Ionic liquids with two typical hydrophobic anions as acidic corrosion inhibitors

Guo, Yangyang; Chen, Zhihao; Zuo, Yuwei; Chen, Yun; Yang, Wenzhong; Xu, Bin

doi:10.1016/j.molliq.2018.08.090

Cited by 60 publications

(19 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This positive OCP shift indicates that [m‐2HEA][Ol] has the ability to inhibit the acid corrosion of steel. [ 61,62 ]…”

Section: Resultsmentioning

confidence: 99%

“…The water contact angle for steel after 1-hr immersion in corrosion solutions: OCP shift indicates that [m-2HEA][Ol] has the ability to inhibit the acid corrosion of steel. [61,62] It is well accepted that the inhibition mechanism of organic corrosion inhibitors is adsorption. These types of inhibitors can affect the CR in two ways [60,63] : (a) by geometric blocking of the reaction sites (geometric blocking effect), decreasing the available reaction area, and (b) by modifying the activation energy of the cathodic and/or anodic reactions, compared with the noninhibited corrosion process.…”

Section: Contact Angle Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

N‐methyl‐2‐hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium

Schmitzhaus

Ortega-Vega

Schroeder

et al. 2020

Materials & Corrosion

View full text Add to dashboard Cite

The aim of the present study is to evaluate the performance of N-methyl-2hydroxyethylammonium oleate ([m-2HEA][Ol]) as a corrosion inhibitor for mild steel in a 0.1-mol/L hydrochloric acid solution and also investigate the role of chloride in the inhibition mechanism. This protic ionic liquid (PIL) has formerly shown a high efficiency as a corrosion inhibitor in a neutral chloride medium. Electrochemical and weight loss measurements, surface contact angle determination, scanning electron microscopy, and Raman spectroscopy were used to understand the factors that influence the response of the studied inhibitor. Results revealed that [m-2HEA][Ol] behaves as a mixed-type adsorption inhibitor, by blocking cathodic sites and by modifying the activation energy of the anodic reaction, and it can reach up to 94-97% of inhibition efficiency. PIL adsorption was enhanced by the excess of positive charge of the mild steel. The effect of inhibitor molecule has been discussed to propose a mechanism that explains the inhibitory action of the corrosion inhibitor, pointing out the role of chloride in the inhibition mechanism.

show abstract

“…This positive OCP shift indicates that [m‐2HEA][Ol] has the ability to inhibit the acid corrosion of steel. [ 61,62 ]…”

Section: Resultsmentioning

confidence: 99%

Section: Contact Angle Measurementsmentioning

confidence: 99%

N‐methyl‐2‐hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium

Schmitzhaus

Ortega-Vega

Schroeder

et al. 2020

Materials & Corrosion

View full text Add to dashboard Cite

show abstract

“…İmidazolyum ve türevi yapılar metallerin korozyon olayına karşı korunmasında yaygın olarak çalışılmaktadırlar [7][8][9][10]. Yapıda bulunan iki tane N atomu, molekülün metal yüzeyine adsorpsiyonu için büyük önem taşımaktadır.…”

Section: öNceki̇ çAlişmalarunclassified

“…Yapıda bulunan iki tane N atomu, molekülün metal yüzeyine adsorpsiyonu için büyük önem taşımaktadır. Guo ve arkadaşları [7]…”

Section: öNceki̇ çAlişmalarunclassified

The Influence of 1-Benzyl-3-Methylimidazolium Hexafluorophosphate on Corrosion of C1010 Steel in Acidic Medium

Sığırcık

2019

Çukurova Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

View full text Add to dashboard Cite

Bu çalışmada, C1010 çeliğin 1 M HCl çözeltisindeki korozyonuna 1-benzil-3-metilimidazolyum hekzaflorofosfat'ın inhibisyon etkinliği çalışılmıştır. Elektrokimyasal impedans spektroskopi (EIS) ve potansiyodinamik polarizasyon teknikleri kullanılmıştır. Potansiyodinamik polarizasyon sonuçları, anodik ve katodik akım yoğunluklarının inhibitör derişiminin artması ile azaldığını göstermiştir. EIS ölçümlerinden ise artan sıcaklıklarda dahi inhibisyon etkinliklerinin halen yüksek olduğu belirlenmiştir. İnhibitörün metal üzerindeki adsorpsiyon davranışı, Langmiur adsorpsiyon izotermine uymaktadır. Elde edilen tüm sonuçlar, kullanılan inhibitörün C1010 çeliğin asidik ortamdaki korozyonu üzerine %83,5 inhibisyon etkinliğine sahip olduğu göstermektedir.

