Four novel imidazolium-derived ionic liquids: Synthesis and anti-corrosion characteristics

Deyab, M.A.; Nessim, M.I.; Haikal, Abdelfattah; Mohsen, Q.; Khalil, Naglaa

doi:10.1016/j.molliq.2022.118984

Cited by 16 publications

(5 citation statements)

References 48 publications

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“…1-hexyl-2-methyl-1H-imidazole was synthesized using the same technique as our prior work 43 . In this experiment, 50 ml of acetonitrile was used to dissolve a known portion of 2-ethylimidazole and KOH (pellets) while stirring at room temperature for 30 min.…”

Section: Methodsmentioning

confidence: 99%

Imidazolium-based ionic liquids as dispersants to improve the stability of asphaltene in Egyptian heavy crude oil

Ghanem,

Nessim,

Khalil

et al. 2023

Sci Rep

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Deposition of asphaltene aggregates can easily depress the oil production, because it may clog the wellbores, annulus, pipelines, and surface facilities. Moreover, asphaltene molecules have a negative effect on the catalytic reactions in the refinery process. Therefore, in this work, three different ionic liquids (IL-H, IL-CH3, and IL-NO2) were synthesized, and characterized using FT-IR and NMR spectroscopy to evaluate their efficiency as asphaltene dispersants. The thermal gravimetric analysis of the prepared ILs showed that IL-H, IL-NO2, and IL-CH3 were thermally stable up to 280 °C. The ILs showed good dispersion activity of the petroleum asphaltenes, where the asphaltene onset precipitation (AOP) was changed from 7.5 to 10.5, 11, and 13.5 ml added n-heptane after the use of IL-H, IL-NO2, and IL-CH3, respectively. Moreover, the colloidal instability index of crude oil was changed from 0.92 (unstable asphaltene) to 0.69 (stable asphaltene). It is noted during the experiments that the presence of an alkyl chain attached to the ionic liquid moiety increases the efficiency of the dispersant. This may be owing to the formation of π–π* with asphaltene molecules due to the presence of electron donating group. Quantum chemical parameters were calculated for the prepared ILs, and the theoretical data confirmed the experimental results.

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Section: Methodsmentioning

confidence: 99%

Imidazolium-based ionic liquids as dispersants to improve the stability of asphaltene in Egyptian heavy crude oil

Ghanem,

Nessim,

Khalil

et al. 2023

Sci Rep

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“…Furthermore, the band at 3140 cm À1 was assigned to the C-H stretching vibration on the imidazolium ring skeleton. 27 Another new peak observed at 1084 cm À1 was ascribed to the B-F stretching vibration. Therefore, the FTIR analysis further confirmed the successful preparation of PVDF-g-IL.…”

Section: The Preparation Of Pvdf-g-il Powders and Aemsmentioning

confidence: 99%

Radiation synthesis of imidazolium ionic liquid grafted PVDF as the anion exchange membrane for vanadium redox flow batteries

et al. 2023

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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%

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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Four novel imidazolium-derived ionic liquids: Synthesis and anti-corrosion characteristics

Cited by 16 publications

References 48 publications

Imidazolium-based ionic liquids as dispersants to improve the stability of asphaltene in Egyptian heavy crude oil

Imidazolium-based ionic liquids as dispersants to improve the stability of asphaltene in Egyptian heavy crude oil

Radiation synthesis of imidazolium ionic liquid grafted PVDF as the anion exchange membrane for vanadium redox flow batteries

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

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