Alkylimidazolium Bromides as Corrosion Inhibitors for Mild Steel in Acidic Medium

Langová, Šárka; Pánek, Petr; Fojtášková, Jana; Vicherková, Šárka

doi:10.1007/s12666-017-1272-x

Cited by 16 publications

(4 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values about -20 kJ mol -1 indicate electrostatic interaction and those around -40 kJ mol -1 chemisorption process. 27,28 A strong dependence of the inhibition efficiency on the alkyl chain length was found in our previous work 29 on 1-alkyl-3-methylimidazolium bromides for the shorter chain length, beaking the trend for the largest 1-dodecyl-3-methylimidazolium bromide. 30 The aim of this study is to compare the results for 1-octyl-3-methylimidazolium salts with various anions.…”

Section: Introductionmentioning

confidence: 56%

See 1 more Smart Citation

Inhibition of steel corrosion with imidazolium-based compounds -- experimental and theoretical study

Legut,

Kądzielawa,

Pánek

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

The aim of this work is to investigate the corrosion inhibition of the mild steel in the 1 M HCl solution by the 1-octyl-3-methylimidazolium hydrogensulphate, 1-butyl-3-methylimidazolium hydrogensulphate, and 1-octyl-3-methylimidazolium chloride, using electrochemical, weight loss, and surface analysis methods as well as the full quantum-mechanical treatment. Polarization measurements prove that studied compounds are mixed-type inhibitors with predominantly anodic reaction. The inhibition efficiency obtained from the polarization curves is about 80-92% for all of the 1-octyl-3-methylimidazolium salts with the concentration higher than 0.005 mol dm -3 , while it is much lower for 1-butyl-3-methylimidazolium hydrogensulphate. The values measured in the weight loss experiments (after seven days) are to some extent higher (reaching up to 98% efficiency). We have shown that the influence of the alkyl chain length on the inhibition efficiency is much larger than that of the anion type. Furthermore, we obtain a realistic model of a single molecule on iron surface Fe(110) by applying the Density Functional Theory calculations. We use the state-of-the-art computational approach, including the meta-GGA strongly-constrained and appropriately normed semilocal density functional to model the electronic structure properties of both free and bounded-to-surface molecules of 1-butyl-, 1-hexyl-, and 1-octyl-3-methylimizadolium bromide, chloride, and hydrogensulphate. From our calculations we extract the HOMO/LUMO gap, hardness, electronegativity, and charge transfer of electrons from/to molecules-in-question. It supports the experimental findings and explains the infuence of the alkyl chain length and the functional group on the inhibition process.

show abstract

Section: Introductionmentioning

confidence: 56%

“…The inhibition efficiency of both ionic liquids is about 90% for the concentration 0.001 M and higher in 1M HCl solutions. The results were compared with those obtained for 1-octyl-3methylimidazolium bromide 29 . The differences between 1-octyl-3-methylimidazolium salts were not significant.…”

Section: Discussionmentioning

confidence: 99%

Inhibition of steel corrosion with imidazolium-based compounds -- experimental and theoretical study

Legut,

Kądzielawa,

Pánek

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…56 The extent of the interactions of the inhibitor molecules adsorbed on Fe (1 1 0) surface could be demonstrated by the interaction (E Adsorption ) and binding (E binding ) energies followed the Eqs. 14 wherein, E Adsorption was the interaction energy of the molecules with the Fe surface, E binding showed the binding energies of the adsorbed inhibitors that were approximated as the simulation system reached the equilibrium states, E Total was the total whole of the simulation box, + E Surface Solution represented the total energy of system without any organic inhibitors, + E s Inhibitor olution showed the total energy of system without Fe slab, and E Solution was the energy of aggressive acid medium.…”

Section: Resultsmentioning

confidence: 99%

“…[11][12][13] Tan et al have found that 1-methyl-3alkylimidazolyl derivatives displayed good corrosion inhibition effect on light steel by varying the alkyl chain in 1.0 M HCl solution. 14 Inspired by these efforts, the more and more studies have used quinolones as corrosion inhibitors. [15][16][17] It is noted that norfloxacin is a common clinical medicine to human and animals.…”

mentioning

confidence: 99%

Norfloxacin Skeleton-Included Dendritic Molecules as Corrosion Inhibitors on Mild Steel in Hydrochloric Acid: From Experiments to Molecular Dynamics Simulation

Chen¹,

Shi²,

Xu³

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

In order to develop organic compounds for achieving highly efficient anticorrosion of mild steel in HCl solution, this study proposed to synthesize new dendritic molecules (DMs 1, 2) containing double norfloxacin skeletons. In addition, the linear molecule (LM) carrying a single norfloxacin framework was also prepared as a reference. The chemical structures of the studied molecules were fully characterized by nuclear magnetic resonance spectroscopy (NMR) (1D and 2D NMR spectroscopy, 1H, 13C, 19F), mass spectroscopy, Fourier-transform infrared spectroscopy. For this purpose, the adsorption of the studied molecules on mild steel was investigated by different means. Furthermore, the potential kinetic polarization and electrochemical impedance spectroscopy were used to survey the anticorrosion of the studied molecules in HCl solution at 298 K. It is shown that the DMs displayed superior corrosion inhibition effect on mild steel over the LM in acid medium at 298 K (the maximal corrosion inhibition efficiency, LM, 87.80%, DM1, 96.00%, DM2, 96.26% at 0.015 mM). The anticorrosion and adsorption mechanisms of the studied molecules for mild steel were further understood by material simulation and adsorption isotherms.

show abstract

Aqueous Black Seed (Nigella sativa L.) Extract-Mediated Corrosion Inhibition in Mild Steel Exposed to 3.5% NaCl: Effect of Temperature, pH, Time, and In Situ Analysis Using Atomic Force Microscopy

Jayakumar,

Jouhar,

Khan

et al. 2024

Trans Indian Inst Met

View full text Add to dashboard Cite

Atomic force microscopy (AFM)-based analysis on the corrosion inhibition properties of aqueous black seed extract for mild steel exposed to 3.5% NaCl solution is reported here. At ~ 600 ppm inhibitor concentration, corrosion rate and inhibition efficiency are found to be ~ 0.18 ± 0.1 mpy and ~ 94%, respectively. The superior corrosion inhibition is due to the adsorption of the phytochemicals onto the metallic surface, as confirmed from spectroscopic analysis. Findings show the suitability of the black seed extract for practical applications at neutral pH and room temperature. AFM and magnetic force microscopy indicate lower surface roughness and nearly pristine topography for the inhibitor-protected specimens. In situ AFM analyses indicate delayed formation of surface irregularities for the inhibitor-protected specimens. The obtained results clearly show the superior corrosion inhibition efficiency of the aqueous black seed extract against mild steel under simulated sea water condition.

show abstract

Alkylimidazolium Bromides as Corrosion Inhibitors for Mild Steel in Acidic Medium

Cited by 16 publications

References 29 publications

Inhibition of steel corrosion with imidazolium-based compounds -- experimental and theoretical study

Inhibition of steel corrosion with imidazolium-based compounds -- experimental and theoretical study

Norfloxacin Skeleton-Included Dendritic Molecules as Corrosion Inhibitors on Mild Steel in Hydrochloric Acid: From Experiments to Molecular Dynamics Simulation

Aqueous Black Seed (Nigella sativa L.) Extract-Mediated Corrosion Inhibition in Mild Steel Exposed to 3.5% NaCl: Effect of Temperature, pH, Time, and In Situ Analysis Using Atomic Force Microscopy

Contact Info

Product

Resources

About