scholarly journals Review on Hydrometallurgical Recovery of Metals with Deep Eutectic Solvents

2020 ◽  
Vol 1 (3) ◽  
pp. 238-255
Author(s):  
Guillaume Zante ◽  
Maria Boltoeva
Keyword(s):  
Ionic Liquids ◽  
Solvent Extraction ◽  
Physicochemical Properties ◽  
Large Scale ◽  
Deep Eutectic Solvents ◽  
Selective Leaching ◽  
New Class ◽  
Mineral Acids ◽  
Kinetics Of ◽  
Extraction Of Metals

Deep eutectic solvents (DESs) appeared recently as a new class of green designer solvents. The recovery of metals using hydrometallurgy is of major importance with the growth in metal demand. Several authors used these solvents for the hydrometallurgical recovery of metals from primary and secondary resources, and these studies are reviewed in the present work. Hydrophilic DESs can be used for the leaching of metals and have great potential to replace mineral acids, and even to reduce water consumption. Efficient and selective leaching of metals from minerals or wastes is feasible by using DESs. However, the kinetics of leaching as well as the physicochemical properties of DESs are still limiting their large-scale application. Electrochemical recovery from DES is also possible but deserves further investigation. Finally, the recovery of metals from aqueous solutions using hydrophobic DESs was studied in several works. For the solvent extraction of metals, hydrophobic DESs constitute credible alternative ionic liquids.

scholarly journals General, Divergent Platform for Diastereoselective Synthesis of trans-Cyclooctenes with High Reactivity and Favorable Physiochemical Properties

2021 ◽  
Author(s):  
Jessica E. Pigga ◽  
Julia Rosenberger ◽  
Andrew Jemas ◽  
Samantha Boyd ◽  
Olga Dmitrenko ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Large Scale ◽  
High Reactivity ◽  
Diels Alder ◽  
Synthetic Methods ◽  
High Yield ◽  
Physiochemical Properties ◽  
New Class ◽  
State Models

<p><i>trans</i>-Cyclooctenes (TCOs) are essential partners for the fastest known bioorthogonal reactions, but current synthetic methods are limited by poor diastereoselectivity. Especially hard to access are hydrophilic TCOs with favorable physicochemical properties for live cell or <i>in vivo </i>experiments. Described is a new class of TCOs, ‘a-TCOs’, that is prepared in high yield via stereocontrolled 1,2-additions of nucleophiles to trans-cyclooct-4-enone, which itself was prepared on large scale in two steps from 1,5-cyclooctadiene. Computational transition state models rationalize the diastereoselectivity of 1,2-additions to deliver a-TCO products, which were also shown to be more reactive than standard TCOs and less hydrophobic than even a <i>trans</i>-oxocene analog. Illustrating the favorable physicochemical properties of a-TCOs, a fluorescent TAMRA derivative in live HeLa cells was shown to be cell-permeable through intracellular Diels-Alder chemistry and to washout more rapidly than other TCOs.</p>

scholarly journals General, Divergent Platform for Diastereoselective Synthesis of trans-Cyclooctenes with High Reactivity and Favorable Physiochemical Properties

2021 ◽  
Author(s):  
Jessica E. Pigga ◽  
Julia Rosenberger ◽  
Andrew Jemas ◽  
Samantha Boyd ◽  
Olga Dmitrenko ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Large Scale ◽  
High Reactivity ◽  
Diels Alder ◽  
Synthetic Methods ◽  
High Yield ◽  
Physiochemical Properties ◽  
New Class ◽  
State Models

<p><i>trans</i>-Cyclooctenes (TCOs) are essential partners for the fastest known bioorthogonal reactions, but current synthetic methods are limited by poor diastereoselectivity. Especially hard to access are hydrophilic TCOs with favorable physicochemical properties for live cell or <i>in vivo </i>experiments. Described is a new class of TCOs, ‘a-TCOs’, that is prepared in high yield via stereocontrolled 1,2-additions of nucleophiles to trans-cyclooct-4-enone, which itself was prepared on large scale in two steps from 1,5-cyclooctadiene. Computational transition state models rationalize the diastereoselectivity of 1,2-additions to deliver a-TCO products, which were also shown to be more reactive than standard TCOs and less hydrophobic than even a <i>trans</i>-oxocene analog. Illustrating the favorable physicochemical properties of a-TCOs, a fluorescent TAMRA derivative in live HeLa cells was shown to be cell-permeable through intracellular Diels-Alder chemistry and to washout more rapidly than other TCOs.</p>

Choline chloride based ionic liquids containing nickel chloride: Physicochemical properties and kinetics of Ni(II) electroreduction

2017 ◽  
Vol 245 ◽  
pp. 133-145 ◽  
Author(s):  
A.A. Kityk ◽  
D.A. Shaiderov ◽  
E.A. Vasil'eva ◽  
V.S. Protsenko ◽  
F.I. Danilov
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Choline Chloride ◽  
Nickel Chloride ◽  
Kinetics Of

