Synthese de nouveaux composes de l’acide phosphonique et mise en évidence de leur acidite, affinite de chélation et de leurs proprietes inhibitrices de corrosion

Abstract

This work has been devoted to the synthesis of a new chelating phosphonate derivative and its characterization by physicochemical methods and spectroscopic (IR, UV-Vis). The electrochemical properties of the synthesized product of the acid 2 - (méthylideneamino) - 3 phenylpropanoic) and those of ALPAP hydroxy-6-methyl-4-nitrobenzyl phosphonic AHMNBMP and their mixture were prepared by the method voltammetry cyclic. Complexing power of the molecules ALPAP, and mixtures thereof AHMNBMP binary trinary and study has been overlooked Fe3 + cations in DMF medium according to molar ratios. The work is crowned by the presentation of the results of the study on the inhibitory potency of the mixture of corrosion ALPAP / AHMNBMP on the carbon steel XC52 in an aggressive environment of 3% NaCl.