Inhibiting effect of some synthesized surfactants from petroleum oils on the corrosion of aluminium in hydrochloric acid solution

Mehdaoui, R.; Khelifa, A.; Aaboubi, O.

doi:10.1007/s11164-013-1222-0

Cited by 14 publications

(5 citation statements)

References 40 publications

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“…They have many advantages, including low toxicity, safety, easy adsorption on the steel surface, low cost, ease of production, and high inhibition efficiency [13][14][15][16][17][18][19]. A surfactant compound is one that tends to accumulate at a surface or interface due to its high surface activity resulting from the adsorption of the surfactant molecules at the interface between bulk phases, forming aggregations called micelles, such as air and water, oil and water or electrode and solution [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

New Schiff base cationic surfactants as corrosion inhibitors for carbon steel in acidic medium: weight loss, electrochemical and SEM characterization techniques

2015

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Two new Schiff base cationic surfactants were synthesized and their chemical structures confirmed using FTIR spectroscopy. The tensioactive and thermodynamic characteristics of their solutions were determined using surface tension/log concentration plots. The protection performance of the synthesized compounds against carbon steel corrosion in 1 M HCl solution was evaluated using weight loss and electrochemical techniques. The compounds were found to be excellent corrosion inhibitors, and their efficiency increased with increasing inhibitor concentration. The mode of adsorption obeyed the Langmuir adsorption isotherm. Polarization curves showed that the two compounds were mixed-type inhibitors. The temperature dependence of the corrosion rate in the absence and presence of these compounds was studied in a temperature range of 303 to 333 K using the weight loss data. Activation parameters E a , DH a o , and DS a o were determined and discussed. In addition, the presence of a protective film on the carbon steel surface was confirmed using scanning electron microscopy (SEM).

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Section: Introductionmentioning

confidence: 99%

New Schiff base cationic surfactants as corrosion inhibitors for carbon steel in acidic medium: weight loss, electrochemical and SEM characterization techniques

2015

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“…Generally, the magnitude of ΔG ads is around -20 kJ/mol or lower are consistent with the electrostatic interaction between charged inhibitor molecules and the charged metal surface (physisorption); those around -40 kJ/mol or higher involve charge sharing or transfer from the inhibitor molecules to the metal surface to form a coordinate type of bond (chemisorption) [51][52][53][54][55]. The ΔG ads values are ranged between -18.12 and -26.49 kJ/mol.…”

Section: Inhibitor Dosementioning

confidence: 67%

Biocidal activity and corrosion inhibition of some cationic surfactants derived from Thiol polyurethane.

Zaky

Sabbah²,

Negm

et al. 2017

Egypt. J. Chem.

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SIX series of cationic polyurethane surfactants were synthesized by the reaction between different six esters (which prepared by condensation of fatty alcohols namely: octanol, decanol, dodecanol, tetradecanol, hexadecanol and octadecanol with bromoacetic acid) and polyurethane as quaternizing agent. The chemical structures of these surfactants were confirmed using elemental analysis, FTIR spectra, + HNMR and UV analysis. The surface activities of the synthesized cationic thiol polyurethane surfactants showed their tendency towards adsorption at the air/water interface. The adsorption tendency was estimated from the values of surface tension and the depression of surface tension at the critical micelle concentration. The studied surfactants were evaluated as antimicrobial agents against pathogenic and sulfur reducing bacteria using inhibition zone diameters and minimum inhibition concentration values. The synthesized cationic thiol polyurethane surfactants showed good antimicrobial activities against the tested microorganisms including Gram positive, Gram negative as well as fungi. The synthesized compounds were tested for the activity as corrosion inhibitors against carbon steel corrosion in 2N H 2 SO 4 at 50, 100, 200, 400 and 600 ppm. The inhibition efficiencies of the tested compounds showed good inhibition and protection of the carbon steel. The corrosion inhibition tendency correlated to the surface activity and chemical structure of the compounds.Keywords: Cationic surfactants, Surface activity, Adsorption , Antimicrobial activity, Corrosion inhibition, Polyurethane. IntoductionCorrosion inhibitors are added to prevent metal dissolution during its surface cleaning from oxides and other adherent materials [1]. Also, corrosion inhibitors may be liquids or powder form that effectively reduces the corrosion rate by adsorbing on the metal surface [2,3]. Corrosion inhibition efficiency of organic compounds is related to their adsorption properties [4]. Corrosion protection of steel in acidic media is of great importance for both industrial facilities and theoretical aspects [5]. The adsorption of these molecules depends mainly on certain physicochemical properties of the inhibitor molecule such as the presence of heteroatoms including: oxygen, sulfur, nitrogen atoms and multiple bonds in the molecule through which they are adsorbed on the metal surface [6][7][8][9][10].Heteroatoms such as nitrogen, oxygen, and sulfur are capable of forming coordinate covalent bond with metal owing to their free electron pairs and thus acting as inhibitor. Compounds with π bonds generally exhibit good inhibitive properties due to the interaction of π orbital with metal surface [11][12][13]. The selection of a suitable inhibitor for a particular system is a difficult task because of the selectivity of the inhibitors and wide variety of corrosive environment. As a result, several types of corrosion inhibitors were developed to fit the different types of corrosion processes and also the medium where the corrosion takes place. Cor...

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“…Mehdaoui et al 99 distilled Algerian crude oil and the four petroleum fractions obtained, i.e. gasoil sulfonate, kerosene sulfonate, heavy solvent sulfonate, and total gasoline sulfonate, were tested as corrosion inhibitors for 93.68% aluminium in 1 M HCl solution at 20 °C, using the WL, polarisation, and EIS techniques.…”

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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Inhibiting effect of some synthesized surfactants from petroleum oils on the corrosion of aluminium in hydrochloric acid solution

Cited by 14 publications

References 40 publications

New Schiff base cationic surfactants as corrosion inhibitors for carbon steel in acidic medium: weight loss, electrochemical and SEM characterization techniques

New Schiff base cationic surfactants as corrosion inhibitors for carbon steel in acidic medium: weight loss, electrochemical and SEM characterization techniques

Biocidal activity and corrosion inhibition of some cationic surfactants derived from Thiol polyurethane.

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

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