Experimental and Theoretical Studies of the Corrosion Inhibition of 4-amino-2-(4-chlorophenyl)-8-(2, 3-dimethoxyphenyl)-6-oxo-2, 6-dihydropyrimido [2, 1-b][1, 3] thiazine-3,7-dicarbonitrile on Carbon Steel in a 1.0 M HCl Solution

Serrar, H.; Larouj, M.; Gaz, H L; Benzekri, Zakaria; Zarguil, A.; Essebaai, Hanane; Boukhris, Saı̈d; Oudda, H.; Salghi, R.; Hassikou, Amina; Souizi, Abdelaziz

doi:10.4152/pea.201801035

Cited by 7 publications

(3 citation statements)

References 44 publications

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“…It can be noticed that those values varied with different inhibitor concentrations, which indicates changes in the inhibition mechanism. This means that the prepared inhibitors acted by simple blocking the reactions [32][33].…”

Section: Anti-bacterial Activitymentioning

confidence: 99%

Ziziphus Spina Christi Leaves Methanol Extract Evaluation as Antifungal, Antibacterial, Antioxidant and Green Inhibitor for Carbon Steel Alloy Corrosion in Hydrochloric Acid

Al-Ashoor¹,

Ali²,

Al-Sawaad³

2023

Port. Electrochim. Acta

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In this study, Zs-c leaves were extracted by a 70% CH3OH solvent. The extract was investigated as green corrosion inhibitor for CS C1010 alloy in 0.1 M HCl. The study was done with different inhibitor concentrations (1, 2, 8 and 9 ppm). The extract showed the highest IE of 96.06%, at 9 ppm. The inhibitor adsorption on the CS alloy surface was found to obey the Langmuir's adsorption isotherm model. Kads, ΔHads, ΔSads and ΔGads were also calculated. The temperature effect on Zs-c leaves extract IE%, with the optimal concentration of 9 ppm, was studied at 35,45 and 55 ºC. The results showed that IE% decreased with raising solution temperatures. In addition, 𝐸 * , ΔH, ΔS and ΔG kinetic parameters were calculated. On the other hand, phytochemical tests and quantitative analysis, such as TPC and TFC, were also carried out. In addition, the anti-bacterial activity or growth inhibition of bacterial strains, such as Ec and Sa, were studied. Antifungal activity or growth inhibition studies of Ca and An species were also carried out, at a 100 mg/mL concentration. Anti-oxidant activity was also investigated by DPPH, at concentrations of 100, 250, 500, 750 and 1000 µg/mL, and good results were obtained.

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Section: Anti-bacterial Activitymentioning

confidence: 99%

Ziziphus Spina Christi Leaves Methanol Extract Evaluation as Antifungal, Antibacterial, Antioxidant and Green Inhibitor for Carbon Steel Alloy Corrosion in Hydrochloric Acid

Al-Ashoor¹,

Ali²,

Al-Sawaad³

2023

Port. Electrochim. Acta

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“…The β a values change with addition of inhibitors, which is attributed to that the prepared inhibitors are first adsorbed on the alloy surface and impede the passage of metal ions from the oxide-free metal surface into the solution by blocking the reaction sites on the metal surface affecting the anodic reaction mechanism. This indicates that the inhibitors prepared in this study are mixed types inhibitors [31,32].…”

Section: Polarization Studies (Tafel Plot)mentioning

confidence: 99%

Synthesis, characterization and evaluation of some graphene oxide derivatives and their application as corrosion inhibitors for carbon steel alloy type C1025 in hydrochloric acid

2019

Int. J. Corros. Scale Inhib.

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In this work, graphene oxide was modified first by a reaction with sulfanilic acid and second, by a reaction with sulfamic acid. The prepared compounds were characterized by XRD, Raman shift, FESEM and EDS techniques. GO functionalized sulfanilic acid (GOC) and GO functionalized sulfamic acid (GOD) were evaluated as anticorrosion inhibitors for carbon steel alloy (C1025) in acidic 0.1 M HCl environment at 298 K by the electrochemical method (Tafel plot method). The data reveals that the efficiencies of GO, GOC and GOD are 77.4%, 90.2% and 92% respectively at optimal concentrations of 100, 50 and 70 ppm, respectively. The effect of temperature on the corrosion reaction was studied and the results show that increasing the temperature in the range of 298, 308, 318 and 328 K decreased the efficiency. Furthermore, the thermodynamic and kinetic parameters such as the activation energy (E a ), enthalpy of activation (∆H*), Gibbs free energy of activation (∆G*) and entropy of activation (∆S*) were studied. The results indicate that the prepared inhibitors obey the Langmuir adsorption isotherm with R 2 near unity. The equilibrium constant K ads , Gibbs free energy of adsorption 0 ads

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“…of inhibitor concentrations using the Equation 3 has been calculated, where is a frequency at the impedance maximum and is a charge transfer resistance (Serrar et al, 2018).…”

Section: Double Layer Capacitancementioning

confidence: 99%

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

2019

University of Thi-Qar Journal of Science

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To inhibit corrosion of the AISI 4130 steel in 1M H 2 SO 4 solution at different temperatures, the gemini surfactant was used, namely N,N'-((1,4-phenylenebis(azanediyl)) bis (2-hydroxy propane-3,1-diyl)) bis (N,Ndimethyldecan-1-aminium) (PAPM). The gemini surfactant by electrochemical impedance spectroscopy technique and weight loss method has been evaluated at different temperatures 30, 40 and 50°C. The gemini surfactant showed a very good performance as a corrosion inhibitor in acidic solution, and inhibition efficiency increases with increase inhibitor concentration but decreased with increasing temperatures. Impedance technique results shown, that studied molecule act as mixed-type inhibitor toward AISI steel, also values of standard free energy of adsorption suggest the physisorption and chemisorption were occurred for inhibitor molecules on AISI surface. In addition, the inhibitor adsorption behavior on the AISI surface was investigated at specified temperatures and it coincide with Langmuir's adsorption isotherm. Furthermore, time effect on corrosion inhibition efficiency was studied where results shown that influence was slight. From quantum calculations, the inhibitor act as soft molecule were noted, also it was shown that the inhibitor more responding for reacting with the AISI surface and prefer the electrophilic attack because it contains on a nucleophilic centers. Experimental inhibition efficiency obtained from both two methods are on a good agreement to each other where optimum efficiency reached 90.32% for weight loss method and 87.17% for EIS technique. On other hand, theoretical inhibition efficiency and experimental inhibition efficiency were in a good agreement to each other, where as theoretical efficiency reached 92.35%.

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Experimental and Theoretical Studies of the Corrosion Inhibition of 4-amino-2-(4-chlorophenyl)-8-(2, 3-dimethoxyphenyl)-6-oxo-2, 6-dihydropyrimido [2, 1-b][1, 3] thiazine-3,7-dicarbonitrile on Carbon Steel in a 1.0 M HCl Solution

Cited by 7 publications

References 44 publications

Ziziphus Spina Christi Leaves Methanol Extract Evaluation as Antifungal, Antibacterial, Antioxidant and Green Inhibitor for Carbon Steel Alloy Corrosion in Hydrochloric Acid

Ziziphus Spina Christi Leaves Methanol Extract Evaluation as Antifungal, Antibacterial, Antioxidant and Green Inhibitor for Carbon Steel Alloy Corrosion in Hydrochloric Acid

Synthesis, characterization and evaluation of some graphene oxide derivatives and their application as corrosion inhibitors for carbon steel alloy type C1025 in hydrochloric acid

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

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