Deep eutectic solvents composed of tetrabutylammonium bromide and PEG: Density, speed of sound and viscosity as a function of temperature

Ijardar, Sushma P.

doi:10.1016/j.jct.2019.105897

Cited by 49 publications

(29 citation statements)

References 53 publications

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“…11 The rational design and selection of DESs for a particular process require general knowledge and consideration of the properties of DESs, thus increasing attention is being paid to experimentally and analytically understand their properties, such as melting temperatures, density, surface tension, speed of sound, and conductivity. [12][13][14][15] Melting temperature, as one of the most important physical properties, is useful in chemical identification, 16 purification, 17 and drug research. 18 In addition, the properties, experimentally difficult to determine, for example, enthalpy of fusion and activity coefficient, 19 can also be derived from melting temperature data.…”

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confidence: 99%

Group and group‐interaction contribution method for estimating the melting temperatures of deep eutectic solvents

Hou

et al. 2021

AIChE Journal

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Deep eutectic solvents (DESs) are mixtures of two or more components that have lower melting temperatures compared to their constituting components. DESs possess many advantages, for example, low volatility, low flammability, and low toxicity, which make them promising alternatives to traditional organic solvents. The melting temperature, one of the important physical properties, is of essential importance for industrial applications. In this work, a group and group-interaction contribution method was proposed to estimate the melting temperatures of DESs using an extensive database (1528 DESs, 1541 data points). The average absolute relative deviation (%AARD) between the estimated and experimental values of the melting temperature was 5.67% for binary DESs. Subsequently, this method was also extended to estimate the melting temperature of ternary DESs, with the AARD of 6.13%. The results indicate the high accuracy and broad applicability of the method and pave the way for the rational design of task-specific DESs.

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confidence: 99%

Group and group‐interaction contribution method for estimating the melting temperatures of deep eutectic solvents

Hou

et al. 2021

AIChE Journal

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“…is obtained.

\ln u^{2} = \frac{normalΔ H_{u}}{RT} - \frac{normalΔ S_{u}}{R} + A

Equation predicts that the plot of ln( u ) against 1/ T would be linear with the slope and intercept equal ‐Δ H u /2R and (‐Δ S u /R + A)/2, respectively. Using the speed of sound in deep eutectic solvents at temperature 298.15–343.15 K (Ijardar, 2020), a set of linear lines are obtained as shown in Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Correlating the Speed of Sound with the Gibbs Energy and Estimating the Speed of Sound in Fatty Acid Methyl Ester and Biodiesel

Cheewaphan

Chuensumran

Phankosol

et al. 2021

J Americ Oil Chem Soc

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The relationship between the speed of sound (u) in biodiesel and the change in Gibbs energy (ΔG) has not been described in the literature. With the Gibbs energy additivity method, the relationship between u and ΔG can be expressed as ln(u2) = ΔG/RT + A, where R is the universal gas constant, T is the absolute temperature, and A is a constant. The molecule of fatty acid methyl ester (FAME) was arbitrarily sub‐divided into groups of atoms and a ΔG was assigned to each group of atoms. A new model correlating the speed of sound to the structure of fatty acid was derived. The proposed model was good for estimation of the speed of sound in both FAME and biodiesel at various temperatures with good accuracy. The absolute average deviations for the speed of sound in FAME (65 data points) and in biodiesel (175 data points) were 0.23% and 0.36%, respectively. Only the number of double bonds and carbon atoms of the fatty acid are required for the calculation.

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“…The design of DESs for specific applications needs knowledge of the physicochemical properties of DESs. Importantly, the accurate knowledge of physicochemical properties such as density, speed of sound, refractive index, and viscosity of DESs are crucial for their industrial exposure as a solvent in various operation unit processes [32,33]. Hence, the number of publications for physicochemical properties are continuously increasing.…”

Section: Physicochemical Properties Of Dessmentioning

confidence: 99%

“…(1) Nature of HBD: The densities of DESs obviously depend upon the nature of the HBD [25,29,33,37,38,42,43,45,[47][48][49][50][51][52]55,64]. For example, Florindo et al have studied DESs composed of ChCl:carboxylic acids (oxalic acid, glycolic acid, malonic acid, glutaric acid, and levulinic acid) of different alkyl chain length.…”

Section: Densitymentioning

confidence: 99%

Revisiting the Physicochemical Properties and Applications of Deep Eutectic Solvents

2022

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Recently, deep eutectic solvent (DES) or ionic liquid (IL) analogues have been considered as the newest green solvent, demonstrating the potential to replace harsh volatile organic solvents. DESs are mainly a combination of two compounds: hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD), which have the ability to interact through extensive hydrogen bonds. A thorough understanding of their physicochemical properties is essential, given their successful applications on an industrial scale. The appropriate blend of HBA to HBD can easily fine-tune DES properties for desired applications. In this context, we have reviewed the basic information related to DESs, the two most studied physicochemical properties (density and viscosity), and their performance as a solvent in (i) drug delivery and (ii) extraction of biomolecules. A broader approach of various factors affecting their performance has been considered, giving a detailed picture of the current status of DESs in research and development.

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Deep eutectic solvents composed of tetrabutylammonium bromide and PEG: Density, speed of sound and viscosity as a function of temperature

Cited by 49 publications

References 53 publications

Group and group‐interaction contribution method for estimating the melting temperatures of deep eutectic solvents

Group and group‐interaction contribution method for estimating the melting temperatures of deep eutectic solvents

Correlating the Speed of Sound with the Gibbs Energy and Estimating the Speed of Sound in Fatty Acid Methyl Ester and Biodiesel

Revisiting the Physicochemical Properties and Applications of Deep Eutectic Solvents

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