Thermal Conductivities of Choline Chloride-Based Deep Eutectic Solvents and Their Mixtures with Water: Measurement and Estimation

Ibrahim, Taleb H.; Sabri, Muhammad Ashraf; Jabbar, Nabil Abdel; Nancarrow, Paul; Mjalli, Farouq S.; AlNashef, Inas M.

doi:10.3390/molecules25173816

Cited by 25 publications

(14 citation statements)

References 48 publications

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“…Several studies have been carried out regarding the thermophysical properties of several ILs and DES [ 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ], and both have been proved to be good dispersant media for CNTs dispersion [ 21 , 34 , 35 , 36 , 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

et al. 2021

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A suitable dispersion of carbon materials (e.g., carbon nanotubes (CNTs)) in an appropriate dispersant media, is a prerequisite for many technological applications (e.g., additive purposes, functionalization, mechanical reinforced materials for electrolytes and electrodes for energy storage applications, etc.). Deep eutectic solvents (DES) have been considered as a promising “green” alternative, providing a versatile replacement to volatile organic solvents due to their unique physical-chemical properties, being recognized as low-volatility fluids with great dispersant ability. The present work aims to contribute to appraise the effect of the presence of MWCNTs and Ag-functionalized MWCNTs on the physicochemical properties (viscosity, density, conductivity, surface tension and refractive index) of glyceline (choline chloride and glycerol, 1:2), a Type III DES. To benefit from possible synergetic effects, AgMWCNTs were prepared through pulse reverse electrodeposition of Ag nanoparticles into MWCNTs. Pristine MWCNTs were used as reference material and water as reference dispersant media for comparison purposes. The effect of temperature (20 to 60 °C) and concentration on the physicochemical properties of the carbon dispersions (0.2–1.0 mg cm−3) were assessed. In all assessed physicochemical properties, AgMWCNTs outperformed pristine MWCNTs dispersions. A paradoxical effect was found in the viscosity trend in glyceline media, in which a marked decrease in the viscosity was found for the MWCNTs and AgMWCNTs materials at lower temperatures. All physicochemical parameters were statistically analyzed using a two-way analysis of variance (ANOVA), at a 5% level of significance.

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Section: Introductionmentioning

confidence: 99%

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

et al. 2021

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“…Gautam and Seth observed that the thermal conductivities of ammonium-based DESs decreased slightly as the temperature increased. Ibrahim et al used an improved transient plane source method to measure the thermal conductivities of seven choline chloride-based DESs in the temperature range from 295 to 363 K at atmospheric pressure. The thermal conductivities decreased slightly with the increase of temperature.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, they obtained temperature dependencies that follows the observed tendencies for the liquids of the present study. The influence parameters of temperature were obtained by linear fitting. , …”

Section: Resultsmentioning

confidence: 99%

“…So far as we know, no one has studied the effect of pressure on the thermal conductivity of any DESs. A few articles on the thermal conductivity of DESs only reported their thermal conductivity value at atmospheric pressure. − …”

Section: Resultsmentioning

confidence: 99%

“…As we all know, DES has a eutectic point at a certain mole ratio of components, and the melting point reaches the lowest at this time . At present, the published measurement of thermal conductivity of DES is limited to the eutectic point composition. − Given that the purpose is to find a thermally conductive solvent that is liquid at the operating temperature of the system or process, there seems no reason to be limited to the eutectic point composition. Any composition that is in the liquid region at this temperature can be used and defined as DESs.…”

Section: Resultsmentioning

confidence: 99%

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Measurements of the Thermal Conductivity of l-Menthol–Decanoic Acid Deep Eutectic Solvents in the Temperature Range from 283.15 to 363.15 K at Pressures up to 15.1 MPa

Hou

et al. 2021

J. Chem. Eng. Data

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In this work, the thermal conductivities of l-menthol–decanoic acid (Men–DecA) deep eutectic solvents were measured with different mole compositions using a transient hot-wire method. The measured temperature range was 283.15–363.15 K, and the pressure was up to 15.1 MPa. The relative expanded uncertainty of the obtained data was estimated to be ±2% with a confidence level of 0.95 (k = 2). The linear thermal conductivity model was used to correlate the experimental data as a function of the mole fraction of decanoic acid, temperature, and pressure. The average absolute relative deviation and the maximum absolute relative deviation between the experimental values and the calculated results from the model were 0.27 and 1.26%, respectively.

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A review on the thermal conductivity of deep eutectic solvents

Aparício

2023

J Therm Anal Calorim

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Deep eutectic solvents may develop a pivotal role in future technologies considering sustainability and safety as pivotal aspects for chemistry developments. The possible application of these fluids for heat transfer operations is of great relevance for which the knowledge of thermal properties such as thermal conductivity is required as well as inferring structure–property relationships which allow reverse design of the fluids according to the technological requirements. Considering the technological relevance of this property, the available literature on the thermal conductivity for deep eutectic solvents is critically discussed showing strengths and weaknesses. The analysis of the state-of-the-art shows the future needs in this research field considering the application of these solvents for thermal-related technologies. The review indicates the scarcity of reliable experimental data and the need of predictive methods, which could be used for process design and solvent screening purposes. Likewise, considering the relevance of developing predictive methods for in silico design of these fluids according to industrial needs, the available predictive theoretical approaches are analysed showing their reliability as well as future needs. Finally, considering the need of developing suitable and reliable structure–property relationship, the molecular level basis of thermal conductivity in deep eutectic solvents is discussed, showing the role of hydrogen bonding and the effects rising from the involved hydrogen bond donors and acceptors as well as the eutectic compositions. This work reports the first literature review and analysis on thermal conductivity for deep eutectic solvents considering an experimental and theoretical approach as well as providing support for the molecular basis of this technologically relevant property, thus contributing to the development of environmentally friendly materials for thermal-related technologies. Graphical abstract

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Thermal Conductivities of Choline Chloride-Based Deep Eutectic Solvents and Their Mixtures with Water: Measurement and Estimation

Cited by 25 publications

References 48 publications

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

Characterization of Carbon Nanomaterials Dispersions: Can Metal Decoration of MWCNTs Improve Their Physicochemical Properties?

Measurements of the Thermal Conductivity of l-Menthol–Decanoic Acid Deep Eutectic Solvents in the Temperature Range from 283.15 to 363.15 K at Pressures up to 15.1 MPa

A review on the thermal conductivity of deep eutectic solvents

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