1‐fluoro‐2,4‐dinitrobenzene with piperidine: A solvent effect study

Harifi‐Mood

Sadrzadeh

2017

J of Physical Organic Chem

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Aromatic nucleophilic substitution reaction of 1‐fluoro‐2,4‐dinitrobenzene with piperidine was kinetically investigated in ethylene glycol‐choline chloride and glycerol‐choline chloride as 2 deep eutectic solvents (DESs) mixed with dimethyl sulfoxide, in whole mole fractions, at room temperature. The investigation of the reaction in different concentrations of the piperidine shows that the reaction follows the base‐catalyzed mechanism. The measured rate coefficients of the reaction demonstrated a sharp decreasing in all mixtures with the increasing mole fraction of DESs. Linear free energy relationship investigations confirm that hydrogen bond donor ability in addition to polarity‐polarizability of the media has a major effect on the reaction rate. The decrease in the rate coefficient is attributed to not only hydrogen‐bonding donor interactions of the media with piperidine as both reactant and catalyst but also the preferential solvation of reactants by DES compared with the intermediate of the reaction.

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Densities and dynamic viscosities of (choline chloride+glycerol) deep eutectic solvent and its aqueous mixtures in the temperature range (283.15–363.15)K

Cited by 243 publications

References 36 publications

Purification of motor fuels by means of extraction using deep eutectic solvent based on choline chloride and glycerol

Purification of motor fuels by means of extraction using deep eutectic solvent based on choline chloride and glycerol

Densities and Viscosities of (Choline Chloride + Urea) Deep Eutectic Solvent and Its Aqueous Mixtures in the Temperature Range 293.15 K to 363.15 K

Dimethyl sulfoxide/deep eutectic solvents mixtures as media in the reaction of 1‐fluoro‐2,4‐dinitrobenzene with piperidine: A solvent effect study

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