Gerengia, Hüsnü and Cakmak, Resit and Dag, Besir and Solomon, Moses M. (2020) Synthesis and anticorrosion studies of 4-[(2- nitroacetophenonylidene)-amino]- antipyrine on SAE 1012 carbon steel in 15 wt.% HCl solution. Journal of Adhesion Science and Technology, 34 (22).
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Abstract
A novel corrosion inhibitor, ((E)-1,5-dimethyl-4-((1-(3-nitrophenyl)ethylidene)amino)-2- phenyl-1,2-dihydro-3H-pyrazol-3-one) (DNPP) was synthesized in high yield by the condensation reaction of 4-aminoantipyrine with 2-nitroacetphenone derived from acetophenone as a starting material and characterized by FT-IR, 1H, and 13C NMR techniques. DNPP was tested against the corrosion of SAE 1012 carbon steel in 15 wt.% HCl solution using electrochemical and surface characterization techniques. Results obtained show that DNPP is effective in retarding the corrosion of SAE 1012 carbon steel. With 4 mM of DNPP, the charge transfer resistance of SAE 1012 in 15 wt.% HCl solution is raised from 17.42 to 140.50 Ω cm2 and the substrate surface is protected by 87%. The inhibition is through adsorption mechanism (mixed-adsorption type) and has been confirmed by SEM and EDAX results. Potentiodynamic polarization results reveal that DNPP acted as a mixed-type corrosion inhibitor. DNPP is a promising candidate for the formulation of an inhibitor cocktail for the strong acid environment.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 4-aminoantipyrine Schiff base Carbon steel Corrosion Corrosion inhibition |
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Chemistry |
| Depositing User: | nwokealisi |
| Date Deposited: | 14 Apr 2023 10:22 |
| Last Modified: | 14 Apr 2023 10:22 |
| URI: | http://eprints.covenantuniversity.edu.ng/id/eprint/16800 |
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