Oil-in-water emulsion of a heterocyclic adduct as a novel inhibitor of API X52 steel corrosion in acidic solution

AbstractIn this study, an addition reaction occurred between epoxidized soybean oil and 4-(dimethylamino)benzenethiol to produce a thiol adduct (TA). The produced TA had been emulsified using a nonionic emulsifier blend (Tween 20, Span 20, and Span 80) to be a water-miscible emulsified thiol adduct (ETA). The ETA emulsion was investigated as a corrosion inhibitor for API X52 carbon steel in 1 m HCl using weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) techniques. The surface morphologies of the carbon steel were characterized by scanning electron microscopy and energy dispersive X-ray. The effect of temperature was investigated. It was found that the emulsified adduct behaves as an excellent corrosion inhibitor with high inhibition efficiency of 94.7% with 0.005 m concentration. The polarization data indicate that the emulsified adduct acted as a mixed-type inhibitor. The adsorption of the emulsified adduct on the carbon steel surface has been found to follow the Langmuir isotherm.

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Corrosion Characteristics of Carbon Steel upon Exposure to Biodiesel Synthesized from Used Frying Oil

REAKTOR ◽

10.14710/reaktor.17.4.177-184 ◽

2017 ◽

Vol 17 (4) ◽

pp. 177

Author(s):

Adhi Setiawan ◽

Nora Amelia Novitrie ◽

Agung Nugroho ◽

W Widiyastuti

Keyword(s):

Carbon Steel ◽

Corrosion Rate ◽

Contact Time ◽

Steel Surface ◽

Steel Corrosion ◽

Frying Oil ◽

Effect Of Temperature ◽

Used Frying Oil ◽

Carbon Steel Surface ◽

Rate Maximum

The use of biodiesel leads to corrosion of automotive material, which can potentially shorten engine lifetime. The study aims to investigate the effect of temperature and contact time on the corrosion characteristics of carbon steel upon exposure to biodiesel synthesized from used frying oil. The corrosion rate of carbon steel was analyzed based on weight loss measurement according to the standard of ASTM G31 as affected by temperature and contact time. The immersion temperatures used in this study were 30oC, 40oC, and 70o, respectively. The contact times studied were 30 days, 40 days, and 50 days respectively. The results show that the increase of temperature and contact time of biodiesel on carbon steel surface speeds up the corrosion rate. Maximum corrosion rate (0.083 mmy) was observed on the carbon steel contacted to biodiesel at 70oC for 50 days. The SEM results showed an irregular shape of the corroded carbon steel surface. XRD / FTIR analysis of carbon steel samples show the presence of peaks, detected as Fe2O3, FeO(OH) and Fe2O2CO3, as the corrosion products. Keywords: biodiesel; carbon steel; corrosion; FAME; used frying oil

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Some Thiophene Derivatives as Corrosion Inhibitors for Carbon Steel in Hydrochloric Acid

Journal of Metallurgy ◽

10.1155/2014/472040 ◽

2014 ◽

Vol 2014 ◽

pp. 1-15 ◽

Cited By ~ 7

Author(s):

A. S. Fouda ◽

A. A. Attia ◽

A. A. Negm

Keyword(s):

Weight Loss ◽

Carbon Steel ◽

Potentiodynamic Polarization ◽

Steel Surface ◽

Electrochemical Impedance ◽

Electrochemical Techniques ◽

Effect Of Temperature ◽

Carbon Steel Surface ◽

Weight Loss Method ◽

Thiophene Derivatives

Corrosion inhibitive performance of some thiophene derivatives during the acidic corrosion of carbon steel surface in 1 M HCl was investigated by chemical technique (weight loss) and electrochemical techniques (potentiodynamic polarization, electrochemical frequency modulation, and electrochemical impedance spectroscopy). The effect of temperature on the corrosion rate was investigated by the weight loss method, and some thermodynamic parameters for corrosion and adsorption processes were determined and discussed. The results show that the inhibition efficiency increased with the increase in inhibitor concentration and temperature. The adsorption of thiophene derivatives on the carbon steel surface obeys Langmuir adsorption isotherm. The obtained results indicated that the investigated compounds are chemically adsorbed on the steel surface. Potentiodynamic polarization studies showed that these compounds are mixed-type inhibitors and the results obtained from the techniques are in good agreement.

