Adsorption properties and inhibition of mild steel corrosion in hydrochloric solution by some newly synthesized diamine derivatives: Experimental and theoretical investigations

Herrag, L.; Hammouti, B.; Elkadiri, S.; Aouniti, A.; Jama, Charafeddine; Vezin, Hervé; Bentiss, Fouad

doi:10.1016/j.corsci.2010.05.024

Cited by 355 publications

(138 citation statements)

References 61 publications

Supporting

Mentioning

130

Contrasting

Unclassified

Order By: Relevance

“…Table 2 represents the 0 ads G  values, the negative values of the free energy means that the inhibitor was spontaneously adsorbed on mild steel-electrolyte interface. It has been reported that values of 0 ads G  up to -20 kJ/mol are consistent with the physisorption; those around -40 kJ/mol or higher are consistent with chemisorptions [10]. In the present study, the value of 0 ads G  is found to be around -43 kJ mol -1 , probably means that the adsorption of the inhibitor on the steel surface exhibits chemical adsorption.…”

Section: Adsorption Isothermsupporting

confidence: 73%

Inhibition effect of 1,1´-(pyridine-2,6-dihylbis(methylene))bis(5- methyl-1-H-pyrazole-3-carboxylic acid) on the corrosion of mild steel in 1 M HCl. Part A: Experimental study

2017

Int. J. Corros. Scale Inhib.

View full text Add to dashboard Cite

The inhibitory effect of 1,1´-(pyridine-2,6-dihylbis(methylene))bis(5-methyl-1-H-pyrazole-3-carboxylic acid) (EM1) was estimated on the corrosion of mild steel in 1 M hydrochloric acid using weight loss, Electrochemical Impedance Spectroscopy (EIS) and Tafel polarization curves. Inhibition was found to increase with increasing concentration of inhibitor studied. The adsorption of inhibitor molecules on mild steel surface was found to be spontaneous and obeyed the Langmuir adsorption isotherm. Values of inhibition efficiency calculated from weight loss, Tafel polarization curves, and EIS are in good agreement. Polarization curves showed that EM1 behaves as mixed type inhibitor in 1 M HCl medium. The results obtained showed that EM1 could serve as an effective inhibitor of the corrosion of mild steel in hydrochloric acid solution.

show abstract

Section: Adsorption Isothermsupporting

confidence: 73%

Inhibition effect of 1,1´-(pyridine-2,6-dihylbis(methylene))bis(5- methyl-1-H-pyrazole-3-carboxylic acid) on the corrosion of mild steel in 1 M HCl. Part A: Experimental study

2017

Int. J. Corros. Scale Inhib.

View full text Add to dashboard Cite

show abstract

“…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: 73%

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

Zaky

Sabbah²,

Negm

et al. 2017

Egypt. J. Chem.

View full text Add to dashboard Cite

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...

show abstract

“…However, the E a values exceed 20 kJ/mol (Table 1); this indicates that a surface reaction is the stage determining the crack growth [26]. It is believed that it is the formation of an activated complex on the metal surface upon the metal ionization [21][22][23][24][25], and this stage generally determines the rate of the overall anodic dissolution of iron or steels in acidic electrolytes.…”

Section: Resultsmentioning

confidence: 99%

Effect of temperature on the crack growth in pipe steel X70 in a weakly acidic electrolyte

2017

Int. J. Corros. Scale Inhib.

View full text Add to dashboard Cite

show abstract

Adsorption properties and inhibition of mild steel corrosion in hydrochloric solution by some newly synthesized diamine derivatives: Experimental and theoretical investigations

Cited by 355 publications

References 61 publications

Inhibition effect of 1,1´-(pyridine-2,6-dihylbis(methylene))bis(5- methyl-1-H-pyrazole-3-carboxylic acid) on the corrosion of mild steel in 1 M HCl. Part A: Experimental study

Inhibition effect of 1,1´-(pyridine-2,6-dihylbis(methylene))bis(5- methyl-1-H-pyrazole-3-carboxylic acid) on the corrosion of mild steel in 1 M HCl. Part A: Experimental study

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

Effect of temperature on the crack growth in pipe steel X70 in a weakly acidic electrolyte

Contact Info

Product

Resources

About