Activity coefficients in deep eutectic solvents: implications for the solvent extraction of metals

2018 ◽  
Vol 42 (3) ◽  
pp. 2006-2012 ◽  
Author(s):  
Mark R. St J. Foreman ◽  
Stellan Holgersson ◽  
Conor McPhee ◽  
Mikhail S. Tyumentsev
Keyword(s):  
Sodium Chloride ◽  
Solvent Extraction ◽  
Activity Coefficient ◽  
Activity Coefficients ◽  
Deep Eutectic Solvent ◽  
Deep Eutectic Solvents ◽  
Aqueous Sodium ◽  
The Difference ◽  
Extraction Of Metals

On the difference in the activity coefficient between aqueous sodium chloride and a deep eutectic solvent.

scholarly journals Ionic Liquids as Components of Systems for Metal Extraction

2022 ◽  
Vol 6 (1) ◽  
pp. 6
Author(s):  
Pavel A. Yudaev ◽  
Evgeniy M. Chistyakov
Keyword(s):  
Heavy Metals ◽  
Ionic Liquids ◽  
Solvent Extraction ◽  
Research And Development ◽  
Industrial Wastewater ◽  
Noble Metals ◽  
Metal Extraction ◽  
Extraction And Separation ◽  
Group 16 ◽  
Extraction Of Metals

This review addresses research and development on the use of ionic liquids as extractants and diluents in the solvent extraction of metals. Primary attention is given to the efficiency and selectivity of metal extraction from industrial wastewater with ionic liquids composed of various cations and anions. The review covers literature sources published in the period of 2010–2021. The bibliography includes 98 references dedicated to research on the extraction and separation of lanthanides (17 sources), actinides (5 sources), heavy metals (35 sources), noble metals, including the platinum group (16 sources), and some other metals.

scholarly journals TransfersomILs: From Ionic Liquids to a New Class of Nanovesicular Systems

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 7
Author(s):  
Ana Júlio ◽  
João Guilherme Costa ◽  
Catarina Pereira-Leite ◽  
Tânia Santos de Almeida
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Colloidal Stability ◽  
Storage Stability ◽  
Pharmaceutical Formulations ◽  
Controlled Delivery ◽  
New Class ◽  
Improved Performance ◽  
And Performance ◽  
The Impact

Ionic liquids (ILs) have increasingly been studied as key materials to upgrade the performance of many pharmaceutical formulations. In controlled delivery systems, ILs have improved multiple physicochemical properties, showing the relevance of continuing to study their incorporation into these formulations. Transfersomes are biocompatible nanovesicular systems, quite useful in controlled delivery. They have promising characteristics, such as elasticity and deformability, making them suitable for cutaneous delivery. Nonetheless, their overall properties and performance may still be improved. Herein, new TransfersomILs systems to load rutin were developed and the physicochemical properties of the formulations were assessed. These systems were prepared based on an optimized formulation obtained from a Box–Behnken factorial design (BBD). The impact of imidazole-based ILs, cholinium-based ILs, and their combinations on the cell viability of HaCaT cells and on the solubility of rutin was initially assessed. The newly developed TransfersomILs containing rutin presented a smaller size and, in general, a higher association efficiency, loading capacity, and total amount of drug release compared to the formulation without IL. The ILs also promoted the colloidal stability of the vesicles, upgrading storage stability. Thus, ILs were a bridge to develop new TransfersomILs systems with an overall improved performance.

scholarly journals Ionic Liquids and Deep Eutectic Solvents for Application in Pharmaceutics

Pharmaceutics ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 909 ◽  
Author(s):  
Miguel M. Santos ◽  
Luís C. Branco
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Deep Eutectic Solvents ◽  
Biological Research ◽  
Pharmaceutical Sciences ◽  
Physical Chemical

Over the last few decades, Ionic Liquids (ILs) and Deep Eutectic Solvents (DES) have been studied academically throughout many fields of chemical and biological research, including pharmaceutical sciences, due to their highly tunable physical, chemical and physicochemical properties [...]

Ionic liquids with fluorine-containing anions as a new class of functional materials: features of the synthesis, physicochemical properties, and use

2020 ◽  
Vol 69 (1) ◽  
pp. 17-31
Author(s):  
S. A. Prikhod’ko ◽  
A. Yu. Shabalin ◽  
M. M. Shmakov ◽  
V. V. Bardin ◽  
N. Yu. Adonin
Keyword(s):  
Ionic Liquids ◽  
Physicochemical Properties ◽  
Functional Materials ◽  
New Class

scholarly journals Solvent extraction fractionation of manganese, cobalt, nickel and lithium using ionic liquids and deep eutectic solvents

2020 ◽  
Vol 156 ◽  
pp. 106512 ◽  
Author(s):  
Guillaume Zante ◽  
Arthur Braun ◽  
Abderrazak Masmoudi ◽  
Rémi Barillon ◽  
Dominique Trébouet ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Solvent Extraction ◽  
Deep Eutectic Solvents ◽  
Cobalt Nickel
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