Inhibitive Effect of Some Gemini Surfactants as Corrosion Inhibitors for Mild Steel in Acetic Acid Media

Ansari, Farhat A.; Quraishi, M.A.

doi:10.1007/s13369-010-0008-6

Cited by 30 publications

(19 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This double layer was formed by the adsorption of the inhibitor molecules at the metal/solution interface and replaced water molecules gradually. These observations support the idea that the corrosion of API 5L-B is controlled by a charge transfer process [9,13].…”

Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 86%

“…At each concentration, the shape of the Nyquist plot remained the same with one depressed semicircle in all experiments, indicating that almost no change in the corrosion mechanism occurs due to the inhibitor addition. The shape of the Nyquist plot looks comparable to that obtained by John, Joy, Prajila and others [7][8][9].…”

Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 85%

See 1 more Smart Citation

Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

Ibraheem

Fouda

Rashad³

et al. 2012

ISRN Metallurgy

View full text Add to dashboard Cite

Corrosion inhibition and adsorption behavior of two triazole derivatives on API 5L-B carbon steel in CO 2 -saturated 3.5% NaCl solutions was investigated using potentiodynamic polarization, EIS, and EFM techniques. Specimen surfaces were characterized using SEM, EDX, and XRD. Results show that the two compounds are mixed-type inhibitors and inhibition efficiency increases with increasing concentrations. Adsorption of the two compounds chemisorption and obeys Langmuir adsorption isotherm. Activation energy and thermodynamic parameters were calculated. Surface analyses confirm the formation of iron nitrides on the metal surface which supports results obtained from previous techniques.

show abstract

Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 86%

Section: Electrochemical Impedance Spectroscopy (Eis)supporting

confidence: 85%

Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

Ibraheem

Fouda

Rashad³

et al. 2012

ISRN Metallurgy

View full text Add to dashboard Cite

show abstract

“…This model suggests that the inhibitor molecules occupy only one site on the metal surface and there is no interaction between the other adsorbed molecules [48].…”

Section: Inhibitor Dosementioning

confidence: 99%

“…The correlation between the inhibitor dose and the percent of metal surface covered by the inhibitor molecules (ϴ) is called the adsorption isotherm and provides information about the interaction between the inhibitor molecules and the metal surface [48]. The correlation between ϴ and the inhibitor concentration in the corrosive medium was represented by Langmuir adsorption isotherm, which is numerically represented in Eq.…”

Section: Inhibitor Dosementioning

confidence: 99%

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

“…The adsorbed surfactant molecules form a monolayer or bilayer hemimicelles or admicelles and prevent the acids to attack the surface, and thus reduce the corrosion [23][24][25][26] . In recent years, a new class of surfactants called gemini or dimeric surfactants have attracted great attention in corrosion inhibition [27][28][29] . The gemini surfactants contains two hydrophilic and two hydrophobic (sometimes three) groups per molecule separated by a rigid or flexible spacer rather than one hydrophilic and one hydrophobic group for conventional surfactants.…”

Section: Introductionmentioning

confidence: 99%

Alkanediyl-α, ω-bis (dimethyl cetylammonium bromide) gemini surfactants as novel corrosion inhibitors for mild steel in formic acid

Mobin

Masroor

2012

Mat. Res.

View full text Add to dashboard Cite

Gemini surfactants, butanediyl 1,4-bis(dimethyl cetylammonium bromide), pentanediyl 1,5 -bis (dimethyl cetylammonium bromide) and hexanediyl 1,6 -bis (dimethyl cetylammonium bromide) from Alkanediyl-α, ω-bis (dimethyl cetylammonium bromide) series were synthesized in laboratory and were characterized by using Nuclear Magnetic Resonance (NMR) spectroscopy. The surfactants were tested as corrosion inhibitors for mild steel in 20% formic acid. The influence of surfactants on mild steel corrosion inhibition was investigated by measuring the corrosion rate of mild steel in their absence and presence by weight loss measurements, solvent analysis of iron ions into the test solution and potentiodynamic polarization measurements. The surface morphology of the corroded steel samples in presence and absence of surfactants was evaluated by using Scanning Electron Microscopy (SEM). The synthesized gemini surfactants performed as excellent corrosion inhibitor, the inhibition efficiency (IE) being in the range of 76.66-97.41%. The IE of surfactants is slightly affected by the spacer length. The IE increased with increase in surfactant concentration and temperature. The adsorption of gemini surfactants on the steel surface was found to obey Langmuir adsorption isotherm. The results of the potentiodynamic polarization studies are consistent with the results of weight loss studies.

show abstract

Inhibitive Effect of Some Gemini Surfactants as Corrosion Inhibitors for Mild Steel in Acetic Acid Media

Cited by 30 publications

References 25 publications

Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

Sweet Corrosion Inhibition on API 5L-B Pipeline Steel

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

Alkanediyl-α, ω-bis (dimethyl cetylammonium bromide) gemini surfactants as novel corrosion inhibitors for mild steel in formic acid

Contact Info

Product

Resources

About