Electron paramagnetic resonance studies of the chelate-based ionic liquid in different solvents

Experimental and Theoretical Studies on Selective Separation of Nd from La/Ce/Pr Using [Omim][DOP]

“…10,11 In recent years, ionic liquids (ILs) as novel extractants have been paid much attention to the separation and purification of REEs. 12,13 For example, Wang et al S1 shows all of the chemical reagents and their suppliers used in this work. All chemicals are analytical-grade reagents and are used without purification.…”

“…Solvent extraction is widely used in the metallurgy industry due to its high treatment capacity and simple operation. , The organic phosphine extractants P204 or P507 are commonly used to extract REEs in industry . However, these extractants require alkaline saponification agents, which leads to serious environmental pollution. , In recent years, ionic liquids (ILs) as novel extractants have been paid much attention to the separation and purification of REEs. , For example, Wang et al used tetrabutylphosphonate nitrate ([P 4444 ]­[NO 3 ]) and 1-alkylcarboxylic acid-3-methylimidazolium bis­(trifluoromethylsulfonyl)­imide [(CH 2 ) n COOHmim]­[Tf 2 N] ( n = 3, 5, 7) as the extractants, and the Nd­(III) loading of [P 4444 ]­[NO 3 ] was 0.006 mol·L –1 . , Panigrahi et al investigated the extraction efficiency ( E ) of trihexyl­(tetradecyl)­phosphonium benzoate [T 66614 ]­[BA] and trihexyl­(tetradecyl)­phosphonium bis­(trifluoromethylsulfonyl)­imide [T 66614 ]­[TFSA] for Nd­(III) from chloride media and the E of [T 66614 ]­[BA] for Nd­(III) was 99.1%, and the O – in the anion showed strong affinity with Nd­(III) . Sun et al developed tetraethylammonium bis­(2,4,4-trimethylpentyl)­phosphinite ([N 2222 ]­[BTMPP]), tetraethylammonium di­(2-ethylhexyl)­phosphate ([N 2222 ]­[DEHP]), and tetraethylammonium bis­(2,4,4-trimethylpentyl)­dithiophosphinite ([N 2222 ]­[BTMPDTP]), and they revealed that [N 2222 ]­[DEHP] containing the phosphate group had the E of Nd­(III) close to 100% and the Nd­(III) loading was only 0.0084 mol·L –1 .…”

A FTIR and DFT Combination Study to Reveal the Mechanism of Eliminating the Azeotropy in Ethyl Propionate–n-Propanol System with Ionic Liquid Entrainer

“…Importantly, increasing the use of ILs and their optimization to improve their use as entrainers are also dependent on understanding the microstructures of and micro-interactions between ILs and the other components. The microstructures and interaction properties of liquid systems are fundamental research topics in the scientific community, and those of IL-containing solvent mixtures, including IL–ethanol, IL–water, IL–acetone, IL–acetonitrile, and IL–DMSO systems, have been widely studied [ 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 ]. For example, Chen et al performed experimental (FTIR) and theoretical (DFT) analyses to provide insights into the molecular interactions between 1-methoxyethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide and three polar solvents.…”

Versatile Ionic Gel Driven by Dual Hydrogen Bond Networks: Toward Advanced Lubrication and Self-Healing

“…16,17 As the dispersed liquid phase in ionic gel, the choice of the ionic liquid has an important influence on the physical and structural properties of the ionic gel. 18 In recent years, with the development of the green chemical industry, choline deep eutectic solvents (DESs), as a green ionic liquid, have advantages of low volatility and toxicity, good degradation, low cost, and easy availability and preparation. 19,20 They are usually formed by the combination of a hydrogen bond acceptor (such as a quaternary ammonium salt) and a hydrogen bond donor (such as amides, carboxylic acids, and polyols) in a certain stoichiometric ratio.…”