Diverse applications of ionic liquids: A comprehensive review

Kaur, Gagandeep; Kumar, Harsh; Singla, Meenu

doi:10.1016/j.molliq.2022.118556

Cited by 225 publications

(90 citation statements)

References 241 publications

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“…These are amplified when considering real-life applications, because the unavoidable presence of impurities greatly expands the range of possible reactions, whose products could also affect the environment or the general safety of the process. However, there seem to be still a range of compounds and conditions that could support a variety of applications besides those in separation, extraction and purification, or catalysis that are already relevant in industrial and technological settings [ 38 , 39 , 40 ].…”

Section: Applicationsmentioning

confidence: 99%

“…Since this paper is not meant to be a general review on ILs, whose properties however represent the necessary background for our discussion, we point the reader to a series of reviews (see the list in reference [ 37 ]) published in the Chemical Review (ACS) special issue, and recent reviews on industrial and environmental applications of ILs, references [ 38 , 39 , 40 ]. An additional important aspect that is relevant (in view of applications) but is only superficially mentioned in the review, concerns toxicity and adverse environmental impacts of ILs.…”

Section: Introductionmentioning

confidence: 99%

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Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

et al. 2022

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The thermodynamics, structures, and applications of thermoresponsive systems, consisting primarily of water solutions of organic salts, are reviewed. The focus is on organic salts of low melting temperatures, belonging to the ionic liquid (IL) family. The thermo-responsiveness is represented by a temperature driven transition between a homogeneous liquid state and a biphasic state, comprising an IL-rich phase and a solvent-rich phase, divided by a relatively sharp interface. Demixing occurs either with decreasing temperatures, developing from an upper critical solution temperature (UCST), or, less often, with increasing temperatures, arising from a lower critical solution temperature (LCST). In the former case, the enthalpy and entropy of mixing are both positive, and enthalpy prevails at low T. In the latter case, the enthalpy and entropy of mixing are both negative, and entropy drives the demixing with increasing T. Experiments and computer simulations highlight the contiguity of these phase separations with the nanoscale inhomogeneity (nanostructuring), displayed by several ILs and IL solutions. Current applications in extraction, separation, and catalysis are briefly reviewed. Moreover, future applications in forward osmosis desalination, low-enthalpy thermal storage, and water harvesting from the atmosphere are discussed in more detail.

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Section: Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

et al. 2022

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“…ILs are known as designer solvents due to the different combinations of cations and anions; thus, ILs can be specifically designed for different purposes and applications [3][4][5]. Various applications of ILs have been reported in the literature [19]. The significant usage of ILs has been observed in the fields of electrochemistry, extraction and separation processes, biodiesel production, spectrometry, carbon capture processes, treatment of nuclear wastes as well as fuel purification [19].…”

Section: Introductionmentioning

confidence: 99%

“…Various applications of ILs have been reported in the literature [19]. The significant usage of ILs has been observed in the fields of electrochemistry, extraction and separation processes, biodiesel production, spectrometry, carbon capture processes, treatment of nuclear wastes as well as fuel purification [19]. Despite all this, their use as solvents as well as catalysts have been described in various types of organic reactions, nanoparticle synthesis, and enzymatic reactions [19].…”

Section: Introductionmentioning

confidence: 99%

An Overview on the Recent Advances in Alternative Solvents as Stabilizers of Proteins and Enzymes

et al. 2022

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Currently, the use of alternative solvents is increasing, namely ionic liquids (ILs) and deep eutectic solvents (DESs) in diverse fields of knowledge, such as biochemistry, chemistry, chemical engineering, biotechnology and biomedicine. Particularly, when compared to traditional solvents, these alternative solvents have great importance for biomolecules due to the enhanced solubility, structure stability and the biological activity of biomolecules, such as protein and enzymes. Thus, in this review article, the recent developments and efforts on the technological developments carried out with ILs and DESs for the stabilization and activation of proteins and enzymes are provided. The most studied IL- and DES-based formulations for proteins and enzymes are discussed and the molecular mechanisms and interactions related to the increased stability promoted by these alternative solvents are disclosed, while emphasizing their main advantages.

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“…To our best knowledge, ionic liquids (ILs) have been used in solvent extraction for separating metal ions [ 4 , 23 , 24 ] due to their unique properties, i.e., low vapor pressure, high dissolving capability, chemical/thermal stability [ 25 ], and designable structure [ 26 , 27 ]. For example, the efficient and sustainable separation of Ho, Er, and Lu from Y was achieved using the functionalized ionic liquid of [N 1888 ][NDA] [ 28 ]; the new ionic liquid of [N 14111 ][DBP] exhibited high efficiency in uranium separation [ 29 ]; and the extraction efficiencies of Cd(II), Cu(II), and Zn(II) were about 85, 67, and 69% using the hydrophobic trioctylammonium-based ionic liquid of [HTOA][adipate] [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Single-Stage Extraction and Separation of Co2+ from Ni2+ Using Ionic Liquid of [C4H9NH3][Cyanex 272]

et al. 2022

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The purpose of this study was to optimize the extraction conditions for separating Co2+ from Ni2+ using N-butylamine phosphinate ionic liquid of [C4H9NH3][Cyanex 272]. A Box–Behnken design of response surface methodology was used to analyze the effects of the initial pH, extraction time, and extraction temperature on the separation factor of Co2+ from sulfuric acid solution containing Ni2+. The concentrations of Co2+ and Ni2+ in an aqueous solution were determined using inductively coupled plasma-optical emission spectrometry. The optimized extraction conditions were as follows: an initial pH of 3.7, an extraction time of 55.8 min, and an extraction temperature of 330.4 K. The separation factor of Co2+ from Ni2+ under optimized extraction conditions was 66.1, which was very close to the predicted value of 67.2, and the error was 1.7%. The equation for single-stage extraction with high reliability can be used for optimizing the multi-stage extraction process of Co2+ from Ni2+. The stoichiometry of chemical reaction for ion-exchange extraction was also investigated using the slope method.

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Diverse applications of ionic liquids: A comprehensive review

Cited by 225 publications

References 241 publications

Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

Thermoresponsive Ionic Liquid/Water Mixtures: From Nanostructuring to Phase Separation

An Overview on the Recent Advances in Alternative Solvents as Stabilizers of Proteins and Enzymes

Single-Stage Extraction and Separation of Co2+ from Ni2+ Using Ionic Liquid of [C4H9NH3][Cyanex 272]

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