Electrochemical and quantum chemical assessment of linoleic acid as a corrosion inhibitor for carbon steel in sulfuric acid solution

Hermoso-Diaz, I.A.; Foroozan, Amir; Ríos, Juan Pablo Flores-De los; Landeros-Martínez, Linda-Lucila; Porcayo-Calderón, J.

doi:10.1016/j.molstruc.2019.07.085

Cited by 20 publications

(6 citation statements)

References 57 publications

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“…11. Electronic parameters of PPA, POA and protonated linoleic acid (PLA) which was reported by Hermoso-Diaz [41] such as HOMO, LUMO, ΔE, dipole moment and reactivity parameters are show in Table 6. As can be seen from Table 6, the inhibition e ciency decreased in the order PPA > PLA > POA according to the HOMO values.…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 94%

“…The geometry optimization of palmitc acid (PA) and oleic acid (OA) were performed in both the neutral and protonated forms, followed by a frequency calculation was performed to make sure that the structure was in their lowest energy level. The results for linoleic acid has been reported previously [41]. In order to have a better correlation with experimental results obtained in aqueous solution and to understand dispersive, repulsive and electrostatic forces between solute and solvent molecules, the IEFPCM solvation method was employed [42,43].…”

Section: Quantum Chemical Calculationsmentioning

confidence: 95%

“…The optimized structures of neutral molecules of the neutral palmitic acid (NPA) and neutral oleic acid (NOA) are shown in Fig. 9; calculations performed for neutral linoleic acid (NLA) has been reported elsewhere [41]. In this gure, HOMO and LUMO orbitals are of great importance to describe the preferred sites for the inhibitors adsorption.…”

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

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Use of an Ammonium Quaternary Salt Obtained from Avocado as Corrosion Inhibitor of a Duplex Stainless Steel in CO 2 –Saturated NaCl Solution

Brito-Franco

Vázquez‐Vélez²,

Rios

et al. 2023

Preprint

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A cationic, Ammonium quaternary surfactant, obtained from avocado essential oil has been used as a corrosion inhibitor for LDX 2101 duplex stainless steel in a CO2-saturated 3.5% NaCl solution. Used techniques involved potentiodynamic polarization curves and electrochemical impedance spectroscopy. Results have shown that ammonium quaternary salt was an efficient mixed type of inhibitor although it affected more strongly the cathodic electrochemical reactions, with a decrease in the corrosion and current density and an increase in the pitting potential values; inhibitor had an efficiency that increased with its concentration from 0 to 25 ppm, but it decreased for higher concentrations. Inhibitor was adsorbed onto the steel surface on a mixed chemical-physical way dominated by a chemical type of adsorption, following a Langmuir type of adsorption isotherm. Corrosion process was charge transfer controlled and it was unaffected by the addition of the inhibitor. Theoretical studies in order to determine the relationship between electronic inhibitor properties and its inhibition efficiency have been carried out by using the DFT methodology.

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Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 94%

Section: Quantum Chemical Calculationsmentioning

confidence: 95%

Section: Electrochemical Impedance Spectroscopy (Eis)mentioning

confidence: 99%

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Use of an Ammonium Quaternary Salt Obtained from Avocado as Corrosion Inhibitor of a Duplex Stainless Steel in CO 2 –Saturated NaCl Solution

Brito-Franco

Vázquez‐Vélez²,

Rios

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Every year, a large amount of carbon steel equipment is damaged and replaced owing to metal corrosion, causing enormous economic losses and huge potential safety risks [13]. The most widely applied method for removing scale during facility maintenance activities is pickling [14,15]. Sulfuric acid is one of the most commonly used pickling agents, as it can effectively remove dirt and oxidation products from the metal surface [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…The most widely applied method for removing scale during facility maintenance activities is pickling [14,15]. Sulfuric acid is one of the most commonly used pickling agents, as it can effectively remove dirt and oxidation products from the metal surface [15][16][17]. However, the corrosion rate of carbon steel is so high in acidic conditions that the equipment may be damaged during the acidic cleaning process.…”

Section: Introductionmentioning

confidence: 99%

Cucumber (Cucumis sativus L.) Leaf Extract as a Green Corrosion Inhibitor for Carbon Steel in Acidic Solution: Electrochemical, Functional and Molecular Analysis

et al. 2022

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An extract of cucumber leaves (ECSL) was prepared as a green corrosion inhibitor for carbon steel. Its carbon steel corrosion inhibition performance against 0.5 mol L−1 H2SO4 was investigated using electrochemical methods and scanning electron microscopy (SEM). Its composition was analyzed by gas chromatography and mass spectroscopy (GC−MS). Quantum chemical calculations and molecular dynamics simulations (MDS) were conducted to elucidate the adsorption mechanism of the inhibitor molecules on the carbon steel surface. The results indicated that the inhibition efficiency increases with its increasing concentration. The extract acted as a mixed type corrosion inhibitor, and its inhibition properties were ascribed to the geometric coverage effect induced by its adsorption on the metal surface in accordance with Langmuir’s law. The active components in the extract were identified as mainly organic compounds with functional groups such as aromatic moieties and heteroatoms. The inhibition activities of ECSL are delivered through the ability of the active components to adsorb on the metal surface through their functional groups to form a protective layer which hinders the contact of aggressive substances with carbon steel and thus suppresses its corrosion. This research provides an important reference for the design of green corrosion inhibitors based on plant waste materials.

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Use of Avocado to Obtain an Ammonium Quaternary Salt as CO2-Corrosion Inhibitor of a Duplex Stainless Steel

et al. 2023

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Electrochemical and quantum chemical assessment of linoleic acid as a corrosion inhibitor for carbon steel in sulfuric acid solution

Cited by 20 publications

References 57 publications

Use of an Ammonium Quaternary Salt Obtained from Avocado as Corrosion Inhibitor of a Duplex Stainless Steel in CO 2 –Saturated NaCl Solution

Use of an Ammonium Quaternary Salt Obtained from Avocado as Corrosion Inhibitor of a Duplex Stainless Steel in CO 2 –Saturated NaCl Solution

Cucumber (Cucumis sativus L.) Leaf Extract as a Green Corrosion Inhibitor for Carbon Steel in Acidic Solution: Electrochemical, Functional and Molecular Analysis

Use of Avocado to Obtain an Ammonium Quaternary Salt as CO2-Corrosion Inhibitor of a Duplex Stainless Steel

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