Extraction Mechanism of Metal Ion from Aqueous Solution to the Hydrophobic Ionic Liquid, 1-Butyl-3-methylimidazolium Nonafluorobutanesulfonate

2007 ◽  
Vol 138 (11) ◽  
pp. 1145-1151 ◽  
Author(s):  
Nobuyuki Kozonoi ◽  
Yasuhisa Ikeda
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquid ◽  
Metal Ion ◽  
Extraction Mechanism ◽  
Hydrophobic Ionic Liquid

scholarly journals Ultrasonic Extraction of Tropane Alkaloids from Radix physochlainae Using as Extractant an Ionic Liquid with Similar Structure

Molecules ◽  
2019 ◽  
Vol 24 (16) ◽  
pp. 2897 ◽  
Author(s):  
Alula Yohannes ◽  
Baohui Zhang ◽  
Bing Dong ◽  
Shun Yao
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquid ◽  
Extraction Efficiency ◽  
Tropane Alkaloids ◽  
Raw Material ◽  
Extraction Time ◽  
Ultrasonic Power ◽  
Extraction Mechanism ◽  
Extraction Solvent ◽  
Solid Liquid

In this research, tropane alkaloids in Radix physochlainae were extracted by tropine-type ionic liquid (IL) aqueous solutions under ultrasound assistance, and N-propyltropine hexafluorophosphate ([C3Tr][PF6]) was found to be the most ideal IL in this extraction mode after comprehensive screening. When 0.03 mol/L [C3Tr][PF6] aqueous solution was chosen as the extraction solvent, the solid-liquid ratio of raw material powders and ionic liquid aqueous solution was 1:20 (g/mL), ultrasonic power was 90 W and extraction time was 30 min, the extraction efficiency of tropane alkaloids has reached 121.3%. Compared with common heating extraction, it can further shorten the extraction time, improve extraction efficiency and decrease IL consumption. Furthermore, extraction mechanism together with potential toxicity of IL have been explored and discussed.

Solvent Extraction of Rhenium(VII) from Aqueous Solution Assisted by Hydrophobic Ionic Liquid

2017 ◽  
Vol 62 (3) ◽  
pp. 1094-1098 ◽  
Author(s):  
Da-wei Fang ◽  
Zong-ren Song ◽  
Si-cai Zhang ◽  
Jun Li ◽  
Shu-liang Zang
Keyword(s):  
Aqueous Solution ◽  
Ionic Liquid ◽  
Solvent Extraction ◽  
Hydrophobic Ionic Liquid

Kinetics and mechanism of the reaction of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione

1990 ◽  
Vol 55 (8) ◽  
pp. 1984-1990 ◽  
Author(s):  
José M. Hernando ◽  
Olimpio Montero ◽  
Carlos Blanco
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Activation Parameters ◽  
Enol Form ◽  
Kinetics And Mechanism ◽  
Kinetic Constants ◽  
Steric Factors ◽  
Kinetics Of ◽  
Mechanism Of The Reaction

The kinetics of the reactions of iron(III) with 6-methyl-2,4-heptanedione and 3,5-heptanedione to form the corresponding monocomplexes have been studied spectrophotometrically in the range 5 °C to 16 °C at I 25 mol l-1 in aqueous solution. In the proposed mechanism for the two complexes, the enol form reacts with the metal ion by parallel acid-independent and inverse-acid paths. The kinetic constants for both pathways have been calculated at five temperatures. Activation parameters have also been calculated. The results are consistent with an associative activation for Fe(H2O)63+ and dissociative activation for Fe(H2O)5(OH)2+. The differences in the results for the complexes of heptanediones studied are interpreted in terms of steric factors.

scholarly journals Recent Advance in Ionic‐Liquid‐Based Electrolytes for Rechargeable Metal‐Ion Batteries

2021 ◽  
pp. 2004490
Author(s):  
Wenjun Zhou ◽  
Meng Zhang ◽  
Xiangyue Kong ◽  
Weiwei Huang ◽  
Qichun Zhang
Keyword(s):  
Ionic Liquid ◽  
Metal Ion

scholarly journals H2O coordination in macropa complexes of f elements (Ac, La, Lu): feasibility of the 11th coordination site

2021 ◽  
Author(s):  
Attila Kovács ◽  
Zoltán Varga
Keyword(s):  
Aqueous Solution ◽  
Metal Ion ◽  
Density Functional ◽  
Molecular Level ◽  
Density Functional Theory Calculations ◽  
Functional Theory ◽  
Coordination Site ◽  
Additional Ligand ◽  
Ligand Coordination ◽  
Bonding Properties

AbstractThe feasibility of an additional ligand coordination at the 11th coordination site of actinium, lanthanum, and lutetium ions in 10-fold coordinated macropa complexes has been studied by means of density functional theory calculations. The study covered the two main macropa conformers, Δ(δλδ)(δλδ) and Δ(λδλ)(λδλ), favoured by larger (Ac3+, La3+) and smaller (Lu3+) ions, respectively. At the molecular level, the coordination of H2O is the most favourable to the largest Ac3+ while only slightly less to La3+. Protonation of the picoline arms enhances the coordination by shifting the metal ion closer to the open site of the ligand. The choice of macropa conformer has only a slight influence on the strength and bonding properties of the H2O coordination. Aqueous solution environment decreases considerably the energy gain of H2O coordination at the 11th coordination site.

Sign in / Sign up

Export Citation Format

Share Document