show abstract

“…Chaouiki et al [12] studied the synthetic organic compounds, i.e., 4-(isopentylamino)-3-nitrobenzonitrile and 3-amino-4-(isopentylamino)benzonitrile for corrosion inhibition of mild steel in a 1.0 M HCl solution and reported that 4-(isopentylamino)-3-nitrobenzonitrile resulted in improvements to inhibition efficiency. Other synthetic organics, such as 1-hydroxyethyl-3-methylimidazolium hexafluorophosphate and 1-hydroxyethyl-3-methylimidazolium bis-(trifluoromethylsulfonyl)imide [13], clopidogrel [14], p-vinyl benzene sulfonate and vinyl sulfonate-functionalized polyvinyl alcohol [15], 4-mercaptopyridine-modified sodium dodecyl sulfate [16], 1H-perimidine and 1H-perimidin-2-amine [17], tetrazole derivatives [18], 4-((2,3dichlorobenzylidene)amino)-3-methyl-1H-1,2,4-triazole-5(4H)-thione [19], 5-aminopyrazole carbonitriles [20], 2-(1-piperidyl)ethyl 3-methyl-4-oxo-2-phenylchromene-8-carboxylate [21], and 1-(2-ami-noethyl)-1-dodecyl-2-(trifluoromethyl)-4,5-dihydro-1H-imidazol-1-ium chloride [22] have been investigated as corrosion inhibitors for the protection of mild steel in HCl, H 2 SO 4 , and phosphoric acid solution at room temperature. e results confirmed that the compounds reported an inhibition efficiency in the range of 57.1-81.4% [15], 97.0-98.6% [16], 34.6-92.3% [17], 71.1-94.2% [19], 56.8-95.5% [20], 91.2-97.9% [21], and 80.6-99.2% [22].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibition Mechanism of Mild Steel by Amylose-Acetate/Carboxymethyl Chitosan Composites in Acidic Media

Erna

Herdini

Futra

2019

International Journal of Chemical Engineering

View full text Add to dashboard Cite

This article details an investigation on the mechanism of corrosion inhibition of mild steel using amylose-acetate-blended carboxymethyl chitosan (AA-CMCh) in acidic media in the context of kinetic and thermodynamic parameters. The surface of mild steel was exposed to test solutions and evaluated using scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The activation energy (Ea), free energy of adsorption (ΔG), enthalpy of activation (ΔHads), and entropy of activation (ΔSads) were determined in order to elucidate the mechanism of corrosion inhibition. The results confirmed that AA could be improved using CMCh as a corrosion inhibitor. The corrosion rate decreased from 1109.00 to 229.70 mdd (79.29%), while corrosion inhibition increased from 35.13 to 89.72%. Sulfate acid (H2SO4) of 0.25 M also helped in decreasing the corrosion rate from 2664.4 to 1041.67 mdd (60.9%) while also in increasing corrosion inhibition from 56.94 to 68.31%. The calculated values for ΔG, ΔHads, and ΔSads were −33.22 kJ·mol−1, −48.56 kJ·mol−1, and 0.0495 kJ·mol−1·K−1, respectively. The mechanism of corrosion inhibition of mild steel in the acidic condition is dominated and precipitated by the formation of the Fe-chelate compound, which was confirmed by the SEM/EDS spectrum. The reactions were spontaneous, exothermic, and irregular and takes place on the surface of mild steel.

show abstract

Ionic liquids with two typical hydrophobic anions as acidic corrosion inhibitors

Cited by 60 publications

References 49 publications

N‐methyl‐2‐hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium

N‐methyl‐2‐hydroxyethylammonium oleate ionic liquid performance as corrosion inhibitor for mild steel in hydrochloric acid medium

The Influence of 1-Benzyl-3-Methylimidazolium Hexafluorophosphate on Corrosion of C1010 Steel in Acidic Medium

Corrosion Inhibition Mechanism of Mild Steel by Amylose-Acetate/Carboxymethyl Chitosan Composites in Acidic Media

Contact Info

Product

Resources

About