1-Ethyl 3-methylimidazolium thiocyanate ionic liquid as corrosion inhibitor of API 5L X52 steel in H2SO4 and HCl media

Corrales-Luna, Mónica; Manh, Tu Le; Romero-Romo, Mario; Palomar-Pardavé, M.; Arce-Estrada, E.M.

doi:10.1016/j.corsci.2019.03.041

Cited by 148 publications

(57 citation statements)

References 56 publications

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“…[7] Surfactants are a category of traditional and efficient inhibitors that attach to the metal surface by hydrophilic heads and establish a compact protective layer containing hydrophobic tails. [8][9][10][11][12][13] Many studies have confirmed that ionic liquids (ILs) containing imidazolium, [14] imidazolinium, [15] pyridinium, [16] morpholinium, [17] thiazolium, [18] phosphonium, [19] and ammonium [20] can attach to metal surfaces and form sites that inactivate corrosion reactions at the metal/electrolyte interface in acidic media. Imidazolium-based ionic liquid inhibitors are a special type of ionic liquid, which have been utilized to protect steel, [21] aluminum, [22] and copper [23] from acid corrosion.…”

Section: Introductionmentioning

confidence: 99%

“…In fact, many imidazolium-based ionic liquid inhibitors containing alkyl chains are both ILs and surfactants, and their performance at inhibiting metal corrosion in acid media depends on the length of alkyl chains, [24] substituents in the imidazole ring, [25] anions, [14] and whether they are Gemini surfactants [26,27] or polymers. [22] It is worth noting that the saturation adsorption concentration of surfactant inhibitors on metal surfaces is closely related to the critical micelle concentration (CMC), [28][29][30] which depends on the length of alkyl chains and the hydrophobic ability of surfactant molecular substituents.…”

Section: Introductionmentioning

confidence: 99%

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Comparative study on two imidazolium‐based ionic liquid surfactants as corrosion inhibitors for N80 steel in 15% hydrochloric acid solution

Qiao

Zeng

2020

Materials & Corrosion

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A comparative study on 1-dodecyl-2,3-dimethylimidazolium chloride ([DDMIM]Cl) and 1-benzyl-3-dodecyl-2-methylimidazol-1-ium chloride ([BDMIM]Cl) as corrosion inhibitors for N80 steel in a 15% hydrochloric acid solution was performed by surface tension tests, electrochemical measurements, weight loss, scanning electron microscopy, atomic force microscopy, and theoretical calculations. The experimental results confirm that [DDMIM]Cl and [BDMIM]Cl act as mixed-type inhibitors. The adsorption of both inhibitors on the N80 steel surface obeys the Langmuir adsorption isotherm, and [BDMIM]Cl exhibits better inhibitive performance, lower critical micelle concentration (CMC), and a lower ratio of saturation adsorption concentration on the steel surface to its own CMC than [DDMIM]Cl. The results of theoretical calculations reveal that the electron-donating/accepting capacities and hydrophobicity of the benzyl substituent in the imidazole ring are essential for preventing steel corrosion in acid media.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative study on two imidazolium‐based ionic liquid surfactants as corrosion inhibitors for N80 steel in 15% hydrochloric acid solution

Qiao

Zeng

2020

Materials & Corrosion

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“…The equivalent circuit consists of a solution resistance ( R s ), a charge-transfer resistance ( R ct ), and a constant phase element (CPE), whose inclusion was necessitated by the depressed character exhibited by the Nyquist graphs ( Figure 3 a,c). 22 , 25 − 27 The impedance function of the CPE can be expressed according to eq 1 ( 22 , 25 ) where Y 0 is a CPE constant, n is a CPE exponent, j is an imaginary number, and w is the angular frequency. Normally, the mathematical coefficient n lies in the range −1 ≤ n ≤ 1.…”

