The anticorrosion of surfactants toward L245 steel in acid corrosion solution: Experimental and theoretical calculation

Han, Peng; Zhang, Buyun; Chang, Zhixuan; Fan, Jiawei; Du, Fei; Xu, Chen; Liu, Ruiping; Fan, Lei

doi:10.1016/j.molliq.2021.118044

Cited by 12 publications

(2 citation statements)

References 63 publications

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“…Some electrochemical parameters were extracted from Fig. 7 such as E corr (corrosion potential), β c (cathodic slope), β a (anodic slope), i corr (corrosion current density), and η (inhibition efficiency) listed in Table 3 The values of η were calculated from equation: where i corr.blank and i corr.inh are the corrosion current densities of free acid solution and CS4 respectively 47 . Cathodic reaction (H 2 evolution) and anodic reaction were reduced after CS4 addition to acidic media confirming the inhibition effect of CS4 16 .…”

Section: Resultsmentioning

confidence: 99%

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Theoretical and electrochemical evaluation of tetra-cationic surfactant as corrosion inhibitor for carbon steel in 1 M HCl

Elaraby

El-samad

Khamis

et al. 2023

Sci Rep

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Recently, scientist study the role of surfactants for carbon steel corrosion protection. In the present study, newly tetra-cationic surfactant (CS4: 1,N1'-(ethane–1,2-diyl) bis (N1, N2—didodecyl–N2–(2- (((E)-3-hydroxy-4-methoxy-benzylidene)amino)ethyl)ethane-1,2-diaminium) chloride) based on Schiff-base compound(5,5'-((1E,17E)-2,5,8,11,14,17-hexaazaoctadeca-1,17-diene-1,18-diyl)bis(2-methoxyphenol) was synthesised, purified and characterized using FTIR and 1HNMR spectroscopy. The synthesized Tetra-cationic surfactant (CS4) was evaluated as anti-corrosion for carbon steel (CS-metal) in aggressive 1 M HCl using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization techniques (PDP). CS4 compound had a good surface-active property by reducing the surface tension as a result to the hydrophobic chains role. The prepared CS4 behaved as hybrid inhibitor (mixed-type) by blocking the anodic and cathodic sites. CS4 exhibited good inhibition efficiency reached 95.69%. The surface morphology of CS-metal was studied using scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS)confirming the anti-corrosive effect of CS4 compound returned into the adsorption process of CS4 molecules over CS-metal which obeyed Langmuir adsorption isotherm. The inhibitive effect of CS4 was supported by theoretical quantum chemical studies using the density functional theory (DFT), Monte Carlo (MC) and Molecular Dynamic (MD) simulation.

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Section: Resultsmentioning

confidence: 99%

“…where i corr.blank and i corr.inh are the corrosion current densities of free acid solution and CS4 respectively 47 . Cathodic reaction (H 2 evolution) and anodic reaction were reduced after CS4 addition to acidic media confirming the inhibition effect of CS4 16 .…”

Section: Electrochemical Corrosion Tests Electrochemical Impedance Sp...mentioning

confidence: 99%