Preparation, Characterization and Evaluation of Extraction Effeciency of N-p-tolyl-N benzohydroxamic Acid towards Certain Metal Ions
Nuha Y. ELamin, Elmugdad Ahmed Ali
Asian Journal of Applied Chemistry Research · pp. 30–39 · Published 15 Mar 2021
10.9734/ajacr/2021/v8i130184Abstract
The hydroxamic acid was prepared by the partial reduction of p- nitro toluene to give N-p-tolyl hydroxyl amine which was coupled with benzoyl chloride to give N-p-tolyl-N-benzohydroxamic acid.The hydroxamic acid prepared was identified by their characteristic colored reaction with vanadium (V) and iron (lll), melting point, I.R. spectra, 1H NMR and mass spectrometry.The extractive properties of hydroxamic acids towards the metal ions like Fe (lll), Cu (ll), Ni (ll) and Co (ll) were examined using appropriate organic solvent. N-p- tolyl -N-benzohydroxamic acid was found to have a maximum extraction for Fe (lll) 75.10% at pH 5.0, Cu (ll) 99.81% at pH 5.0, Ni (ll) 59.45% at pH 7.0 and Co (ll) 99.40% at pH 10.0.The hydroxamic acid was found to extract efficiently metals like Ni (ll) in neutral pH values, Fe (lll), Cu (ll), in pH near to neutral and Co (ll) at alkali pH values.
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