Adsorption and Corrosion Inhibition Effect of 1,1′-Thiocarbonyldiimidazole on Mild Steel in H2SO4 Solution and Synergistic Effect of Iodide Ion

Solmaz, Ramazan; Mert, Mehmet; Kardaş, Gülfeza; Yazıcı, Birgül; Erbil, M.

doi:10.1016/s1872-1508(08)60053-4

Cited by 93 publications

(47 citation statements)

References 22 publications

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“…The relative speed and effectiveness of the gasometric techniques as well as their suitability for in situ monitoring, any perturbation by an inhibitor with respect to gas evolution in metal/solution system have been established in the literature [82,83]. The protonated Schiff base molecules are also adsorbed at cathodic sites of metal in competition with hydrogen ions according to Eq.…”

Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

Inhibitive properties, thermodynamic, kinetics and quantum chemical calculations of polydentate Schiff base compounds as corrosion inhibitors for iron in acidic and alkaline media

Madkour

Elroby²

2015

Int J Ind Chem

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Quantum chemical calculations based on the density functional theory (DFT) method were performed on five polydentate Schiff base compounds (PSCs), act as corrosion inhibitors for iron in aerated 2.0 M HNO 3 and 2.0 M NaOH, aiming to analyze the characteristics of the inhibitor/surface mechanism as well as to analyze the experimental data and to describe the structural nature of the inhibitor on the corrosion process. The relationship between molecular structure of PSC and their inhibition efficiencies was discussed. The inhibition effect has been investigated using weight loss, thermometric, potentiodynamic polarization measurements and quantum chemical study. Among the compounds studied, 4-(2-hydroxynaphthylideneamino) antipyrine (PSC_1) exhibited the best inhibition efficiency IE (%) 78.4 % at 10 -4 M at 303 K. The high IE of (PSCs) was attributed to the blocking of active sites by adsorption of inhibitor molecules on the iron surface. Adsorption of (PSCs) inhibitors is spontaneous, exothermic, obeyed Temkin isotherm and is regarded as physiochemical mechanism. Polarization measurements indicate that all the examined Schiff bases are of mixedtype inhibitor in HNO 3 ; causing only inhibition of the cathode process in NaOH. The results showed that the inhibition efficiency of PSCs increased with the increase in E HOMO and decrease in E LUMO -E HOMO ; and the areas containing N and O atoms are most possible sites for bonding the metal iron surface by donating electrons to the metal.

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Section: Mechanism Of Corrosion Inhibitionmentioning

confidence: 99%

Inhibitive properties, thermodynamic, kinetics and quantum chemical calculations of polydentate Schiff base compounds as corrosion inhibitors for iron in acidic and alkaline media

Madkour

Elroby²

2015

Int J Ind Chem

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“…Some authors [47,48] have pointed out that adsorption on corroding surfaces never reaches the real equilibrium and tends to an adsorption steady state. However, when the corrosion rate is sufficiently small, the adsorption steady has a tendency to become a quasi-equilibrium state.…”

Section: Adsorption Considerationsmentioning

confidence: 99%

Inhibitive effect by extract of Mentha rotundifolia leaves on the corrosion of steel in 1 M HCl solution

et al. 2013

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An extract of Mentha rotundifolia leaves (EMRL) was tested as a corrosion inhibitor of steel in 1 M HCl using electrochemical impedance spectroscopy, Tafel polarization methods, and weight loss measurements. The inhibition efficiency of the extract of Mentha rotundifolia leaves was calculated and compared. We note good agreement between these methods. The results obtained revealed that the inhibitor tested differently reduced the kinetics of the corrosion process of steel. Its efficiency increases with the concentration and attained 92.87 % at 35 %. The effect of temperature on the corrosion behavior of steel in 1 M HCl was also studied in the range 298 and 338 K. The thermodynamic data of activation were determined. Mentha rotundifolia extract is adsorbed on the steel surface according to a Langmuir adsorption model.

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“…The surface charge of the metal is determined from the open circuit potential with respect to the PZC [27]. The dependency of the double layer capacitance on the applied dc potential is shown in the Fig.…”

Section: Potential Of Zero Chargementioning

confidence: 99%

“…In the presence of the inhibitor, the metal surface is positively charged with respect to PZC [27][28][29], hence chloride ions will first get adsorbed in the metal surface after that the protonated inhibitor molecules will be adsorbed and the metal ion dissolution will be effectively protected [30]. In the uninhibited HCl solution, the mechanism of anodic dissolution involves the reversible adsorption of the anion Cl -on steel surface, release of electrons from the anions adsorbed onto the metal surface and desorption of adsorbed species with Fe +2 ions after picking up elec- trons from the steel surface [27,29].…”

Section: Potential Of Zero Chargementioning

confidence: 99%

“…In the uninhibited HCl solution, the mechanism of anodic dissolution involves the reversible adsorption of the anion Cl -on steel surface, release of electrons from the anions adsorbed onto the metal surface and desorption of adsorbed species with Fe +2 ions after picking up elec- trons from the steel surface [27,29]. The inhibitor molecules existing in the protonated form through the heteroatoms N or O in HCl solution are in equilibrium with the corresponding molecular (unprotonated) form.…”

Section: Potential Of Zero Chargementioning

confidence: 99%

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Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

Danaee

Bahramipanah

Moradi

et al. 2016

Journal of Electrochemical Science and Technology

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The inhibition ability of N,N-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine (DHBP) as a schiff base against the corrosion of API-5L-X65 steel in 1 M HCl solution was evaluated by electrochemical impedance spectroscopy, potentiodynamic polarization and scanning electron microscopy. Electrochemical impedance studies indicated that DHBP inhibited corrosion by blocking the active corrosion sites. The inhibition efficiency increased with increasing inhibitor concentrations. EIS data was analysed to equivalent circuit model and showed that the charge transfer resistance of steel increased with increasing inhibitor concentration whilst the double layer capacitance decreased. The adsorption of this compound obeyed the Langmuir adsorption isotherm. Gibbs free energy of adsorption was calculated and indicated that adsorption occurred through physical and spontaneous process. The corrosion inhibition mechanism was studied by potential of zero charge. Polarization studies indicated that DHBP retards both the cathodic and anodic reactions through adsorption on steel surface. Scanning electron microscopy was used to study the steel surface with and without inhibitor.

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Adsorption and Corrosion Inhibition Effect of 1,1′-Thiocarbonyldiimidazole on Mild Steel in H2SO4 Solution and Synergistic Effect of Iodide Ion

Cited by 93 publications

References 22 publications

Inhibitive properties, thermodynamic, kinetics and quantum chemical calculations of polydentate Schiff base compounds as corrosion inhibitors for iron in acidic and alkaline media

Inhibitive properties, thermodynamic, kinetics and quantum chemical calculations of polydentate Schiff base compounds as corrosion inhibitors for iron in acidic and alkaline media

Inhibitive effect by extract of Mentha rotundifolia leaves on the corrosion of steel in 1 M HCl solution

Impedance Spectroscopy Studies on Corrosion Inhibition Behavior of Synthesized N,N’-bis(2,4-dihydroxyhydroxybenzaldehyde)-1,3-Propandiimine for API-5L-X65 Steel in HCl Solution

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