Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion

Oguzie, Emeka E.; Li, Y.; Wang, F.H.

doi:10.1016/j.jcis.2007.01.038

Cited by 430 publications

(183 citation statements)

References 36 publications

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“…3 shows that halide additives, namely KCl, KBr and KI, generally improved the inhibition efficiency of the extract at the temperatures studied. Such enhancement in the efficiency of organic inhibitors in the presence of halide salts has been previously observed and was ascribed to the synergistic effect [16][17][18]. …”

Section: Inhibition Efficiencymentioning

confidence: 64%

Corrosion Inhibitive Effect and Adsorption Behaviour of Hibiscus Sabdariffa Extract on Mild Steel in Acidic Media

Oguzie

2007

Port. Electrochim. Acta

117

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The inhibiting action of the calyx extract of Hibiscus sabdariffa on mild steel corrosion in 2 M HCl and 1 M H 2 SO 4 solutions was assessed using a gasometric technique. The results demonstrate that Hibiscus sabdariffa extract suppressed the corrosion reaction in both acid media and inhibition efficiency increased with extract concentration with slightly higher values obtained in 1 M H 2 SO 4 . Synergistic effects increased the efficiency of the extract in the presence of halide additives. Adsorption characteristics of the extract were approximated by the Langmuir isotherm. The inhibition mechanisms, estimated from the temperature dependence of inhibition efficiency as well from kinetic and activation parameters show that the extract functioned via mixedinhibition mechanism. It is suggested that molecular as well as protonated organic species in the extract contribute to the observed inhibiting action.

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Section: Inhibition Efficiencymentioning

confidence: 64%

Corrosion Inhibitive Effect and Adsorption Behaviour of Hibiscus Sabdariffa Extract on Mild Steel in Acidic Media

Oguzie

2007

Port. Electrochim. Acta

117

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“…The adsorption mechanism for a given inhibitor depends on such factors, as the nature of metal corrosion medium, the pH and the concentration of the inhibitor as well as the functional groups present in its molecule [7]. The corrosion inhibition process is based on the adsorption of the amino acid molecules on the active sites and/or deposition of the corrosion products on the alloy surface [8,9].…”

Section: Resultsmentioning

confidence: 99%

Lysine as corrosion inhibitor for low alloy carbon steel in acidic media

Jano

Lame

Kokalari

2014

Analele Universitatii "Ovidius" Constanta - Seria Chimie

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The use of inhibitors is one of the most practical means for protecting metals against corrosion, especially in acidic media. The interest is to use organic compounds as inhibitors due mainly to their inherent and non-toxic nature. Amino acids are attractive as corrosion inhibitors because they are nontoxic, relatively easy to produce with high purity at low cost, and are soluble in aqueous media. Lysine, one kind of amino acid is used as inhibitor. The aims of this study are to show corrosion protection efficiency of lysine and to explain the mechanism of corrosion. The experimental results demonstrated that the lysine offered protection for low alloy carbon steel in aggressive environments like H 2 SO 4 . Materials under investigation are two types of low alloy carbon steel marked as: Steel 39, Steel 44 (usually applied to concrete as reinforcing bars). The corrosion media consists in sulfuric acid in presence of chloride ions, in form of NaCl (H 2 SO 4 1M + Cl -10 -3 M). Potentiodynamic polarization methods are used for inhibitor efficiency testing. Potentiodymanic polarization measurements showed that the presence of lysine in acidic solution decreases the corrosion current to a good extent. The corrosion inhibition efficiency improves with the increase of the lysine concentration. The use of this inhibitor (1g/L) protects steel 39 in acidic media with 78.88% efficiency. That means lysine is a good corrosion inhibitor for these aggressive conditions.

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“…The equivalent circuit diagram that is used consists of the R s , R t , and CPE are "resistance of solution", "resistance of charge transfer" and "constant phase element" respectively. Thus, the CPE represents the capacitance of electrical double layer "Cdl" that explains the behaviour of the whole heterogeneous system and to yield more accuracy when applied to the experimental results 44 . The circuit diagram placed R t in parallel to the CPE which is defined by Y 0 which is the coefficient of CPE and n is an exponent or could be defined as the phase shift to give a picture of the degree of inhomogeneity of the surface 45 .…”

Section: Fig (3)mentioning

confidence: 99%

A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

2017

Irq. Nat. J. Chem.

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The corrosion inhibition effects of cefixima and aminobenzylpenicillin drug inhibitors in 0.05M deaerated sulfuric acid solution for carbon steel have been studied by using electrochemical techniques and quantum chemical calculations as well as scanning electron microscope (SEM). It is observed from the experimental findings that both compounds perform as good inhibitors and behave according to mixed type inhibitor in terms of their inhibitory action. Additionally, it was found the percentage of corrosion inhibition become maximal when the concentrations of the cefixima and aminobenzylpenicillin inhibitors are increased. The influence of temperature on the corrosion of carbon steel has been investigated and the activation energy values estimated. The corrosion efficiency decreases with increasing the temperature range. The parameters of thermodynamic have been determined and indicate that the adsorption mechanism follows the Langmuir isotherm model and forms a protective layer on carbon steel surface electrode, which was characterized by scanning electron microscope measurements, to prevent a corrosion process. Quantum chemical calculations have been performed to provide evidence for corrosion inhibition according to the chemical structures of the cefixima and aminobenzylpenicillin drug inhibitors.

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Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion

Cited by 430 publications

References 36 publications

Corrosion Inhibitive Effect and Adsorption Behaviour of Hibiscus Sabdariffa Extract on Mild Steel in Acidic Media

Corrosion Inhibitive Effect and Adsorption Behaviour of Hibiscus Sabdariffa Extract on Mild Steel in Acidic Media

Lysine as corrosion inhibitor for low alloy carbon steel in acidic media

A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

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