Effect of alkyl chain length on the corrosion inhibition of mild steel in a simulated hydrochloric acid medium by a phosphonium based inhibitor

Subasree, N.; Selvi, J. Arockia; Pillai, Renjith S.

doi:10.1080/01694243.2021.2014233

Cited by 10 publications

(10 citation statements)

References 34 publications

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“…As a result, these molecules can be easily and strongly adsorbed onto the surface of steel . Alkyl chains have an important role along with heteroatoms in metal protection against corrosion . The hydrophobic properties of alkyl chains in organic inhibitors help in preventing contact between water molecules and the metal surface, and this leads to more area being covered on the metal surface, increasing the inhibition efficiency for organic molecules. , Various methods were employed by different authors to investigate the ability of azo dyes to inhibit corrosion. − They created three new azo acetyl coumarin derivatives, Acetyl A, B, and Start B, and investigated their potential as mild steel corrosion inhibitors in 1 M HCl in their studies.…”

Section: Introductionmentioning

confidence: 99%

Green Synthesis of a Novel Cationic Surfactant Based on an Azo Schiff Compound for Use as a Carbon Steel Anticorrosion Agent

Alanazi,

Alshammari,

Alanazi

et al. 2023

ACS Omega

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The new cationic surfactant-based azo Schiff compound (azoS8) was prepared, characterized, and investigated as a corrosion inhibitor for carbon steel in 1 M HCl by means of electrochemical approaches in this study. The chemical structure of azoS8 has been verified by the FTIR and 1 H NMR spectra. According to the electrochemical system, the examined surfactant is a mixed-type inhibitor. The surfactant azoS8 was an adequate corrosion inhibitor, as evidenced by the reduction in corrosion current densities and the rise in coverage of the surface identified with an evolving inhibitor amount. When the surfactant azoS8 had been added, the capacitive cycle loops on the Nyquist plots were broader, and the dimension of these loops expanded with surfactant azoS8 concentration. This implies that the amount of surfactant azoS8 led to an improvement in the impedance of the steel electrode. The surfactant azoS8 adsorption system is well suited to the Langmuir adsorption isotherm. It was discovered that azoS8 had a Gibbs free energy change value of −27.72 kJ mol –1 , which is a mixed adsorption mechanism containing both physisorption and chemisorption.

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Section: Introductionmentioning

confidence: 99%

Green Synthesis of a Novel Cationic Surfactant Based on an Azo Schiff Compound for Use as a Carbon Steel Anticorrosion Agent

Alanazi,

Alshammari,

Alanazi

et al. 2023

ACS Omega

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“…18 In this regard, ionic liquids (ILs) appeared as promising corrosion inhibitors for a series of metallic substrates due to their low melting point, high ionic conductivity, and low vapor pressure. [18][19][20][21][22][23][24][25][26] ILs were also combined with some particles to improve anticorrosion efficiency to epoxy coatings. In fact, epoxy coatings loaded with reduced graphene oxide (RGO), 27 GO, 15,28,29 PAni, 9 and PAni/carbon nanotube hybrid materials 8,9 modified with imidazolium-based ILs presented better anticorrosion efficiency when compared with the systems without IL.…”

Section: Introductionmentioning

confidence: 99%

“…The use of organic inhibitors constitutes another fruitful strategy for controlling, reducing, or even preventing reaction between the substrate and the aggressive components 18 . In this regard, ionic liquids (ILs) appeared as promising corrosion inhibitors for a series of metallic substrates due to their low melting point, high ionic conductivity, and low vapor pressure 18–26 . ILs were also combined with some particles to improve anticorrosion efficiency to epoxy coatings.…”

Section: Introductionmentioning

confidence: 99%

“…Phosphonium‐based ILs are important additives and present greater thermal stability than the imidazolium ILs, in addition to being commercially available at relative low cost 32 . Different phosphonium ILs derived from trialkyl phosphine and triphenyl phosphine were successfully used as corrosion inhibitors for several metallic substrates 22,33–35 . Recently, our group modified sepiolite clay with different phosphonium‐based ILs and used these materials as additive in epoxy coatings 36 .…”

