Synthesis and Extraction Properties of 1,2-Bis(amidoxime) Derivatives

2002 ◽  
Vol 67 (2) ◽  
pp. 209-218 ◽  
Author(s):  
Ramazan Gup ◽  
H. Korkmaz Alpoguz ◽  
A. Dincer Beduk
Keyword(s):  
Transition Metals ◽  
Alkali Metals ◽  
Liquid Extraction ◽  
High Affinity ◽  
Liquid Liquid Extraction ◽  
Extraction Properties ◽  
Complexing Properties

Four 1,2-bis(amidoxime)s bearing benzoate groups were synthesized. Their complexing properties were studied by the liquid-liquid extraction of selected alkali (Na+ and K+) and transition metals (Hg2+, Cu2+, Pb2+ and Ni2+). It has been observed that all ligands show a high affinity to Cu2+ and Hg2+ ions, whereas almost no affinity to alkali metals.

Liquid—liquid extraction of transition metals with acylthioacetamides

1982 ◽  
Vol 140 (1) ◽  
pp. 171-177 ◽  
Author(s):  
E. Ludwig ◽  
E. Uhlemann ◽  
K. Gloe ◽  
P. Mühl
Keyword(s):  
Transition Metals ◽  
Liquid Extraction ◽  
Liquid Liquid Extraction

Synthesis and Extraction Behaviour of Calix[4]arenes Partially Substituted at the Wide Rim by Carbamoylmethylphosphine Oxide (CMPO) Functions

2003 ◽  
Vol 56 (11) ◽  
pp. 1113 ◽  
Author(s):  
Françoise Arnaud-Neu ◽  
Silvia Barboso ◽  
Volker Böhmer ◽  
Frédéric Brisach ◽  
Laetitia Delmau ◽  
...  
Keyword(s):  
Single Crystal ◽  
Liquid Extraction ◽  
Hydrogen Atoms ◽  
Cone Conformation ◽  
X Ray ◽  
Liquid Liquid Extraction ◽  
Extraction Behaviour ◽  
Extraction Properties

Tetraethers of calix[4]arenes fixed in the cone conformation and substituted at their wide rim by one to three CMPO residues and hydrogen atoms or t-butyl moieties in the remaining position(s) were synthesized. Liquid/liquid extraction studies of selected lanthanides and actinides were undertaken with these calix[4]arenes, including also a linear trimer, in order to obtain a better understanding for the extraction properties of the corresponding calix[4]arene substituted by four CMPO functions. The structure of the 1,3-di-CMPO derivative was confirmed by single crystal X-ray analysis.

Complexing properties of α-isosaccharinate: thorium

2006 ◽  
Vol 94 (9-11) ◽  
Author(s):  
Stefan Allard ◽  
Christian Ekberg
Keyword(s):  
Organic Phase ◽  
Liquid Extraction ◽  
Extraction Techniques ◽  
Liquid Liquid Extraction ◽  
Complexing Properties

The complexation of Th with α-isosaccharinate has been studied using liquid–liquid-extraction techniques. An organic phase consisting of 0.025 M acetylacetone in toluene was used with a 1.0 M NaClO

Room Temperature Ionic Liquids as Novel Media for Zn Ions Extraction from Aqueous Solutions

2012 ◽  
Vol 1380 ◽  
Author(s):  
Leticia E. Hernández Cruz ◽  
Felipe Legorreta García ◽  
Ana M. Herrera González
Keyword(s):  
Ionic Liquids ◽  
Room Temperature ◽  
Extraction Process ◽  
Distribution Coefficients ◽  
Liquid Extraction ◽  
Metal Extraction ◽  
High Affinity ◽  
Low Viscosity ◽  
Liquid Liquid Extraction ◽  
Zn Ions

ABSTRACTWastewaters often contain offensive cations. Because of their high affinity for water, it is difficult to remove those using conventional solvents for liquid- liquid extraction [1]. Hydrophobic ionic liquids may provide a useful extraction process. Because the properties of ionic liquids are turnable, it may be possible to identify some ionic liquids that have low viscosity, very low solubility in water, and high affinity for select metal ions [2]. In this sense in this work liquid- liquid extraction of dilute Zn ions from water was performed near room temperature with two ionic liquids (IL). Distribution coefficients are reported for Zn ions extracted with bromide 1-hexyl-pyridinium and bromide 1-octyl-pyridinium diluted in decanol. The extraction has been studied, and these confirmed that the metal extraction proceeds via a cation – exchange mechanism. Furthermore, stripping of Zn (II) from ILs into an aqueous phase by sulfuric acid (1 M) and recycling of the extracting ILs phase was successfully accomplished.

scholarly journals Assessment of ligand extraction properties: an intercomparison campaign amongst EUROPARTners

2008 ◽  
Vol 96 (4-5) ◽  
Author(s):  
Clement Hill ◽  
Jean-F. Desreux ◽  
Christian Ekberg ◽  
Amparo Glez Espartero ◽  
M. Galetta ◽  
...  
Keyword(s):  
Metal Cation ◽  
Cation Distribution ◽  
Liquid Extraction ◽  
The Third ◽  
Liquid Liquid Extraction ◽  
Trivalent Actinides ◽  
Extraction Properties ◽  
Integrated Project

An intercomparison campaign was organized at the beginning of the European FP6 EUROPART Integrated Project, among the partners involved in the assessment of the extracting properties of novel ligands, in order to check their accuracy and reliability when determining metal cation distribution ratios. Three different extracting systems, presenting various selectivity and affinity towards trivalent actinides were selected: (i) CMPO, (ii) TPTZ and (iii) BTP. Although some differences could be pointed out in the implementation of liquid–liquid extraction tests, the distribution ratios measured by the nine partners were fairly reproducible (<20% deviation) for the first two extracting systems. However, large discrepancies occurred when testing the third extracting system, due to its strong hydrolytic instability, thus pointing out the difficulty of assessing extraction properties of instable ligands.

scholarly journals Liquid-Liquid Extraction of Transition Metal Cations by Glyoximes and Their Macrocyclic Glyoxime Ether Derivatives

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Nazan Karapinar ◽  
Emin Karapinar ◽  
Emine Ozcan
Keyword(s):  
Transition Metal ◽  
Transition Metals ◽  
Crown Ether ◽  
Aqueous Phase ◽  
Organic Phase ◽  
Equilibrium Constants ◽  
Liquid Extraction ◽  
Extraction Equilibrium ◽  
Liquid Liquid Extraction ◽  
Extraction Constants

Liquid-liquid extraction of various alkalis (Li+, Na+, K+, and Cs+), transition metals (Co2+, Ni2+, Cu2+, Zn2+, Cd2+, and Hg2+), and Pb2+cations with phenylglyoxime (L1), p-tolylglyoxime (L2),N′-(4′-Benzo[15-crown-5])phenylaminoglyoxime (L3), andN′-(4′-Benzo[15-crown-5])-p-tolylaminoglyoxime (L4) from the aqueous phase into the organic phase was carried out. For comparison, the corresponding two glyoximes and their macrocyclic glyoxime ether derivatives were also examined. Crown ether groups having ligands (L3,L4) carry especially Na+cation from aqueous phase to organic phase. The extraction equilibrium constants (Kex) for complexes of ligands with Cu2+and Hg2+metal picrates between dichloromethane and water have been determined at 25°C. The values of the extraction constants (logKex) were determined to be 12.27, 13.37, 12.94, and 12.39 for Cu2+and 10.29, 10.62, 11.53, and 11.97 for Hg2+with L1–L4, respectively.

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