Benzimidazole‐2‐tione and benzoxazole‐2‐tione derivatives as corrosion inhibitors for aluminium in hydrochloric acid

Bereket, Gözen; Pinarbasi, Arzu; Öğretır, Cemi̇l

doi:10.1108/00035590410541364

Cited by 26 publications

(13 citation statements)

References 17 publications

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“…To prevent the attack of the corrosive species on the metallic surface, it is very important to add a corrosion inhibitor to decrease the rate of metal dissolution in such solutions. Thus, many studies concerning the inhibition of carbon steel corrosion using corrosion inhibitors of nonionic surfactants are conducted in the medium [9][10][11][12][13]. Corrosion inhibitors can be divided into three kinds: (i) inorganic inhibitors, (ii) organic inhibitors and (iii) mixed material inhibitors [14].…”

Section: Introductionmentioning

confidence: 99%

Quantum chemical calculations, synthesis and corrosion inhibition efficiency of ethoxylated-[2-(2-{2-[2-(2-benzenesulfonylamino-ethylamino)-ethylamino]-ethylamino}-ethylamino)-ethyl]-4-alkyl-benzenesulfonamide on API X65 steel surface under H2S environment

Migahed

Al-Sabagh

Khamis

et al. 2015

Journal of Molecular Liquids

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Section: Introductionmentioning

confidence: 99%

Quantum chemical calculations, synthesis and corrosion inhibition efficiency of ethoxylated-[2-(2-{2-[2-(2-benzenesulfonylamino-ethylamino)-ethylamino]-ethylamino}-ethylamino)-ethyl]-4-alkyl-benzenesulfonamide on API X65 steel surface under H2S environment

Migahed

Al-Sabagh

Khamis

et al. 2015

Journal of Molecular Liquids

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“…It is reported that nitrogen-containing compounds such as azole derivatives [3][4][5][6][7], imidazolin derivatives [8,9], alkyl and aryl amines [10][11][12] perform better in hydrochloric acid. In general, most of the effective and efficient inhibitors in usage are organic compounds having π bonds and heteroatoms like nitrogen, sulphur and oxygen atoms, etc., in their structures [13].…”

Section: Introductionmentioning

confidence: 99%

The Inhibitory Effect of Diethanolamine on Corrosion of Mild Steel in 0.5 M Sulphuric Acidic Medium

Singh¹,

Bhrara²,

Singh³

2007

Port. Electrochim. Acta

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The inhibitory effect of diethanolamine (DEA) on corrosion of mild steel in 0.5 M H 2 SO 4 was investigated by various corrosion monitoring techniques. Galvanostatic polarization study revealed that this compound is a very good inhibitor. The inhibition efficiency (I%) varies in the range of 88.7% to 55.3 % for a concentration range of 10 -3 M to 10 -7 M at 303 K, respectively. A study of corrosion potential (E corr ) reveals that DEA is a mixed type inhibitor. DEA inhibited mild steel corrosion due to physical adsorption of the inhibitor on the metal surface. The study at higher temperatures indicates that the inhibition efficiency decreases with the increase in temperature. The adsorption of DEA on the mild steel surface in 0.5 M H 2 SO 4 follows the Frumkin's adsorption isotherm. The results of potentiostatic polarization study revealed that DEA is a strong passivating additive. The results of infra red (IR) spectroscopy, scanning electron microscopy (SEM) and quantum chemical study supplement the results of the electrochemical techniques.

