Author/Authors :
Zouarhi, Meryem Department of Chemistry - University Ibn Tofail - Morocco , Abbout, Said Department of Chemistry - University Ibn Tofail - Morocco , Benzidia, Bouchra Department of Chemistry - University Ibn Tofail - Morocco , Chellouli, Mohamed Department of Chemistry - University Ibn Tofail - Morocco , Hammouch, Hind Department of Chemistry - University Ibn Tofail - Morocco , Erramli, Hamid Department of Chemistry - University Ibn Tofail - Morocco , Hassane, Said O. Said University of the Comoros - The Comoro Islands , Bettach, Naima Laboratory of Organic Synthesis - University Hassan II - Morocco , Hajjaji, Najat Department of Chemistry - University Ibn Tofail - Morocco
Abstract :
The aim of this work is to characterize the seed oil of Aleurites moluccana and to develop a new formulation based on this oil (noted as “ALM”), which was used as a green corrosion inhibitor for iron in acidic solution. The fatty acid composition was determined using the chromatography gas GC/MS analysis. The Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization measurements were carried out for different concentrations of the ALM formulation, immersion times and rotation speeds. The surface analyses was performed by scanning electron microscopy (SEM) coupled with the energy dispersive X-Ray analysis (EDX). The results showed that the seeds oil of Aleurites moluccana was principally composed of unsaturated fatty acids (Oleic, Linoleic and Linoleinic acids) reached a value of 88%. The inhibition efficiency increases with increasing of concentration to attain a value of 97% at 250 ppm of the ALM formulation and acts as a mixed type inhibitor. This efficiency is reinforced by increasing immersion time and the rotation speeds values of the working electrode
Keywords :
Aleurites moluccana , Formulation ALM , Corrosion inhibitor , Iron , Acid rainwater solution
