A new schiff base derivative as an effective corrosion inhibitor for mild steel in acidic media: Experimental and computer simulations studies

Messali, Mouslim; Larouj, M.; Lgaz, Hassane; Rezki, Nadjet; Al-blewi, Fawzia Faleh; Aouad, Mohamed Reda; Chaouiki, Abdelkarim; Salghi, R.

doi:10.1016/j.molstruc.2018.05.018

Cited by 106 publications

(20 citation statements)

References 47 publications

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“…Messali et al [33] studied the inhibition effect and adsorption behavior of 4-((2,3-dichlorobenzylidene)amino)-3-methyl-1H-,2,4-triazole-5(4H)-thione on mild steel in 1 M HCl solution. The inhibitor can be adsorbed onto surface by both physical and chemical means obeys Langmuir adsorption isotherm.…”

Section: Effect Of Inhibitor Concentration and Adsorption Isothermmentioning

confidence: 99%

Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid

2019

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The corrosion inhibition of mild steel in 0.5 M hydrochloric acid by six synthesized heterocyclic compounds was studied using weight loss measurements. The inhibition efficiency exceeded 95%. The excellent inhibitor performance was attributed to the formation of protection adsorption films on the steel surface. The structures of compounds were confirmed by Fourier transform infrared and nuclear magnetic resonance analysis. The adsorption of inhibitor on steel surface followed the Langmuir adsorption isotherm. Quantum chemical calculations were also adopted to clarify the inhibition mechanism.

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Section: Effect Of Inhibitor Concentration and Adsorption Isothermmentioning

confidence: 99%

Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid

2019

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“…Corrosion inhibition capability of organic molecules on SS is largely based on its physical and chemical properties. Out of various organic compounds, Schiff bases stays foremost on preventing SS corrosion in acidic solution, because of its simple way of synthesis from comparably cheap reagents and their less toxic nature . Inhibitory performance of these compounds can be altered by different heteroatoms (S, N & O) along with the azomethine group .…”

Section: Introductionmentioning

confidence: 99%

Schiff Bases of 2,5‐Thiophenedicarboxaldehyde as Corrosion Inhibitor for Stainless Steel under Acidic Medium: Experimental, Quantum Chemical and Surface Studies

Vikneshvaran

Velmathi

2019

ChemistrySelect

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Corrosion of stainless steel (SS) under acidic medium were studied with and without the presence of N',N'''-(thiophene-2,5-diylbis(methanylylidene))di(isonicotinohydrazide) (SS1) and 2,2'-(thiophene-2,5-diylbis(methanylylidene))bis(N-phenylhydrazinecarbo thioamide) (SS2). Different techniques like weight loss, potentiodynamic polarization, Electrochemical Impedance Spectroscopy (EIS), Scanning Electron Microscopy (SEM), Fourier Transform Infrared spectroscopy (FT-IR) and Atomic Force Microscopy (AFM) were employed to demonstrate the corrosion inhibitive behaviour of studied Schiff bases. Results of all the experiments proved that SS2 functions as more convincing inhibitor than SS1 under the studied condition. Corrosion inhibition performance of Schiff base with more sulphur atoms (SS2) against corrosion of SS under acidic medium is comparatively high. Theoretical analysis was further implemented to derive various molecular parameters of the Schiff bases. Energy values of molecular orbitals such as E HOMO , E LUMO and ΔE etc. have provided helpful information regarding electron transfer during adsorption of Schiff bases on stainless steel surface.

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“…Chaouiki et al [12] studied the synthetic organic compounds, i.e., 4-(isopentylamino)-3-nitrobenzonitrile and 3-amino-4-(isopentylamino)benzonitrile for corrosion inhibition of mild steel in a 1.0 M HCl solution and reported that 4-(isopentylamino)-3-nitrobenzonitrile resulted in improvements to inhibition efficiency. Other synthetic organics, such as 1-hydroxyethyl-3-methylimidazolium hexafluorophosphate and 1-hydroxyethyl-3-methylimidazolium bis-(trifluoromethylsulfonyl)imide [13], clopidogrel [14], p-vinyl benzene sulfonate and vinyl sulfonate-functionalized polyvinyl alcohol [15], 4-mercaptopyridine-modified sodium dodecyl sulfate [16], 1H-perimidine and 1H-perimidin-2-amine [17], tetrazole derivatives [18], 4-((2,3dichlorobenzylidene)amino)-3-methyl-1H-1,2,4-triazole-5(4H)-thione [19], 5-aminopyrazole carbonitriles [20], 2-(1-piperidyl)ethyl 3-methyl-4-oxo-2-phenylchromene-8-carboxylate [21], and 1-(2-ami-noethyl)-1-dodecyl-2-(trifluoromethyl)-4,5-dihydro-1H-imidazol-1-ium chloride [22] have been investigated as corrosion inhibitors for the protection of mild steel in HCl, H 2 SO 4 , and phosphoric acid solution at room temperature. e results confirmed that the compounds reported an inhibition efficiency in the range of 57.1-81.4% [15], 97.0-98.6% [16], 34.6-92.3% [17], 71.1-94.2% [19], 56.8-95.5% [20], 91.2-97.9% [21], and 80.6-99.2% [22].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibition Mechanism of Mild Steel by Amylose-Acetate/Carboxymethyl Chitosan Composites in Acidic Media

Erna

Herdini

Futra

2019

International Journal of Chemical Engineering

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This article details an investigation on the mechanism of corrosion inhibition of mild steel using amylose-acetate-blended carboxymethyl chitosan (AA-CMCh) in acidic media in the context of kinetic and thermodynamic parameters. The surface of mild steel was exposed to test solutions and evaluated using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The activation energy (Ea), free energy of adsorption (ΔG), enthalpy of activation (ΔHads), and entropy of activation (ΔSads) were determined in order to elucidate the mechanism of corrosion inhibition. The results confirmed that AA could be improved using CMCh as a corrosion inhibitor. The corrosion rate decreased from 1109.00 to 229.70 mdd (79.29%), while corrosion inhibition increased from 35.13 to 89.72%. Sulfate acid (H2SO4) of 0.25 M also helped in decreasing the corrosion rate from 2664.4 to 1041.67 mdd (60.9%) while also in increasing corrosion inhibition from 56.94 to 68.31%. The calculated values for ΔG, ΔHads, and ΔSads were −33.22 kJ·mol−1, −48.56 kJ·mol−1, and 0.0495 kJ·mol−1·K−1, respectively. The mechanism of corrosion inhibition of mild steel in the acidic condition is dominated and precipitated by the formation of the Fe-chelate compound, which was confirmed by the SEM/EDS spectrum. The reactions were spontaneous, exothermic, and irregular and takes place on the surface of mild steel.

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A new schiff base derivative as an effective corrosion inhibitor for mild steel in acidic media: Experimental and computer simulations studies

Cited by 106 publications

References 47 publications

Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid

Synthesis and investigations of heterocyclic compounds as corrosion inhibitors for mild steel in hydrochloric acid

Schiff Bases of 2,5‐Thiophenedicarboxaldehyde as Corrosion Inhibitor for Stainless Steel under Acidic Medium: Experimental, Quantum Chemical and Surface Studies

Corrosion Inhibition Mechanism of Mild Steel by Amylose-Acetate/Carboxymethyl Chitosan Composites in Acidic Media

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