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Corrosion Inhibition of Carbon Steel in 0.5 M H2SO4 by Phtalocyanine Blue

ISRN Corrosion ◽

10.1155/2014/945645 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

J. C. Valle-Quitana ◽

G. F. Dominguez-Patiño ◽

J. G. Gonzalez-Rodriguez

Keyword(s):

Sulfuric Acid ◽

Carbon Steel ◽

Corrosion Inhibitor ◽

Electrochemical Impedance ◽

Steel Corrosion ◽

Corrosion Process ◽

Blue Dye ◽

Protective Film ◽

Film Properties ◽

Adsorption Desorption

Phthalocyanine blue dye has been investigated as a carbon steel corrosion inhibitor in 0.5 M sulfuric acid by using polarization curves, electrochemical impedance spectroscopy, and gravimetric tests. Dye concentrations included 0, 100, 200, 400, 600, 800, and 1000 ppm, whereas testing temperatures were 25, 40, and 60°C. Results indicated that phtalocyanine blue is a good corrosion inhibitor with its efficiency increasing with the concentration up to 40°C, but it increases at 60°C. Inhibitor improves the passive film properties and it forms an adherent, compact, protective film, acting, therefore, as an anodic-type inhibitor. At 25 and 40°C the corrosion process was under charge transfer, whereas at 60°C the adsorption/desorption of some species from the metal surface controlled the corrosion process.

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A Study of N,N-Diethylammonium O,O′-Di(p-methoxyphenyl)dithiophosphate as New Corrosion Inhibitor for Carbon Steel in Hydrochloric Acid Solution

International Journal of Corrosion ◽

10.1155/2016/1907634 ◽

2016 ◽

Vol 2016 ◽

pp. 1-8 ◽

Cited By ~ 3

Author(s):

Chuan Lai ◽

Bin Xie ◽

Changlu Liu ◽

Wan Gou ◽

Lvshan Zhou ◽

...

Keyword(s):

Carbon Steel ◽

Hydrochloric Acid ◽

Corrosion Inhibitor ◽

Storage Time ◽

Inhibition Efficiency ◽

Electrochemical Impedance ◽

Hydrochloric Acid Concentration ◽

Carbon Steel Surface ◽

And Storage ◽

Mixed Type Inhibitor

N,N-Diethylammonium O,O′-di(p-methoxyphenyl)dithiophosphate (EAPP) as a new corrosion inhibitor was synthesized in the present work. The corrosion inhibition of EAPP in hydrochloric acid for carbon steel was evaluated by potentiodynamic polarization measurements, electrochemical impedance spectroscopy, weight loss measurements, and scanning electron microscopy. The results indicate that the EAPP is mixed type inhibitor, and the adsorption of EAPP on carbon steel surface obeys Langmuir isotherm. In addition, the inhibition efficiency increases with increasing the concentration of inhibitor and decreases with increasing the hydrochloric acid concentration, temperature, and storage time.

