Performance of Ionic Liquid-Water Mixtures in an Acetone Cooling Application

El-Sinawi, Ameen; Silaipillayarputhur, Karthik; Al‐Mughanam, Tawfiq; Hardacre, Christopher

doi:10.3390/su13052949

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…16,[18][19][20][21][22][23][24][25] Phosphonium carboxylates can self-aggregate 26 and so favourably interact with organic and aqueous phases 27 as the cations are non-polar and mainly hydrophobic and the anions easily mix with water. The size of alkyl chains in the phosphonium cation can be tuned to design carboxylate ILs with appropriate dynamic properties for their use as electrolytes, 28 heat transfer fluids, 29,30 or lubricants. [31][32][33][34] They have also been reported as catalysts [35][36][37] and curing agents for polymeric materials.…”

Section: Introductionmentioning

confidence: 99%

Alkylphosphonium carboxylate ionic liquids with tuned microscopic structures and properties

Scaglione

Ávila

Baķis

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

Alkylphosphonium carboxylate ionic liquids with tuned microscopic structures and properties

Scaglione

Ávila

Baķis

et al. 2023

Phys. Chem. Chem. Phys.

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“…The unique properties of ionic liquids (ILs), including better chemical and thermal stability, the wider liquid range, and nonflammable and lower vapor pressure, suggest that ILs are possible substitutes for environmentally harmful HTFs used in industry, both in terms of performance and safety. − To date, ILs as HTFs, researchers have mainly focused on quaternary phosphorus-based, imidazolium-based, pyrrolidinium-based, and trisubstituted imidazolium-based ILs with [BF 4 ] − , [PF 6 ] − , [DEP] − , [TFA] − , [TFO] − , [SCN] − , [C(CN) 3 ] − , [CH 3 SO 3 ] − , [N(CN) 2 ] − , or [TFSI] − anion, etc. ,,− …”

Section: Introductionmentioning

confidence: 99%

“…Tenney et al measured the thermal conductivity, density, viscosity, glass transition temperature, and heat capacity for ILs [C 2 MIm][TFA], [C 2 MIm][TFO], [C 2 MIm][DEP], [C 2 MIm][SCN], [C 6 MIm][TFSI], etc . El-Sinawi et al studied the performance of IL {[P 6,6,6,14 ][C n H 2 n +1 COO] ( n = 3, 5, 7, 9)}–water mixtures in an acetone cooling application . Kazem et al carried out the thermodynamic and economic investigation of IL [C 4 pyr][BF 4 ] as a new proposed geothermal fluid in different organic Rankine cycles for energy production .…”

Section: Introductionmentioning

confidence: 99%

Feasibility of 1-Ethyl-4-butyl-1,2,4-triazolium Acetyl Amino Acid Ionic Liquids as Sustainable Heat-Transfer Fluids

Liang

Ren

et al. 2022

ACS Sustainable Chem. Eng.

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As an improvement on imidazolium amino acid ionic liquids, three ionic liquids, 1-ethyl-4-butyl-1,2,4-triazolium acetylglycine [Taz(2,4)][Acgly], 1-ethyl-4-butyl-1,2,4-triazolium acetylalanine [Taz(2,4)][Acala], and 1-ethyl-4-butyl-1,2,4-triazolium acetylcysteine [Taz(2,4)][Accys], were first synthesized for future application as heat-transfer media. The density, surface tension, isobaric heat capacity, and thermal conductivity were measured in different experimental temperature ranges. Based on the above experimental data, the isobaric thermal expansibility and isentropic and isothermal compressibility, as well as the isochoric heat capacity and heat-storage density, were also calculated. Compared with several popular commercial heat-transfer fluids, it was found that the ionic liquids studied in this work have better performance in terms of heat-storage density of ∼2.38 MJ·cm–3·K–1 and thermal conductivity of ∼0.197 W·m–1·K–1. In addition, the viscosity was also determined, and the results showed an unexpected reduction by the introduction of a small amount of water for ionic liquids and almost no influence on other thermophysical properties. Finally, we selected a specific heat-transfer process and calculated the heat-transfer coefficient and the heat-transfer area based on the thermophysical properties. Meanwhile, the lower liquid temperature limit (∼229 K) and the nontoxic, environmentally friendly anion could provide a wider and safer environment for the application of ionic liquids. Given this, the ionic liquids studied in this work, especially the [Taz(2,4)][Acgly], could be considered as promising heat-transfer fluid candidates by appropriate adjustment of the water content.

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Simulating the ionic liquid mixing with organic-solvent clarifies the mixture’s SFG spectral behavior and the specific surface region originating SFG

Sakhtemanian,

Duwadi,

Baldelli

et al. 2024

Sci Rep

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Molecular dynamics (MD) simulation of the green ionic liquid [C₄mim][PF₆] mixed with polar benzonitrile (BNZ) solvent provides detailed insights into their structural and dynamic properties, essential for electrochemistry and materials science applications. The simulations we carried out at varying mole fractions ( X BZN ) reveal the mixtures’ physical, structural, and dynamic properties, with radial, spatial, and combined distribution functions, highlighting the effective interaction through H-bonding involved. The simulation indicates that BZN stacks on the cation butyl tail, providing a significant explanation for the unique experimental observations (following). Adding BZN causes the mixture’s liquid dynamics to increase linearly at low X BZN and exponentially at high X BZN , with a notable singular transition at 0.5 X BZN . Comprehensive efforts were made to verify and support experimental sum frequency generation (SFG) spectroscopy by simulating the surface structure of the mixtures. Consequently, the simulated BZN stacking structure explains (1) the absence of the C≡N vibrational mode in the SFG spectrum for X BZN < 0.8, and (2) the gradual diminishing of the CH 3 SFG signal, which disappears as X BZN approaches 0.5. Finally, this research removes a persistent ambiguity, proving that only the molecular moieties on the surface generate the SFG vibrational signal, while those in the subsurface do not. Supplementary Information The online version contains supplementary material available at 10.1038/s41598-024-74561-8.

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Performance of Ionic Liquid-Water Mixtures in an Acetone Cooling Application

Cited by 3 publications

References 11 publications

Alkylphosphonium carboxylate ionic liquids with tuned microscopic structures and properties

Alkylphosphonium carboxylate ionic liquids with tuned microscopic structures and properties

Feasibility of 1-Ethyl-4-butyl-1,2,4-triazolium Acetyl Amino Acid Ionic Liquids as Sustainable Heat-Transfer Fluids

Simulating the ionic liquid mixing with organic-solvent clarifies the mixture’s SFG spectral behavior and the specific surface region originating SFG

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