Solubility of carbon dioxide in a choline chloride–ethylene glycol based deep eutectic solvent

a b s t r a c tDeep eutectic solvents (DESs) have been recently emerged as new ionic liquids (ILs) analogues. The low vapor pressure, inflammability, biodegradability and positive effect on the environment make DESs more favorable as neoteric solvents. In this study, triethylene glycol (TEG) was selected as a hydrogen bond donor (HBD) to form DESs with five types of phosphonium and ammonium salts, namely methyltriphenylphosphonium bromide (MTPB), benzyltriphenylphosphonium chloride (BTPC), allyltriphenylphosphonium bromide (ATPB), choline chloride (2-hydroxyethyl-trimethylammonium) (ChCl) and N,N-diethylenethanolammonium chloride (DAC). The physical properties of the synthesized DESs were measured such as freezing point, viscosity, electrical conductivity, Walden rule, density, pH and water content. In addition, the Fourier transform infrared spectroscopy (FTIR) was employed to study the functional groups. The experiments were conducted at different temperatures, i.e. 25-80°C. It was found that DESs have suitable properties to be used in industrial processes such as separation, extraction, biochemical, petroleum and gas technology.

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“…On the other hand, DES 35 has the highest conductivity at room temperature and at 80°C; Fig. 2 (2) where:…”

Section: Conductivitymentioning

confidence: 98%

“…DESs are widely known as green alternative solvents to the conventional ILs [2,3]. DES is a combination of two or more compounds which has a melting point lower than that of its individual components.…”

Section: Introductionmentioning

confidence: 99%

Triethylene glycol based deep eutectic solvents and their physical properties

Hayyan

Aissaoui

Hashim

et al. 2015

Journal of the Taiwan Institute of Chemical Engineers

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“…57,58 In recent works Maugeri et al 59 and Florindo et al 60 [LEV] at 1:2 molar ratio, CHCl_LEV_1_2). 59,60 The available studies on CO 2 capture using [CH][Cl] based DES are mostly limited to systems containing HBDs such as urea, glycerol, ethyleneglycol or carboxylic acids such as malonic or lactic, 64,65,66,67,68,69,70,71,72 but no studies for DES involving [LEV] are reported. Therefore, a study on the suitability of CHCl_LEV_1_2 DES for CO 2 capturing purposes is reported in this work.…”

Section: Introductionmentioning

confidence: 99%

A detailed study of cholinium chloride and levulinic acid deep eutectic solvent system for CO₂capture via experimental and molecular simulation approaches

Ullah

Atilhan

Anaya

et al. 2015

Phys. Chem. Chem. Phys.

138

117

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Choline chloride + levulinic acid deep eutectic solvent is studied as a suitable material for CO2 capturing purposes. The most relevant physicochemical properties of this solvent are reported together with the CO2 solubility as a function of temperature. The corrosivity of this solvent is studied showing better performance than amine-based solvents. A theoretical study using both density functional theory and molecular dynamics approaches is carried out to analyze the properties of this fluid from the nanoscopic viewpoint, and their relationship with the macroscopic behavior of the system and its ability for CO2 capturing. The behavior of the liquid-gas interface is also studied and its role on the CO2 absorption mechanism is analyzed. The reported combined experimental and theoretical approach leads to a complete picture of the behavior of this new sorbent with regard to CO2, which together with its low cost, and the suitable environmental and toxicological properties of this solvent, lead to a promising candidate for CO2 capturing technological applications.

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“…At room temperature, a eutectic mixture can fall under ionic liquid; it has the general properties of ILs, such as nonvolatility, high fluidity, low melting temperature, high boiling temperature, and nonflammability [26,[28][29][30][31][32]. These eutectic mixtures are made up of organic salts, organic acids, organic neutral molecules, or inorganic salts, which is the only difference from the traditional ILs comprising cations and anions.…”

Section: Deep Eutectic Solventsmentioning

confidence: 99%

Room-Temperature Molten Salts: Protic Ionic Liquids and Deep Eutectic Solvents as Media for Electrochemical Application

Anouti

2015

Electrochemistry in Ionic Liquids

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Ionic liquids (ILs) are room-temperature molten salts (RTMS) composed mostly of organic ions that may undergo almost unlimited structural variations. ILs and deep eutectic solvents (DESs) have been applied in various fields, such as electrolytes for lithium ion batteries, redox flow batteries (RFBs), electrodeposition, and electropolishing, and even in fuel cells. This chapter covers the newest aspects of H-donor ILs in applications where their transport properties (ion conductivity, diffusion, and viscosity) are exploited, for example, as electrochemical solvents for energy storage where conventional media, organic solvents (in batteries), or water (in supercapacitors) fail. Metal nanoparticles' (NPs) formulation and stabilization in H-donor RTMS with some unique size, shape, and properties are also discussed. In these decidedly different materials, a mixture with a molecular solvent shows electroactivity that is not exhibited in more traditional systems, creating huge potential for energy storage and electrocatalysis. The remarkable recent increase in the level of interest in RTMS (protic ionic liquids, PILs, and DESs) in academics and industry is illustrated by the rapid growth in the number of publications on the topic (Fig. 7.1), with more than a 100-fold increase observed over the period 2004 to 2014.The first main objective of this chapter is to summarize the synthesis and physical properties of PILs and DESs and discuss their suitability as green solvents for different applications. The second main objective is to review the electrochemical applications of RTMS and discuss their advantages and disadvantages as electrolytes in comparison with an aprotic homologue for energy storage applications. I hope to generate interest in the wider community and encourage others to make use of proton-donor RTMS-PILs and DESs-in tackling scientific challenges.

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Solubility of carbon dioxide in a choline chloride–ethylene glycol based deep eutectic solvent

Cited by 236 publications

References 26 publications

Triethylene glycol based deep eutectic solvents and their physical properties

Triethylene glycol based deep eutectic solvents and their physical properties

A detailed study of cholinium chloride and levulinic acid deep eutectic solvent system for CO₂capture via experimental and molecular simulation approaches

Room-Temperature Molten Salts: Protic Ionic Liquids and Deep Eutectic Solvents as Media for Electrochemical Application

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Solubility of carbon dioxide in a choline chloride–ethylene glycol based deep eutectic solvent

Cited by 236 publications

References 26 publications

Triethylene glycol based deep eutectic solvents and their physical properties

Triethylene glycol based deep eutectic solvents and their physical properties

A detailed study of cholinium chloride and levulinic acid deep eutectic solvent system for CO2capture via experimental and molecular simulation approaches

Room-Temperature Molten Salts: Protic Ionic Liquids and Deep Eutectic Solvents as Media for Electrochemical Application

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A detailed study of cholinium chloride and levulinic acid deep eutectic solvent system for CO₂capture via experimental and molecular simulation approaches