Vol. 6, Issue 4 (2018)
Computational investigations on corrosion inhibition potentials of schiff bases synthesized from linoleic and benheric acids on mild steel in HCl medium
Author(s): FK Ekuma, UI Ekanem and HO Chukwuemeka-Okorie
Abstract: The inhibition efficiencies of two Schiff bases 2[2-diethylamino) ethyl methyl amino)-4-methy1-5-3 (3-methyl sulfanyl propy1 amino) methyliene cyclohedien-1-one (DEMS) and [1-(azepan-1-yl)2-2-[4-(2-tert-butyl sulfanylethyl piperazin-1-yl] ethanone (ATSP) synthesized from linoleic and benheric acids on mild steel coupons in 1M HCl were investigated at a temperature of 30 oC using weight loss and quantum chemical techniques. The schiff bases were characterized using Infrared (IR) Spectrophotometer. It was observed from the results that their inhibition efficiencies increased with increase in concentrations of the Schiff bases. From the calculated global reactivity parameter, it was seen that the inhibitor, DEMS has more potency to adsorb onto the surface of the mild steel than the inhibitor, ATSP due to its smaller energy gap (∆E), higher value of dipole moment (μ), higher value of chemical softness (δ), lower value of global hardness (ŋ), higher electronegativity value (X) and higher value of maximum number of electrons transferred (∆N). All these make DEMS to exhibit high inhibition efficiency.
Pages: 2599-2605 | 381 Views 44 Downloads
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How to cite this article:
FK Ekuma, UI Ekanem, HO Chukwuemeka-Okorie. Computational investigations on corrosion inhibition potentials of schiff bases synthesized from linoleic and benheric acids on mild steel in HCl medium. Int J Chem Stud 2018;6(4):2599-2605.
