Effective inhibition of mild steel corrosion in 1 M hydrochloric acid using substituted triazines: an experimental and theoretical study

John, Sam; Joseph, Abraham

doi:10.1039/c2ra20663c

Cited by 63 publications

(34 citation statements)

References 43 publications

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“…Inhibitors protect the metal by adsorbing onto the surface to form an adsorbed, dielectric barrier between the metal and the solution. As per the literature, the presence of hetero atoms and π‐electrons in an inhibitor molecule is the basic criteria for determining good inhibitor behaviour . There are various experimental findings to support this position, such as studies on Schiff base, sodium dodecyl benzene sulphonate and ethanolamines as corrosion inhibitors of Al in the presence of acid.…”

Section: Introductionmentioning

confidence: 94%

“…As per the literature, the presence of hetero atoms and π-electrons in an inhibitor molecule is the basic criteria for determining good inhibitor behaviour. [6] There are various experimental findings to support this position, such as studies on Schiff base, [7,8] sodium dodecyl benzene sulphonate [9] and ethanolamines [10] as corrosion inhibitors of Al in the presence of acid. However, as these compounds are synthetically prepared, they might also be toxic to the environment, which leads to the demand for eco-friendly alternatives as corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Ladha

Shah

Ghelichkhah

et al. 2017

Materials & Corrosion

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Illicium verum extract is investigated as a corrosion inhibitor of aluminium in the presence of an acid medium using gravimetric and impedance techniques. The gravimetric results reveal that the adsorption of inhibitor on the metal surface is physisorption. The impedance measurements are used to interpret the electrochemical process occurring at the interface of aluminium and corrosive medium. The surface characteristics of aluminium are evaluated using scanning electron microscopy-energy dispersive X-ray spectroscopy. The percentage composition of chemical constituents present in the extract is obtained using gas chromatographymass spectrometry and E-anethole is found to be the main chemical component. The interaction between the chemical constituents or inhibitor molecules and the metal surface are evaluated using Monte Carlo simulation. The determination of electron density on the inhibitor molecules is performed using density functional theory. The results from this respective study demonstrate good inhibitive properties of the illicium verum extract towards the corrosion of aluminium in concentrated hydrochloric acid solution. K E Y W O R D Saluminium, corrosion inhibition, illicium verum extract, Monte Carlo simulation, electrochemical impedance spectroscopy 1 | INTRODUCTION Aluminium (Al) and its alloys are widely used, in the field of automotive, and aerospace engineering, packaging, and in other mechanical and engineering industries due to their lightweight, low cost, good mechanical strength and corrosion resistive properties. Al is resistant to corrosion due to the formation of stable aluminium oxide protective film over its surface in the presence of oxygen. However, the metal is corrosion resistant for engineering purposes only within the pH range of 4.5-8.5. [1] As the pH range is disturbed above or below this range, the metal undergoes rapid corrosion. During pickling and etching processes, Al comes into contact of acid solution having pH ranging between 1 and 3, which causes significant loss of the metal due to dissolution to form Al +3 . For pH, greater than 8.5, Al dissolves to form [Al(OH) 4 ] − . To reduce the corrosion rate of Al, appropriate inhibitors can be used in the pickling and etching solutions. [2][3][4][5] Inhibitors protect the metal by adsorbing onto the surface to form an adsorbed, dielectric barrier between the metal and the solution. As per the literature, the presence of hetero atoms and π-electrons in an inhibitor molecule is the basic criteria for determining good inhibitor behaviour. [6] There are various experimental findings to support this position, such as studies

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Ladha

Shah

Ghelichkhah

et al. 2017

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…Some derivatives of triazine [18][19][20], isoxazole [21,22] and pyrimidine [23][24][25][26][27] have been reported as excellent inhibitors for metals and alloys in hydrochloric acid solution, and exhibit different inhibition efficiency as a result difference in substituent groups and substituent positions on the aromatic rings. To the best of our knowledge, screened literature shows that the structural parameters, effect of temperature and corrosion inhibition of the studied compounds in the present work have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Experimental and quantum chemical studies of synthesized triazine derivatives as an efficient corrosion inhibitor for N80 steel in acidic medium

Yadav

Kumar

Tiwari

et al. 2015

Journal of Molecular Liquids

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“…where ) ( 1 T k and ) ( 2 T k are the specific corrosion rate constants at 1 T and 2 T , respectively and R is the universal gas constant (8.314 J/mol.K).…”

Section: Theoretical Considerations Kinetics Of the Corrosion Processmentioning

confidence: 99%

“…Acid solutions and, more specifically, hydrochloric acid, are used for the removal of rust and scale in industrial processes [1]. The contact between these acid solutions and metals used in industrial processes causes metal dissolution and corrosion.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Corrosion Kinetics of Mild Steel in Hydrochloric Acid in the Presence and Absence of a Drug Inhibitor

Aljbour

2016

Port. Electrochim. Acta

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Cefixime was investigated as a corrosion inhibitor for mild steel in an hydrochloric acid solution. The results revealed that the order of reaction is 0.427, with activation energy found to be 41.7 kJ/mol. Cefixime was effective in increasing the inhibition efficiency for all inhibition concentrations. The corrosion rate profile was found to be secondorder kinetics with respect to corrosion activity.Keywords: mild steel; hydrochloric acid; corrosion; cefixime; kinetics. IntroductionCorrosion of metals is a major problem for the application of metals in many services. Acid solutions and, more specifically, hydrochloric acid, are used for the removal of rust and scale in industrial processes [1]. The contact between these acid solutions and metals used in industrial processes causes metal dissolution and corrosion. Corrosion causes plant shutdowns, waste of valuable resources, loss or contamination of product, reduction in efficiency, costly maintenance and expensive overdesign [2]. Because iron and steel are the backbone of industrial constructions, many attempts have been made to find methods of reducing the corrosion and wear costs of these metals. One of the most important methods in the corrosion protection of these metals is using inhibitors. Corrosion inhibitor is a chemical substance that is effective when added to a corrosive environment in very small amounts, to decrease the corrosion rate of the exposed metallic material [3]. Heterocyclic compounds containing both nitrogen and sulfur are of particular importance, as they often provide excellent inhibition [4][5][6][7][8][9][10]. Both synthetic and naturally-occurring materials have been proposed as potential inhibitors for metal corrosion [11][12][13]. Several methods have been proposed to evaluate the inhibition efficiency. The most widely used method is based on comparing the relative rate of corrosion under inhibition with and without inhibition. The calculated rates of corrosion

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Effective inhibition of mild steel corrosion in 1 M hydrochloric acid using substituted triazines: an experimental and theoretical study

Cited by 63 publications

References 43 publications

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Experimental and computational evaluation of illicium verum as a novel eco‐friendly corrosion inhibitor for aluminium

Experimental and quantum chemical studies of synthesized triazine derivatives as an efficient corrosion inhibitor for N80 steel in acidic medium

Modeling of Corrosion Kinetics of Mild Steel in Hydrochloric Acid in the Presence and Absence of a Drug Inhibitor

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