The synthesis and inhibition efficiency of 2-(2-aminoethylamino)-1-phenylethanol

BOHLER;Das Land Steiermark;et al.;OMV;SANDVIK;voestalpinEuropean Corrosion Congress, EUROCORR 2015 --6 September 2015 through 10 September 2015 -- --2-(2-aminoethylamino)-1-phenylethanol compound was newly synthesized in our own laboratory, as a candidate for effective corrosion inhibitor against steel corrosion in acidic environment. Styrene oxide and ethylene diamine were used as starting materials. The molecular design was anticipated to exhibit strong adsorptive interaction with the surface via-NH2 group and hydrophobicity on top of adsorption layer due to presence of aromatic ring. Then, the inhibition efficiency of 2-(2-aminoethylamino)-1-phenylethanol has been investigated for mild steel corrosion in 0.5 M HCl solution. Electrochemical impedance spectroscopy and potentiodynamic measurements were utilized for different concentration and temperature conditions, for better understanding the inhibition mechanism. Also, further surface analysis was realized with help of scanning electron microscopy. All the results showed that this inhibitor has good inhibition efficiency on mild steel in 0.5 M HCl solution