Section: Results and Discussionmentioning

confidence: 99%

Comparative Studies of the Corrosion Inhibition Efficacy of a Dicationic Monomer and Its Polymer against API X60 Steel Corrosion in Simulated Acidizing Fluid under Static and Hydrodynamic Conditions

et al. 2020

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N 1 , N 1 -diallyl- N 6 , N 6 , N 6 -tripropylhexane-1,6-diaminium chloride (NDTHDC) and its polymer poly( N 1 , N 1 -diallyl- N 6 , N 6 , N 6 -tripropylhexane-1,6-diaminium chloride) (poly-NDTHDC) were synthesized and tested against API X60 carbon steel corrosion in 15 wt % HCl solution. Weight loss, electrochemical, and surface analysis techniques were used. Results show that poly-NDTHDC is better than NDTHDC. Moreover, 1000 mg/L NDTHDC protected the studied surface by 79.1% at 25 °C, while 100 mg/L poly-NDTHDC afforded 86.1% protection. Inhibition efficiency increases with temperature (up to 60 °C) but depreciates thereafter. NDTHDC and poly-NDTHDC perform better under the hydrodynamic condition than the static condition. TGA and FTIR results reveal that poly-NDTHDC is chemically and thermally stable.

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“…A surface morphological study confirms that the surface of mild is shielded by an inhibitor which blocks the active site of corrosion of the metal. The adsorption of the inhibitor over the surface of mild steel tends to follow Langmuir adsorption isotherm and a high value of adsorption equilibrium (K ads ) shows that adsorption took place is strong and attractive [75][76][77][78]87]. From the DFT and Quantum chemical calculation, the mechanism of inhibition can be well understood.…”

Section: Resultsmentioning

confidence: 99%

“…Orbital) and LUMO (Lowest Unoccupied Molecular Orbital) [76][77][78]. The distribution of electron density structure i.e.…”

Section: Quantum Chemical Studiesmentioning

confidence: 99%

Experimental and computational studies of imidazolium based ionic liquid 1-methyl- 3-propylimidazolium iodide on mild steel corrosion in acidic solution

Parveen

Bashir

Thakur

et al. 2019

Mater. Res. Express

113

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Corrosion inhibitive property of ionic liquid 1-Methyl-3-propylimidazolium iodide (MPII) on Mild Steel in 1 M H 2 SO 4 was investigated by experimental and computational Studies. The inhibition efficiency of inhibitor MPII at various concentrations, temperature and time duration were studied by gravimetric measurements, potentiodynamic polarization techniques, electrochemical impedance spectroscopy (EIS), surface studies and computational studies. The results from potentiodynamic polarization studies revealed that inhibitor 1-Methyl-3-propylimidazolium iodide acts as a mixed type inhibitor with a high inhibition efficiency of 91% at 298 K. Adsorption of the inhibitor on the surface of mild steel follows the Langmuir adsorption isotherm. The mechanism of adsorption was also validated by quantum chemical studies. Morphology and topography of the Mild Steel surface with and without the inhibitor were investigated by SEM. Thermodynamic parameters for adsorption like adsorption equilibrium (K ads ), DH , ads DS , ads Free energy of adsorption i.e. ΔG ads were also calculated so as to project the mechanism of adsorption. Computational data obtained from the Density functional theory (DFT) were used to acquire detailed theoretical insights. Appreciably Electrochemical impedance spectroscopy, Molecular dynamic simulation and quantum chemical calculation confirms the interaction of inhibitor with metal which leads to increases in inhibition efficiency.

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1-Ethyl 3-methylimidazolium thiocyanate ionic liquid as corrosion inhibitor of API 5L X52 steel in H2SO4 and HCl media

Cited by 148 publications

References 56 publications

Comparative study on two imidazolium‐based ionic liquid surfactants as corrosion inhibitors for N80 steel in 15% hydrochloric acid solution

Comparative study on two imidazolium‐based ionic liquid surfactants as corrosion inhibitors for N80 steel in 15% hydrochloric acid solution

Comparative Studies of the Corrosion Inhibition Efficacy of a Dicationic Monomer and Its Polymer against API X60 Steel Corrosion in Simulated Acidizing Fluid under Static and Hydrodynamic Conditions

Experimental and computational studies of imidazolium based ionic liquid 1-methyl- 3-propylimidazolium iodide on mild steel corrosion in acidic solution

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