Synthesis and evaluation of novel series of Schiff base cationic surfactants as corrosion inhibitors for carbon steel in acidic/chloride media: experimental and theoretical investigations

El‐Lateef, Hany M. Abd; Tantawy, A. O.

doi:10.1039/c5ra21626e

Cited by 83 publications

(39 citation statements)

References 71 publications

(54 reference statements)

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“…It is observed to an increase in n values in the inhibited solutions compared to the blank (Table ), indicating that surface morphology of in the presence of inhibitors have been smoothened uncommonly because of the adsorption of studied H 2 Sanp and its Ni‐ and Co‐complexes on the metal surface. Similar observation has been mentioned by our working group previously, which was related to a decrease in heterogeneity resulting from the inhibitor molecules adsorption on the surface of C‐steel. Moreover, to the surface inhomogeneity n value could be also applied for investigated the impedance spectra nature as value of n = 1, 0.5, 0 and − 1 represent capacitance, Warburg impedance resistances and inductance and, respectively .…”

Section: Resultssupporting

confidence: 90%

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

El‐Lateef

Sayed

Adam

2019

Applied Organom Chemis

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Condensation of 2,5-dihydrazinyl thiadiazole with 5-sodium sulfonate salicylaldehyde afforded dibasic tetradentate pincer N,O,O,N-salicyldiene thiadiazole ligand (H 2 Sanp). The novel dipolar ligand formed para-magnetic pincer complexes within Co (II) and Ni (II) ions (Co-Sanp and Ni-Sanp) under sustainable conditions. The water-soluble ligand and its metal-complexes were estimated by mass, IR and UV-Visible spectroscopy, EA (elemental analyses), TGA (Thermogravimetric analyses), magnetic susceptibility, and conductivity measurements. The catalytic reactivity of Co-Sanp and Ni-Sanp were evaluated in the Suzuki and Buchwald-Hartwig cross coupling reaction in aqueousmethanol binary mixtures. Both reactions of boronic acid or aryl amines with aryl halides gave high chemoselective yield of C-C or C-N product. The inhibition characteristics of H 2 Sanp and its Ni-and Co-complexes were performed for the C-steel corrosion in 1.0 M HCl using electrochemical measurements and surface analysis methods. These methods indicated that the synthesized compounds have served as efficient mixed-type corrosion inhibitors and their adsorption on the steel surface obeyed isotherm model of Langmuir. Co-Sanp inhibitor displays the best corrosion inhibition efficiency, and the capacity is up to 97.11% at of 250 mg L −1 . Surface analysis confirms formation of protective layer on the C-steel surface.

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Section: Resultssupporting

confidence: 90%

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

El‐Lateef

Sayed

Adam

2019

Applied Organom Chemis

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“…It is also noted that the high value of K ads for pure Pb indicates stronger adsorption on the metal surface than that on the other alloys. Large values of K ads imply more efficient adsorption and hence better inhibition efficiency [47]. It is seen that the values of K ads are decreased with an increase in temperature, confirming the suggestion that the investigated inhibitor is physically adsorbed on the surfaces of Pb and Pb-In alloys, and the strength of the adsorption decreases with temperature.…”

Section: Adsorption Isotherm and Thermodynamic Parameters For The Corsupporting

confidence: 73%

Corrosion inhibition and adsorption behavior of phytic acid on Pb and Pb–In alloy surfaces in acidic chloride solution

et al. 2019

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The corrosion and corrosion inhibition of Pb and Pb-In alloys in HCl solution, were investigated. The study was performed in the absence and presence of the phytic acid (PA) inhibitor using potentiodynamic polarization and electrochemical impedance spectroscopy measurements, and complementary by scanning electron microscope (SEM) and X-ray spectroscopy analysis (EDX) investigations. The obtained outcomes showed that the PA is efficient corrosion inhibitor for Pb and Pb-In alloys in HCl solution. The inhibition efficiency (η %) for Pb and its investigated alloys increases with an increase in the concentration of PA and decreases with increasing temperature. The maximum inhibition efficiency (≈ 80%) was obtained at 1 × 10 −3 M of the PA inhibitor. Langmuir adsorption isotherm fits well the experimental data. SEM/EDX observations of the electrode surface confirmed the existence of an adsorbed film. One can conclude that the increase in activation energy with increasing additive concentration, in addition to the decrease in η % in the presence of inhibitor with temperature, is suggestive of physical adsorption of the inhibitor molecules on the surface of Pb and Pb-0.5In alloy.

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“…From the data in Table 3, it is noted that the biodegradation extent of different cationic surfactant solutions increases gradually by increasing the time and length of the hydrophobic chain. Also, it was found that the presence of a benzene nucleus in all synthesized cationic surfactants leads to decrease of the biodegradation values if compared with the other synthesized cationic surfactants [29,45].…”

Section: Foaming Power and Biodegradabilitymentioning

confidence: 88%

“…Foam formation was measured by the foam height (in ml) initially produced, and foam stability was recorded by the time [28]. The biodegradability was measured according to the previous work [29].…”

Section: Foaming Power and Biodegradabilitymentioning

confidence: 99%

Novel Quaternary Ammonium‐Based Cationic Surfactants: Synthesis, Surface Activity and Evaluation as Corrosion Inhibitors for C1018 Carbon Steel in Acidic Chloride Solution

El‐Lateef

Tantawy

Abdelhamid

2017

J Surfact & Detergents

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A novel class of quaternary ammonium-based cationic surfactants is synthesized and characterized via spectroscopic methods (FTIR, 1 H NMR and 13 C NMR). The surface properties, foaming power and biodegradability of the synthesized cationic surfactants are determined using the surface tension technique. The protection performance with their adsorption mechanisms for carbon steel is evaluated in a 15% HCl solution by a series of techniques including electrochemical impedance spectroscopy, potentiodynamic polarization curves, scanning electron microscopy (SEM), X-ray spectroscopy, and UV-visible spectroscopy. The surfactants are found to be excellent corrosion inhibitors for carbon steel. The results show that the inhibition efficiencies are increased by increasing the concentration and the hydrophobic chain length of the tested compounds reaching the maximum at 250 ppm. The potentiodynamic polarization curves suggested that the inhibitors behave as a mixed type with predominant cathodic inhibition and the corrosion behavior can be explained by the adsorption film mechanism. Moreover, the mode of adsorption obeys the Langmuir adsorption isotherm; also, the adsorbed layer on the surface of the metal is approved by using SEM. . As a researcher, he is currently interested in synthesis of organic compounds and their applications. J Surfact Deterg (2017) 20:735-753 753

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Synthesis and evaluation of novel series of Schiff base cationic surfactants as corrosion inhibitors for carbon steel in acidic/chloride media: experimental and theoretical investigations

Abstract: A new family of Schiff base cationic surfactants (CSSB) having various alkyl chain lengths were prepared and their chemical structure was elucidated by using different spectroscopic techniques (FTIR, 13C-NMR and 1H-NMR).

Cited by 83 publications

References 71 publications

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

Sulfonated salicylidene thiadiazole complexes with Co (II) and Ni (II) ions as sustainable corrosion inhibitors and catalysts for cross coupling reaction

Corrosion inhibition and adsorption behavior of phytic acid on Pb and Pb–In alloy surfaces in acidic chloride solution

Novel Quaternary Ammonium‐Based Cationic Surfactants: Synthesis, Surface Activity and Evaluation as Corrosion Inhibitors for C1018 Carbon Steel in Acidic Chloride Solution

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