Adsorption and corrosion inhibitive properties of P(2-aminobenzothiazole) on mild steel in hydrochloric acid media

Rehim, Sayed S. Abd El; Sayyah, S. M.; El-Deeb, M. M.; Kamal, S. M.; Azooz, R. E.

doi:10.1007/s40090-015-0065-5

Cited by 77 publications

(22 citation statements)

References 44 publications

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“…Arrhenius equation is a useful model for evaluating the effect of temperature on the corrosion rate of mild steel and aluminium in HCl solution. The equation relates the corrosion rate (CR) with temperature as follows [19]:…”

Section: Effect Of Temperaturementioning

confidence: 99%

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Eddy

Ameh

Essien

2018

Journal of Taibah University for Science

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The effectiveness of 3-nitrobenzoic acid towards the inhibition of the corrosion of mild steel and aluminium in solution of HCl was investigated using theoretical and experimental methods (weight loss, thermometric, polarization, FTIR and SEM techniques). Inhibition efficiency of 3-nitrobenzoic acid, evaluated from weight loss technique ranged from 71% to 90% and from 71% to 82% for mild steel and aluminium, respectively. Results from linear polarization and potentiodynamic studies were comparable to weight loss results. Calculated kinetic (activation energy), thermodynamic (changes in entropy and enthalpy) and adsorption parameters indicated that the adsorption of the inhibitor on the surface of the respective metal is accompanied by molecular association and is endothermic, spontaneous and favoured the mechanism of physical adsorption. Best-fitted adsorption isotherms were Langmuir and Frumkin models, which gave evidences for the existence of interaction, characterized by attractive behaviour of the inhibitor on both mild steel and aluminium surfaces. Scanning electron micrographs of the metal before and after inhibition clearly revealed that the inhibitor prevented crevice and pitting corrosion by forming adsorbed protective layer on the respective metal surface. FTIR spectra of the inhibitor and the corrosion products indicated the formation of new bond, existence of interaction between the inhibitor molecules and the involvement of some functional groups in the adsorption and inhibition processes. Quantum chemical study revealed that the inhibitor is adsorbed on the metal surface through the nitro functional group in the ring. Calculated semi empirical parameters were comparable to those reported for excellent corrosion inhibitors.

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Section: Effect Of Temperaturementioning

confidence: 99%

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Eddy

Ameh

Essien

2018

Journal of Taibah University for Science

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“…BTThio and ClGaBTThioPc however have Frumkin adsorption parameter ( α ) values calculated from slopes of Frumkin plots as 1.6 M and 2.5 M, respectively. These intrinsic adsorption parameters are positive suggesting attractive lateral interactions of the adsorbed inhibitor molecules [31]. As was the case with adsorption data fitted to Freundlich and Temkin isotherms, the χ 2 value is smaller for ClGaBTThioPc compared to BTThio for Frumkin isotherm.…”

Section: Resultsmentioning

confidence: 99%

“…El-Awady, Freundlich, Frumkin, Langmuir and Temkin isotherm linear plots [5,30,31] are presented in Figure 4 for adsorption of the studied inhibitors on aluminum surface in 1.0 M hydrochloric acid solution (see supporting information for Equations (S2)–(S6)). Considering that adsorption of inhibitor molecules onto the metal surface is the first step in the mechanism of corrosion inhibition [32], it is important to understand the adsorption behavior of organic molecules (inhibitors) on the metal surface.…”

Section: Resultsmentioning

confidence: 99%

Corrosion Resistance of Aluminum against Acid Activation: Impact of Benzothiazole-Substituted Gallium Phthalocyanine

et al. 2019

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This study describes the adsorption behavior of organic inhibitors at the aluminum-HCl solution interface and their corrosion inhibition performance. The organic inhibitors employed are: 4-(benzo [d]thiazol-2ylthio)phthalonitrile (BTThio) and tetrakis[(benzo[d]thiazol-2-yl-thio)phthalo- cyaninato]gallium(III) chloride (ClGaBTThioPc). The corrosion behavior of these inhibitors is investigated using electrochemical and computational techniques. Open circuit potential results reveal predominant cathodic character for the mechanism of aluminum corrosion inhibition by the inhibitors. Inhibition efficiency values from potentiodynamic polarization measurements increase from 46.9 to 70.8% for BTThio and 59.7 to 81.0% for ClGaBTThioPc within the concentration range of 2 to 10 μM. Scanning electron microscopy (SEM) measurements reveal protection of the metal surface from acid attack, in the presence of the inhibitors and energy dispersive X-ray (EDX) measurements show that the most probable way by which the inhibitors protect the metal surface would be by shielding it from the corrosion attacks of Cl− from the acid. Quantum chemical parameters corroborate well with experimental findings.

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“…EIS is one of the best techniques for analyzing the properties of the metal-electrolyte interface relationship during the corrosion process. [25][26][27][28] Nyquist plots of aluminum in 2.0 mol/L H 2 SO 4 solution in the absence and presence of different concentrations of ortho-aniline derivatives at E OCP are performed over the frequency range of 100 kHz to 10 MHz. The data are graphically represented in case of 300 ppm in Fig.…”

Section: Impedance Measurementsmentioning

confidence: 99%

Effect ofortho-substituted aniline on the corrosion protection of aluminum in 2 mol/L H₂SO₄solution

2017

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Adsorption and corrosion inhibitive properties of P(2-aminobenzothiazole) on mild steel in hydrochloric acid media

Cited by 77 publications

References 44 publications

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Corrosion Resistance of Aluminum against Acid Activation: Impact of Benzothiazole-Substituted Gallium Phthalocyanine

Effect ofortho-substituted aniline on the corrosion protection of aluminum in 2 mol/L H₂SO₄solution

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Adsorption and corrosion inhibitive properties of P(2-aminobenzothiazole) on mild steel in hydrochloric acid media

Cited by 77 publications

References 44 publications

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Experimental and computational chemistry studies on the inhibition of aluminium and mild steel in 0.1 M HCl by 3-nitrobenzoic acid

Corrosion Resistance of Aluminum against Acid Activation: Impact of Benzothiazole-Substituted Gallium Phthalocyanine

Effect ofortho-substituted aniline on the corrosion protection of aluminum in 2 mol/L H2SO4solution

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Effect ofortho-substituted aniline on the corrosion protection of aluminum in 2 mol/L H₂SO₄solution