The separation of azeotropic mixtures is an "old" engineering problem that cannot be solved by simple distillation processes. One the current ways to overcome this use other types processes, such as extractive/azeotropic or liquid–liquid extraction, where entrainers extraction solvents are applied. Liquid–liquid processes have been emerging appealing alternatives because they do not require high amounts energy, volatile organic compounds pressures. In work, deep eutectic (DES) tested in...

Density, speed of sound, refractive index, dynamic viscosity, and surface tension measurements 1-butyl-3-methylimidazolium methyl sulfate have been made as a function temperature. The synthesis the ionic liquid is given. low viscosity suggests its use solvent in extraction process for separation azeotropic mixtures. thermal expansion coefficient was calculated from density, results are discussed. An analysis influence alkyl chain length cation on density performed by comparison with recently...

Ionic liquids have become a green media for engineering applications due to exceptional physicochemical properties, such as their practically nonvolatile nature, null flammability, low melting point, high ionic conductivity, and thermal electrochemical stability. This work aimed select the best fluorinated following applications: recovery/recycling of perfluorocarbon contaminants greenhouse perfluorocarbons gases perfluoroalkyl acids industrial effluents that are persistent, bioaccumulative,...

Ionic liquids with cholinium-based active pharmaceutical ingredients (API-ILs) were prepared<italic>via</italic>a simple and sustainable two-step anion exchange reaction. The resulting salts have improved upon the chemical, physical biopharmaceutical properties of parent APIs.

The study of solid–fluid transitions in fluorinated ionic liquids using differential scanning calorimetry, rheology, and molecular modeling techniques is an essential step toward the understanding their dynamics thermodynamics development potential applications. Two were studied: 1-hexyl-3-methylimidazolium perfluorobutanesulfonate, HMIm(PFBu)SO3, tetrabutylammonium NB4(PFBu)SO3. experimental calorimetric rheological data analyzed taking into account possible mesoscale structure two liquids....

A successful process to extract lipolytic enzymes based on an aqueous biphasic system (ABS), which uses both ionic liquids (ILs) and a high charge-density inorganic salt (K2CO3), is proposed in this work. The activity of model Thermomyces lanuginosuslipase (TlL) some the most common hydrophilic ILs, 1-alkyl-3-methylimidazolium cation, combined with chloride, alkylsulfate, alkylsulfonate acetate, was investigated. Several operating conditions influencing lipase ABS formation were Parameters...

This paper reports on the synthesis of ionic liquid 1,3-dimethylimidazolium methyl sulfate [MMIM][MeSO4]. Experimental densities, speed sounds, and refractive indices were determined from (283.15 to 343.15) K. Dynamic viscosities measured (293.15 Surface tensions (288.15 313.15) The coefficient thermal expansion molecular volume [MMIM][MeSO4] calculated experimental values density.

Densities, speeds of sound, and refractive indices the binary mixtures BMIM PF6 (1-butyl-3-methyl imidazolium hexafluorophosphate), HMIM (1-hexyl-3-methylimidazolium OMIM (1-methyl-3-octylimidazolium MMIM CH3SO4 (1,3-dimethylimidazolium methyl sulfate) with 2-butanone, ethylacetate, 2-propanol were determined from (293.15 to 303.15) K. Excess molar volumes, changes index on mixing, deviations in isentropic compressibility calculated for above systems. The liquid−liquid equilibrium data ionic...

This work explores the possibility of increasing ionicity ionic liquids via solubilization inorganic salts in their midst. The resulting purely media—distinct liquid plus salt mixtures—are an extensive concentration range and can be aptly denominated High Ionicity Ionic Liquids (HIILs).

Abstract Liquid–liquid extraction is the most common method for of aromatics from their mixtures with aliphatic hydrocarbons. An ionic liquid (IL) 1‐butyl‐1‐methylpyrrolidinium bis (trifluoromethylsulfonyl) imide [BMpyr][NTf 2 ] was tested as solvent this separation. The liquid–liquid equilibria (LLE) ternary heptane + benzene, or toluene, ethylbenzene were carried out at 298.15 K. ability IL evaluated in terms solute distribution ratio and selectivity. results compared those previously...

The increasing awareness of the environmental impact fluorinated gases (F-gases) used in refrigeration is instigating development technologies to recover and recycle them. With this goal mind, single-component absorption equilibrium isotherms at 303.15 K F-gases different ionic liquids (ILs) were determined using a gravimetric method. selected are most domestic (R-32: difluoromethane, R-125: pentafluoroethane, R-134a: 1,1,1,2-tetrafluoroethane). results show that ILs containing alkyl side...

Several novel fluorinated ionic liquids (FILs), fully miscible with water and excellent surfactant behavior, have been studied for pharmacological applications. The use of these FILs as drug delivery systems can improve the bioavailability, stability efficacy therapeutic proteins. An initial screening toxicity in four different human cell lines indicated that some possess low cytotoxicity. environmental hazard assessment compounds, context Green Pharmacy, is necessary before a pharmaceutical...

The efficient screening of solvents for CO2 capture requires a reliable and robust equation state to characterize compare their thermophysical behavior the desired application. In this work, potentiality 14 ionic liquids (ILs) 7 deep eutectic (DESs) was examined using soft-SAFT as modeling tool these based on key process indicators, namely, cyclic working capacity, enthalpy desorption, diffusion coefficient. Once models were assessed versus experimental data, used predictive calculate...

Fluorinated greenhouse gases (F-gases) are used for various applications, such as in refrigeration and air conditioning, substitutes of the ozone-depleting substances. Their utilization has increased drastically over last few decades, with serious consequences global warming. The Kigali Amendment to Montreal Protocol several national international legislations, 2014 EU F-gas Regulation, aim control emissions these gases. In EU, phase-down hydrofluorocarbons (HFCs) is underway, successive...

In recent years, the fight against climate change and mitigation of impact fluorinated gases (F-gases) on atmosphere is a global concern. Development technologies that help to efficiently separate recycle hydrofluorocarbons (HFCs) at end refrigeration air conditioning equipment life priority. The technological development important stimulate F-gas capture, specifically difluoromethane (R-32) 1,1,1,2-tetrafluoroethane (R-134a), due their high warming potential. this work, COSMO-RS method used...

1-Hexyl-3-methylimidazolium hexafluorophosphate (HMImPF6) is suitable for use as the solvent in petrochemical extraction process removal of heptane from its azeotropic mixture with ethanol. The experimental determination liquid–liquid equilibrium (LLE) ternary system + ethanol HMImPF6 at 298.15 K was carried out. solute distribution ratio and selectivity have been determined tie-line data. A comparative study has made terms data other ionic liquids. NRTL equation verified to accurately correlate

Ionic liquids (ILs) are gaining attention as potential substitutes for classical organic solvents in extraction processes. This article reports the results of a study on use IL 1,3-dimethylimidazolium methyl sulfate ([MMIM][MeSO4]) an solvent petrochemical processes removal heptane from its mixtures with ethanol. The separation and ethanol is valuable but difficult because formation azeotropic mixture. Knowledge liquid−liquid equilibria (LLE) this mixture essential design techniques. For...