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New Cyanoacetamide Derivatives as Corrosion Inhibitors for Carbon Steel in Acidic Media

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v4i1.962 ◽

2008 ◽

Vol 4 (1) ◽

pp. 323-350 ◽

Cited By ~ 3

Author(s):

Abdel Aziz Fouda ◽

A. M. El-desoky ◽

M. M. Muhtar

Keyword(s):

Carbon Steel ◽

Benzoic Acid ◽

Adsorption Mechanism ◽

Electrochemical Impedance ◽

Physical Adsorption ◽

Effect Of Temperature ◽

Active Centers ◽

Carbon Steel Surface ◽

Freundlich Adsorption Isotherm ◽

Inhibitive Action

The corrosion behavior of carbon steel in 1 M HCl solution in the absence and presence of 4-(2-Cyano-7- hydroxy-4-methylene-hepta-2,5-dienoylamino)-benzoic acid (a), 4-[2-Cyano-3-(4-methoxy -phenyl)-acryloylamino]-benzoicacid.(b), 4-(2-Cyano-3-phenyl acryloylamino)-benzoic acid (c) ,4-[3-(4-Chloro-phenyl)-2-cyano-acryloylamino]-benzoic acid(d), was investigated using weight loss , potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The inhibitive action of the investigated compounds was discussed in terms of blocking the electrode surface by adsorption of the molecules through the active centers contained in their structures. The adsorption of these derivatives on carbon steel surface is consistent with Freundlich adsorption isotherm. The effect of temperature on the rate of corrosion in the absence and presence of these compounds were also studied. Physical adsorption mechanism is proposed from the calculated thermodynamic parameters for all investigated compounds.

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Synthesis of ZnO-NPs Using a Convolvulus arvensis Leaf Extract and Proving Its Efficiency as an Inhibitor of Carbon Steel Corrosion

Materials ◽

10.3390/ma13040890 ◽

2020 ◽

Vol 13 (4) ◽

pp. 890

Author(s):

Ghadah M. Al-Senani

Keyword(s):

Carbon Steel ◽

Steel Surface ◽

Electrochemical Impedance ◽

Steel Corrosion ◽

Protective Film ◽

Convolvulus Arvensis ◽

Zno Nps ◽

Transfer Resistance ◽

Carbon Steel Surface ◽

Vis Spectroscopy

This paper studies the use of zinc oxide nanoparticles (ZnO-NPs) synthesized using an extract of Convolvulus arvensis leaf and expired ZnCl2, as efficient inhibitors of carbon steel corrosion in a 1 M HCl solution. The synthesized ZnO-NPs were characterized by Fourier-transform infrared (FTIR) and UV-Vis spectroscopy analysis. The corrosion inhibition of carbon steel in 1 M HCl was also investigated through potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and the determination of weight loss. The results show that the efficiency of the prevention increased when the concentration of ZnO-NPs was increased to 91%, and that the inhibition efficiency was still high (more than 89%) despite decreasing at high temperatures, acting as a mixed-type inhibitor. A sample of carbon steel with a protective layer of inhibitor on top was observed during immersion in 1 M HCl for 20 h; an increase in the charge transfer resistance (Rct) and stability of the inhibitor could be observed after 6 h. Adsorption isotherm models demonstrated that the inhibitor adsorption mechanism on the carbon steel surface followed Langmuir rather than Freundlich and Temkin behaviors. The thermodynamic parameters showed that the adsorption process is one of mixed, spontaneous, and exothermic adsorption. The results illustrate that the ZnO-NPs were a strong inhibitor of carbon steel corrosion in acid medium. The results of scanning electron microscopy (SEM) images showed that the ZnO-NPs formed a good protective film on the carbon steel surface.

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Gravimetric, electrochemical and surface study on the good’s buffer ionic liquid as corrosion inhibitor for carbon steel in acidic medium

JOURNAL OF MECHANICAL ENGINEERING AND SCIENCES ◽

10.15282/jmes.13.1.2019.07.0377 ◽

2019 ◽

Vol 13 (1) ◽

pp. 4434-4448

Author(s):

R. Nanthini ◽

M. I. Mutalib

Keyword(s):

