Inhibition effects of ionic and non-ionic derivatives of imidazole compounds on hydrogen permeation during carbon steel pickling

Two derivatives of Iimidazolidin 4-one (IMID4) and Oxazolidin 5-one (OXAZ5), were investigated as corrosion inhibitors of corrosion carbon steel in sea water by employing the theoretical and experimental methods. The results revealed that they inhibit the corrosion process and their %IE followed the order: IMID4 (89.093%) > OXAZ5 (80.179%). The %IE obtained via theoretical and experimental methods were in a good agreement with each other. The thermodynamic parameters obtained by potentiometric polarization measurements have supported a physical adsorption mechanism which followed Langmuir adsorption isotherm. Quantum mechanical method of Density Functional Theory (DFT) of B3LYP with a level of 6-311++G (2d, 2p) were used to calculate the geometrical structure, physical properties and inhibition efficiency parameters, in vacuum and two solvents (DMSO and H2O), all calculated at the equilibrium geometry, and correlated with the experimental %IE. The local reactivity has been studied through Mulliken charges population analysis. The morphology of the surface changes of carbon steel were studied using SEM and AFM techniques.

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A New Method for Analyzing Transient Response of Hydrogen Permeation in Carbon Steel Sheet

ECS Meeting Abstracts ◽

10.1149/ma2016-02/10/1180 ◽

2016 ◽

Keyword(s):

Carbon Steel ◽

Transient Response ◽

Steel Sheet ◽

Hydrogen Permeation ◽

New Method ◽

Carbon Steel Sheet

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The Effect of the Partial Pressure of H2S and CO2 on the Permeation of Hydrogen in Carbon Steel by Using Pressure Buildup Techniques

CORROSION ◽

10.5006/3128 ◽

2019 ◽

Vol 75 (10) ◽

pp. 1207-1215

Author(s):

Nayef M. Alanazi ◽

Abdullah A. Al-Enezi

Keyword(s):

Steady State ◽

Carbon Steel ◽

Corrosion Rate ◽

Partial Pressure ◽

Hydrogen Permeation ◽

Measurement Techniques ◽

Permeation Rate ◽

Pressure Buildup ◽

Hydrogen Flux ◽

The Relationship

There are concerns in the industry about using an electrochemical technique for actual hydrogen permeation measurements where charging current is not a field condition. The objective of this work is to use pressure buildup techniques to study the influence of H2S and CO2 partial pressure on the relationship between hydrogen permeation and corrosion rate measured by different techniques. Sulfide films formed on carbon steel in a solution containing 5 wt% NaCl and 0.5 wt% acidic acid at various H2S and CO2 partial pressures were characterized, and the effect of the film on hydrogen permeation was also investigated. Field conditions were included in this study for comparison purposes. The relationship was modeled at the steady state of both hydrogen flux and corrosion rate. The results confirmed by use of two hydrogen flux measurement techniques (eudiometer and high-pressure buildup probe) and two corrosion measurement methods (weight loss coupons and coupled multiarray electrode system), that there is no direct correlation between hydrogen flux and corrosion rate. Therefore, the hydrogen permeation rate in H2S and CO2 environments was found to be more controlled by partial pressure of H2S than corrosion rate. The amount of descent in hydrogen flux, after reaching maximum of hydrogen permeation rate and before reaching a steady state, depends on the morphology and structure of corrosion films which are mainly controlled by concentration of H2S.

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Recommended Specimen Dimensions and Boundary Conditions for Measurement of Hydrogen Permeation in Thick Carbon Steel Plates

CORROSION ◽

10.5006/1327 ◽

2015 ◽

Vol 71 (5) ◽

pp. 585-597 ◽

Cited By ~ 1

Author(s):

Traidia ◽

A.M. El-Sherik ◽

H. Attar

Keyword(s):

Carbon Steel ◽

Boundary Conditions ◽

Hydrogen Permeation ◽

Steel Plates

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Convection-Dependent Hydrogen Permeation into a Carbon Steel Sheet

ECS Electrochemistry Letters ◽

10.1149/2.011406eel ◽

2014 ◽

Vol 3 (6) ◽

pp. C21-C23 ◽

Cited By ~ 8

Author(s):

K. Fushimi ◽

M. Jin ◽

T. Nakanishi ◽

Y. Hasegawa ◽

T. Kawano ◽

...

Keyword(s):

Carbon Steel ◽

Steel Sheet ◽

Hydrogen Permeation ◽

Carbon Steel Sheet

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Monosaccharide Derivatives as Eco-Friendly Corrosion Inhibitors for Carbon Steel in Neutral and Hydrochloric Acid Media

New Challenges and Industrial Applications for Corrosion Prevention and Control - Advances in Chemical and Materials Engineering ◽

10.4018/978-1-7998-2775-7.ch004 ◽

2020 ◽

pp. 84-99

Author(s):

Mohamed Rbaa ◽

Loubna Lakhrissi ◽

Younes Lakhrissi ◽

Parul Dohare ◽

Brahim Lakhrissi

Keyword(s):

Electrochemical Impedance Spectroscopy ◽

Carbon Steel ◽

Corrosion Inhibitors ◽

Electrochemical Impedance ◽

Inhibiting Activity ◽

Acid Media ◽

Inhibiting Effect ◽

The Comparative Study ◽

Hydrochloric Acid Media ◽

Derivatives Of

In this chapter, the authors present a synthesis of some works carried out within the framework of the study of the corrosion inhibiting activity of a set of monosaccharide derivatives as new biodegradable, nontoxic corrosion inhibitors, and respectful of the environment. The comparative study that they present reveals the existence of more than 20 compounds derivatives of monosaccharide used as corrosion inhibitors in neutral and acidic mediums, and which have given rise to very good corrosion inhibiting efficiencies. These studies of the corrosion inhibiting effect were studied using potentiodynamic polarization curves and electrochemical impedance spectroscopy methods.

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