Synthesis, characterization and inhibition effect of new antipyrinyl derivatives on mild steel corrosion in acidic solution

El‐Haddad, Mahmoud N.; Elattar, Khaled M.

doi:10.1007/s40090-015-0037-9

Cited by 33 publications

(10 citation statements)

References 64 publications

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“…Additionally, it has been found that as (CS) concentrations increase, the impedance spectrum diameter increases. This indicates that the charge transfer mechanism has been inhibited and con rms that the extract successfully inhibits corrosion of HCS in acidic solutions .The (%E Eis ) and (θ) are obtained from the (R ct ) as the following equation [24]: 2…”

Section: Pdp Testmentioning

confidence: 93%

“…As can be seen, the shape of the impedance spectra is similar with and without the addition of (CS) extract, indicating that the nature of the corrosion reaction has not changed. However, the impedance spectra is not a perfect semicircle, which may be due to the frequency dispersion caused by the roughness and unevenness of the solid electrode surface [24]. Additionally, it has been found that as (CS) concentrations increase, the impedance spectrum diameter increases.…”

Section: Pdp Testmentioning

confidence: 99%

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Action of the Capparis Spinoza leaves extract as a green corrosion inhibitor for high carbon steel in acidic solution

Jahdaly

2023

Preprint

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Capparis Spinoza leaves extract (CS) was studied in HCl (0.5 mol/ L) solution as a green corrosion inhibitor for the HCS using the electrochemical measurements, as potentiodynamic polarization (PdP), and electrochemical impedance spectroscopy (Eis). The PdP plots showed a mixed role of the (CS) extract, and the Eis diagrams pointed that the charge transfer resistance (Rct) increased as the concentration of (CS) increased. Inhibition efficiency reached a maximum of ~ 97%. The corrosion inhibition of HCS in acidic medium showed a good fit to the Langmuir adsorption model. The thermodynamic parameter, as ΔGads was calculated and revealed that (CS) adsorbed onto HCS surface via both chemical and physical adsorption mode. HCS surface morphology was investigated using AFM technique, ultraviolet-visible spectrometry and confirmed that the formation of a protective thin film of (CS) on the metal surface. Quantum chemical calculations were determined and supported the experimental data.

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Section: Pdp Testmentioning

confidence: 93%

Section: Pdp Testmentioning

confidence: 99%

Action of the Capparis Spinoza leaves extract as a green corrosion inhibitor for high carbon steel in acidic solution

Jahdaly

2023

Preprint

View full text Add to dashboard Cite

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“…The energy gap Egap indicates the reactivity tendency of organics toward the metal surface [50]. Thus, Egap has been used to characterize the binding ability of organic compounds to the metal surface [51]. A good corrosion inhibitor behaves as a strong Lewis base, and the electronegativity value of inhibitors is an important parameter in terms of electron transfer between metal and inhibitor.…”

Section: Quantum Chemical Calculationsmentioning

confidence: 99%

Electrochemical and Theoretical Study of Pyrazole 4-(4,5-dihydro-1H-pyrazol-5-yl)-N,N-dimethylaniline (D) as a Corrosion Inhibitor for Mild Steel in 1 M HCl

Chadli

Elazouzi

Khelladi

et al. 2017

Port. Electrochim. Acta

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This work is devoted to examine the effectiveness of pyrazoles 4-(4,5-dihydro-1H-pyrazol-5-yl)-N,N-dimethylaniline (D) on corrosion of mild steel in a 1 M HCl solution, using weight loss measurement at concentration effects. The inhibitor (D) was synthesized in our laboratory. The formation of this pyrazole was carried out with hydrazine and α-unsaturated aldehydes, and the structure was checked by spectroscopic means, such as FT-IR, 1H NMR and 13C NMR. Polarization curves and electrochemical impedance spectroscopy (EIS) methods were used to assess both the corrosion rate and inhibition efficiency. Potentiodynamic polarization showed that D behaved as a mixed-type inhibitor. The Nyquist plots showed that, while D concentrations increased, charge-transfer resistance increased and double-layer capacitance decreased, involving increased inhibition efficiency. Adsorption of the inhibitor molecules corresponds to Langmuir adsorption isotherm. Quantum chemical calculations showed that the inhibitor was prone to be protonated in the acid, and the results were in full agreement with experimental observations.

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“…The adsorption of organic inhibitor molecules from the aqueous solution can be considered as a quasi-substitution process between the organic compounds in the aqueous phase [Org (sol) ] and water molecules associated with the metallic surface [H 2 O (ads) ] as represented by the following equilibrium [33,34]:…”

Section: Adsorption Isothermmentioning

confidence: 99%

Corrosion inhibition potentiality of some benzimidazole derivatives for mild steel in hydrochloric acid: Electrochemical and weight loss studies

Lgaz¹,

Salghi²,

Jodeh³

2016

Int. J. Corros. Scale Inhib.

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The adsorption and inhibition effects of three benzimidazole derivatives (BDD), namely: 2-(2-pyridyl)benzimidazole (PBD), 2-bromo-1H-benzimidazole (BrBD), and 2-chlorobenzimidazole (ClBD) on mild steel corrosion in 1 M HCl have been studied by electrochemical and weight loss methods. Results showed that inhibition efficiency increases with concentration and maximum value was obtained at 5·10 -3 M concentration. From the results, it is concluded that the BDD inhibited mild steel corrosion in 1 M HCl by adsorbing on the metal surface. Polarization results showed that the BDD act as mixed type inhibitors. The adsorption of BDD onto the mild steel surface was described by the Langmuir adsorption isotherm.

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Synthesis, characterization and inhibition effect of new antipyrinyl derivatives on mild steel corrosion in acidic solution

Cited by 33 publications

References 64 publications

Action of the Capparis Spinoza leaves extract as a green corrosion inhibitor for high carbon steel in acidic solution

Action of the Capparis Spinoza leaves extract as a green corrosion inhibitor for high carbon steel in acidic solution

Electrochemical and Theoretical Study of Pyrazole 4-(4,5-dihydro-1H-pyrazol-5-yl)-N,N-dimethylaniline (D) as a Corrosion Inhibitor for Mild Steel in 1 M HCl

Corrosion inhibition potentiality of some benzimidazole derivatives for mild steel in hydrochloric acid: Electrochemical and weight loss studies

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