%0 Journal Article
%T SYNTHESIS OF AZO-SCHIFF BASES, THEIR THERMAL BEHAVIOR STUDY, AND USING IN EXTRACTION OF COPPER (CU2+)
%A Hamid Hussein Eissa
%A Khuloud Hamak
%J Journal of Current Research in Science
%D 2013
%I Islamic press
%X New Azo Schiff bases was synthesized by reaction 3-formyl-4-hydroxy phenylazo benzene with Pyridine-2,6-Dicarbohydrazide has been characterized by elemental analyses and IR, mass, 1HNMR, and 13CNMR spectral data. Azo Schiff base has been studied by liquid-liquid extraction towards the metal ion Cu2+ from aqueous phase to organic phase. behave as good extractant ligand for Cupper ion Cu2+ from aqueous solution, and the study of condition of extraction shows that the optimum pH values for extraction was (pH= 10), so the suitable concentration of Cu2+ ion in aqueous solution which is giving highest distribution ratio (D) was (40 ¦Ìg), in addition the optimum shaking time to reach the equilibria was (60 min.), as well as the stoichiometric study by using Slope Analysis Method shows the structure of Cu2+ ion complex with ligand was 1 : 1 (metal : ligand), in addition the study of organic solvent effect appear there is no straight line relation between the distribution ratio for extraction of Cu2+ ion and dielectric constant for organic solvents but this study demonstrate there is an effect for the structure of organic solvent used, thermodynamic study shows the complexation reaction an endothermic.
%K Pyridine-2
%K 6-Dicarbohydrazide
%K Liquid-Liquid Extraction
%K Stoichiometric
%K Thermodynamic
%U http://www.jcrs010.com/files/158_JCRS_20130625(2).pdf