Section: Introductionmentioning

confidence: 99%

“…32 Different phosphonium ILs derived from trialkyl phosphine and triphenyl phosphine were successfully used as corrosion inhibitors for several metallic substrates. 22,[33][34][35] Recently, our group modified sepiolite clay with different phosphonium-based ILs and used these materials as additive in epoxy coatings. 36 The addition of 1% of sepiolite modified with ethyl-(tributyl) phosphonium diethylphosphate and 11-carboxy-undecyl-(triphenyl)-phosphonium bromide resulted in outstanding anticorrosive properties, even in scratched epoxy coatings.…”

Section: Introductionmentioning

confidence: 99%

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Alkyl phosphonium‐based ionic liquids as promising additives for the corrosion protection of epoxy coatings in saline medium: Effect of the anion

Henriques,

Soares

2023

J of Applied Polymer Sci

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Alkyl phosphonium‐based ionic liquids (ILs), namely trihexyl(tetradecyl)‐phosphonium chloride (P66614Cl), ethyl‐(tributyl)‐phosphonium diethyl phosphate (P4442[dep]), trihexyl(tetradecyl)‐phosphonium bis(trifluorosulfonyl)imide (P66614[TFSI]), and trihexyl(tetradecyl)‐phosphonium zinc tetrachloride ([P66614]2[ZnCl4]) were used for the first time as anticorrosive additives for epoxy coatings on AISI 1020 carbon steel plates. The corrosion protection performance of intact and artificially scratched coatings was evaluated in 3.5 wt% NaCl aqueous solution by electrochemical impedance spectroscopy. Regarding the intact coatings, those containing 0.5 phr of [P66614]2[ZnCl4] and 1.0 phr of P66614[TFSI] and P4442[dep] presented excellent corrosion resistance up to 720 h of immersion with |Z|f=0.01Hz values higher than 1010 Ω cm2. The scratched coatings loaded with P4442[dep] displayed the best anticorrosive response after 168 h of immersion. Furthermore, these coatings and that loaded with 0.5 phr of [P66614]2[ZnCl4] displayed an increase of corrosion resistance with increasing the immersion time, suggesting the formation of a passivating layer at the epoxy–substrate interface. The inhibition characteristic of the corresponding anions in the IL component contributes for this behavior. The hydrophobic characteristic of the coatings before and after the immersion in the saline solution was studied by measuring the water contact angle. Furthermore, the adhesion strength after immersion was also investigated by pull‐off testing.

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Synthesis of alkynyl alcohol derivatives and its corrosion inhibition on N80 steel in 5 M HCl

Tu,

Li,

et al. 2024

Asia-Pacific J Chem Eng

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Alkynyl alcohol derivatives (N‐14) were synthesized by 2‐chloromethyl pyridine, propargyl alcohol and bromotetradecane and the structure was confirmed by 1H NMR, 13C NMR, MS and FTIR. The corrosion inhibition performance was evaluated by weight loss, Tafel polarization, EIS measurements and DFT quantum calculations. The results proved that N‐14 effectively inhibited the acid corrosion of N80 steel. The corrosion inhibition of N‐14 increased with its concentration and decreased with increasing temperature. A maximum of 99.56% inhibition efficiency was achieved using 5 × 10−5 mol/l of N‐14 at 60°C. Thermodynamic parameters showed that the adsorption of N‐14 on N80 steel is spontaneous and exothermic, conforming to Langmuir's adsorption. Electrochemical results showed that N‐14 behaved as a mixed‐type inhibitor. In addition, corrosion products produced on N80 steel surface were researched by SEM, XRD, UV and contact angle. At the same time, the corrosion inhibition mechanism was discussed.

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Effect of alkyl chain length on the corrosion inhibition of mild steel in a simulated hydrochloric acid medium by a phosphonium based inhibitor

Cited by 10 publications

References 34 publications

Green Synthesis of a Novel Cationic Surfactant Based on an Azo Schiff Compound for Use as a Carbon Steel Anticorrosion Agent

Green Synthesis of a Novel Cationic Surfactant Based on an Azo Schiff Compound for Use as a Carbon Steel Anticorrosion Agent

Alkyl phosphonium‐based ionic liquids as promising additives for the corrosion protection of epoxy coatings in saline medium: Effect of the anion

Synthesis of alkynyl alcohol derivatives and its corrosion inhibition on N80 steel in 5 M HCl

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