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“…Bereket et al 89 synthesised seven benzimidazole-2-tione and benzoxazole-2-tione derivatives, i.e. benzoxazole-2-tione (BOZ), benzimidazole-2-tione (BNZ), 5-methyl benzoxazole-2-tione (CH 3 -BOZ), 5methyl-benzimidazole-2-tione (CH 3 -BNZ), 5-chloro benzoxazole-2-tione (Cl-BOZ), 5-chloro-benzimidazole-2-tione (Cl-BNZ), and 5-nitro benzoxazole-2-tione (NO 2 -BOZ), and tested them as corrosion inhibitors for 99% aluminium in 0.1 M HCl solution at 20-60 °C, using the PSP technique.…”

Section: Organic Corrosion Inhibitors In Hcl Solutionmentioning

confidence: 99%

Organic corrosion inhibitors for aluminium and its alloys in acid solutions: a review

2016

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The aim of this review is to summarise the research work published in the last two decades on the use of organic compounds as corrosion inhibitors for aluminium and its alloys in acidic solutions. The focus is on HCl and H 2 SO 4 solutions due to their extensive use in different applications, such as chemical and electrochemical etching, acid cleaning, anodising, and acid pickling of aluminium. Other acids are also reviewed. The inhibition effectiveness of numerous organic compounds and their possible inhibition type and mechanism are also discussed. Electrochemistry is mainly used to investigate inhibitor performance. permanent contact of aluminium (or an alloy of aluminium) with a certain solution. This type of corrosion is especially frequent in chloride solutions. Corrosion protectionThere are several methods to protect aluminium and its alloys, among which the anodising process, conversion coatings, paints, organic coatings, and corrosion inhibitors are found to be the most effective.Anodising is an electrochemical process to increase the thickness of aluminium oxide, where aluminium metallic material is connected as an anode in the electrolytic cell. The anodised oxide layer is thus thicker (5-30 μm) than the natural oxide layer 2, 3, 10, 13, 14 .Conversion coating consist of poorly soluble phosphate or chromium oxides, which are tightly bound to the surface of aluminium or its alloys 15-17 . These coatings affect the appearance, corrosion potential, electrical resistance, and other surface properties. Conversion coatings are formed via a chemical oxidation-reduction process on the metal surface. However, the drawback of these coatings and the accompanying procedures is their negative environmental impact 2 . Therefore, in recent years increasing interest has been shown in conversion coatings containing cerium 18-23 and metallic ions 24-28 or their combination 29, 30 .As mentioned above, another method of corrosion protection is to employ organic coatings. Before applying the organic coating, the aluminium surface should be cleaned and prepared. The process consists of degreasing the surface, followed by removal of the existing oxide layer and the application of the base layer and the primer. The surface cleaning and treatment influences the adhesion and anticorrosion properties of these coatings 31, 32 . The final layer is selected depending on the environmental conditions in which the product will be used [33][34][35][36] . The use of organic-inorganic coatings in the protection of aluminium and its alloys has been also studied 37-39 . Corrosion inhibitorsCorrosion inhibitors modify the metal surface either by forming insoluble compounds with aluminium or by forming a protective surface layer. Based on the electrochemical mechanism of action, the inhibitors can be classified as mixed-type inhibitors (inhibiting both cathodic and anodic reactions of the corrosion couple), anodic-type inhibitors (inhibiting the anodic reaction), or cathodic-type inhibitors (inhibiting the cathodic reaction). Inhibitors may ...

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Benzimidazole‐2‐tione and benzoxazole‐2‐tione derivatives as corrosion inhibitors for aluminium in hydrochloric acid

Cited by 26 publications

References 17 publications

Quantum chemical calculations, synthesis and corrosion inhibition efficiency of ethoxylated-[2-(2-{2-[2-(2-benzenesulfonylamino-ethylamino)-ethylamino]-ethylamino}-ethylamino)-ethyl]-4-alkyl-benzenesulfonamide on API X65 steel surface under H2S environment

Quantum chemical calculations, synthesis and corrosion inhibition efficiency of ethoxylated-[2-(2-{2-[2-(2-benzenesulfonylamino-ethylamino)-ethylamino]-ethylamino}-ethylamino)-ethyl]-4-alkyl-benzenesulfonamide on API X65 steel surface under H2S environment

The Inhibitory Effect of Diethanolamine on Corrosion of Mild Steel in 0.5 M Sulphuric Acidic Medium

Organic corrosion inhibitors for aluminium and its alloys in acid solutions: a review

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