Corrosion Inhibition and Adsorption Properties of Methocarbamol on Mild Steel in Acidic Medium

Ebenso, E. E.; Eddy, Nnabuk Okon; Odiongenyi, Anduang O.

doi:10.4152/pea.200901013

Cited by 123 publications

(76 citation statements)

References 18 publications

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“…(2), decreases with increase in the concentration of the ethanol extract of Dialium guineense leaves, suggesting again that the A r t i c l e i n P r e s s extract inhibits corrosion of the mild steel in 0.5 M HCl. Also, corrosion rates at all concentrations of inhibitor increase with the temperature increase, what is due to the increase in the average kinetic energy of the reacting molecule and similar to the already reported results [20,21].…”

Section: Resultssupporting

confidence: 75%

Comparative analysis of adsorption and corrosion inhibitive properties of ethanol extract of Dialium Guineense leaves for mild steel in 0.5 M HCl

Adeniji

Akindehinde²

2018

J. Electrochem. Sci. Eng.

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Section: Resultssupporting

confidence: 75%

Comparative analysis of adsorption and corrosion inhibitive properties of ethanol extract of Dialium Guineense leaves for mild steel in 0.5 M HCl

Adeniji

Akindehinde²

2018

J. Electrochem. Sci. Eng.

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“…We have also recently reported on some studies using some drugs as corrosion inhibitors in our laboratories [37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

Theoretical studies of some sulphonamides as corrosion inhibitors for mild steel in acidic medium

Ebenso

Arslan

Kandemi̇rlı

et al. 2010

Int J of Quantum Chemistry

149

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Density functional theory (DFT) at the B3LYP/6-31G (d,p) and BP86/ CEP-31G* basis set levels and ab initio calculations using the RHF/6-31G (d,p) methods were performed on four sulfonamides (namely sulfaacetamide (SAM), sulfapyridine (SPY), sulfamerazine (SMR), and sulfathiazole (STI)) used as corrosion inhibitors for mild steel in acidic medium to determine the relationship between molecular structure and their inhibition efficiencies (%IE). The order of inhibition efficiency obtained was SMR > SPY > STI > SAM which corresponded with the order of most of the calculated quantum chemical parameters namely E HOMO (highest occupied molecular orbital energy), E LUMO (lowest unoccupied molecular orbital energy), the energy gap (DE), the Mulliken charges on the C, O, N, S atoms, hardness (g), softness (S), polarizability (a), dipole moment (l), total energy change (DE T ), electrophilicity (x), electron affinity (A), ionization potential (I), the absolute electronegativity (v), and the fraction of electrons transferred (DN). Quantitative structure activity relationship (QSAR) approach has been used and a correlation of the composite index of some of the quantum chemical parameters was performed to characterize the inhibition performance of the sulfonamides studied. The results showed that the %IE of the sulfonamides was closely related to some of the quantum chemical parameters but with varying degrees/order. The calculated %IE of the sulfonamides studied was found to be close to their experimental corrosion inhibition efficiencies. The experimental data obtained fits the Langmuir adsorption isotherm. The negative sign of the E HOMO values and other thermodynamic parameters obtained indicates that the data obtained supports physical adsorption mechanism.

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“…The efficiencies of these organic corrosion inhibitors depend on the presence of polar functional groups with S, O or N atoms in the molecule, heterocyclic compounds and pi electrons. The polar function is usually regarded as the reaction center for the establishment of the adsorption process [9].…”

Section: Introductionmentioning

confidence: 99%

The use of morinda citrifolia as a green corrosion inhibitor for low carbon steel in 3.5% NaCl solution

Kusumastuti

Pramana

Soedarsono

2017

AIP Conference Proceedings

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Abstract. The effect and mechanism of green corrosion inhibitor of Morinda Citrifolia (Noni) toward low carbon steel material has been researched. The general background is to develop the cheap and eco-friendly corrosion inhibitor based on components taken from tropical plants that grow +in Indonesia. This research aims to determine the effectiveness of the use of the extracts of noni as green corrosion inhibitor of carbon steel material in aggressive environment. The medium applied for this experiment is 3.5% natrium chloride solution. The variation of the concentration and immersion time duration has been applied as the experimental parameters. All the work was done at room temperature. The corrosion rate was measured by electrochemical polarization method with CMS 600-Gamry instruments and weight loss. The adsorption of inhibitor into the metal surface, which induced bonding formation after immersion was observed by using FTIR method. Inhibition mechanism was observed by polarization curves and fitted by the Langmuir adsorption models. The experimental results show that the higher concentration of inhibitor increasing the inhibition effect. The optimum inhibition is obtained at 3 ppm noni fruit extract, after immersion for about 288 hours. The corrosion rates obtained was 1.385 mpy, with the inhibitor efficiency of 76.92%. The monolayer film is formed coating the surface material as a result of mixed type corrosion inhibitor behavior of Noni. It can be concluded that this green inhibitor is effective to be used for low carbon steel material.

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Corrosion Inhibition and Adsorption Properties of Methocarbamol on Mild Steel in Acidic Medium

Cited by 123 publications

References 18 publications

Comparative analysis of adsorption and corrosion inhibitive properties of ethanol extract of Dialium Guineense leaves for mild steel in 0.5 M HCl

Comparative analysis of adsorption and corrosion inhibitive properties of ethanol extract of Dialium Guineense leaves for mild steel in 0.5 M HCl

Theoretical studies of some sulphonamides as corrosion inhibitors for mild steel in acidic medium

The use of morinda citrifolia as a green corrosion inhibitor for low carbon steel in 3.5% NaCl solution

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