Calixarenes are condensation products of phenols to substituted and formaldehyde in an alkaline medium 1. In this work, the extraction is carried out from an aqueous phase to an organic phase through the formation of complexes of sodium metal and potassium with the macrocyclic ligand calixarene p- tbutilcalix [4 ] arene tetraetanoato acetate ( L ) dissolved in chloroform the pH of 5, 7.5 and 8.5 . The absorbance of the alkali metal picrates ( - , K + Pi - , Na + Pi Pi - = 2,4,6 trinitrophenol ) was measured , and the complexes formed L M + , Pi -org organic phase at 310 nm . Experiments show that the extraction calixarene ( L ) ligand extracted at pH 7.5 to 72.3% sodium ion (I) in an aqueous solution of 2 to 20 ppm of concentration and extr...
The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was car-ri...
The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was carrie...
25,26,27,28-Tetraisonitrosoaceto calix[4]arene [L8] was synthesized by reacting 25,26,27,28-tetraace...
Calixarenes are condensation products of phenols to substituted and formaldehyde in an alkaline medi...
The ionophore solvent extraction of various alkali metal and transition metal cations from the aqueo...
The work presented in this thesis is focused on the removal of ions from saline water using macrocyc...
Liquid-liquid extraction of various alkali, alkaline-earth, and transition metal cations with o-(4-h...
The selective liquid-liquid extraction of various alkaline, alkaline-earth and transition metal cati...
Chemical modifications of calixarenes give rise to a great variety of derivatives with tuneable bind...
<div><p>A family of calix-crown hybrid molecules containing calix[4]arene and crown-5/6, either at l...
The selective liquid-liquid extraction of various alkaline, alkaline-earth and transition metal cati...
This thesis is concerned with an investigation of the thermodynamic parameters of complexation of ca...
Following an overview on the progress so far made in the general area of calixarene chemistry, this ...
Ce travail porte sur l'étude des propriétés complexantes, extractantes et de transport des calix[4]a...
International audienceIn the frame of solvent extraction processes, rather quick and efficient extra...
The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was car-ri...
The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was carrie...
25,26,27,28-Tetraisonitrosoaceto calix[4]arene [L8] was synthesized by reacting 25,26,27,28-tetraace...
Calixarenes are condensation products of phenols to substituted and formaldehyde in an alkaline medi...
The ionophore solvent extraction of various alkali metal and transition metal cations from the aqueo...
The work presented in this thesis is focused on the removal of ions from saline water using macrocyc...
Liquid-liquid extraction of various alkali, alkaline-earth, and transition metal cations with o-(4-h...
The selective liquid-liquid extraction of various alkaline, alkaline-earth and transition metal cati...
Chemical modifications of calixarenes give rise to a great variety of derivatives with tuneable bind...
<div><p>A family of calix-crown hybrid molecules containing calix[4]arene and crown-5/6, either at l...
The selective liquid-liquid extraction of various alkaline, alkaline-earth and transition metal cati...
This thesis is concerned with an investigation of the thermodynamic parameters of complexation of ca...
Following an overview on the progress so far made in the general area of calixarene chemistry, this ...
Ce travail porte sur l'étude des propriétés complexantes, extractantes et de transport des calix[4]a...
International audienceIn the frame of solvent extraction processes, rather quick and efficient extra...
The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was car-ri...
The solvent extraction of Fe3+ cations from the aqueous to the organic (chloroform) phase was carrie...
25,26,27,28-Tetraisonitrosoaceto calix[4]arene [L8] was synthesized by reacting 25,26,27,28-tetraace...