Carbon Steel ◽

Corrosion Inhibitor ◽

Potentiodynamic Polarization ◽

Steel Surface ◽

Electrochemical Impedance ◽

Scanning Electron Micrographs ◽

Inhibitor Molecule ◽

Gravimetric Measurements ◽

Carbon Steel Surface ◽

Inhibition Performance

This corrosion study assessed the inhibition performance of carbon steel in 1 M of hydrochloric acid (HCl) using Good’s buffer ionic liquids (GBIL) namely 1-Butyl-3-methylimidazolium 2-(N-Morpholino) propane, [BMIM][MOPS] using electrochemical impedance, potentiodynamic polarization, and weight loss (gravimetric) measurements. GBIL are synthesized by the combination of Good's buffer as anion and various organic bases as the cation. The gravimetric measurements exhibit higher reduction in weight for carbon steel exposed to the acidic environment in the absence of corrosion inhibitor (CI) as compared to carbon steel immersed in the presence of inhibitor molecule. Potentiodynamic polarization study indicates that the synthesized inhibitor acted as a mixed type inhibitor. The inhibition efficiency increases with increase in the concentration of [BMIM][MOPS]. Corrosion protection efficiency ranging from 88% to 90% was featured at 800 ppm of CI in the HCl medium. The adsorption of [BMIM][MOPS] on the carbon steel surface was described by the Langmuir's adsorption isotherm. The scanning electron micrographs inspected the morphology of the carbon steel surface exposed to the solution without and with the presence of inhibitor. The result showed that compound effectively suppressed corrosion by the appearance of an improved surface structure of carbon steel with increasing concentration of [BMIM][MOPS].

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Corrosion Behavior of API-X120 Carbon Steel Alloy in a GTL F-T Process Water Environment at Low COD Concentration

Metals ◽

10.3390/met10060707 ◽

2020 ◽

Vol 10 (6) ◽

pp. 707

Author(s):

Dina Ewis ◽

Ahmed Gomaa Talkhan ◽

Abdelbaki Benamor ◽

Hazim Qiblawey ◽

Mustafa Nasser ◽

...

Keyword(s):

Carbon Steel ◽

Corrosion Rate ◽

Immersion Time ◽

Rotation Speed ◽

Electrochemical Impedance ◽

Water Environment ◽

Protective Layer ◽

Steel Corrosion ◽

Process Water ◽

Effect Of Temperature

The effect of temperature, time and rotation speed of FT-GTL process water on the corrosion rate of API X-120 carbon steel was investigated. Electrochemical impedance spectroscopy and potentiodynamic polarization techniques were used to determine the carbon steel corrosion rate under temperatures ranging from 293 to 323 K and rotation speed of 0, 500, 1000, 2000 rpm when the immersion time was 0.5, 1, and 2 h. The corrosion rate increased with temperature and rotation speed but decreased with immersion time. SEM, XRD, and XPS analyses of the corroded surfaces confirmed the formation of iron oxide and ferric oxide as the main components of the protective layer.

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Synthesis of ZnO-NPs Using Convolvulus Leaf Extract and Proving Its Efficiency as an Inhibitor for Carbon Steel Corrosion in 1M HCl

10.20944/preprints202001.0118.v1 ◽

2020 ◽

Author(s):

Ghadah Al-Senani

Keyword(s):

Carbon Steel ◽

Steel Surface ◽

Electrochemical Impedance ◽

Steel Corrosion ◽

Isotherm Models ◽

Protective Film ◽

Zno Nps ◽

Strong Inhibitor ◽

Transfer Resistance ◽

Carbon Steel Surface

This paper studies the use of zinc oxide nanoparticles (ZnO-NPs) synthesized using an extract of convolvulus leaves and expired ZnCl2, as an efficient inhibitor for carbon steel corrosion in 1M HCl solution. ZnO-NPs are characterized by Fourier-transform infrared spectrophotometer (FTIR) and UV–Vis analysis. The technique of weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) has also been used to investigate the prevention of carbon steel corrosion in 1M HCl. The results showed that the efficiency of restraint increased when the concentration of ZnO-NPs was raised to 91% and that the inhibition efficiency is still high despite its decrease at high temperature, and it acts as a mixed-type inhibitor A sample of carbon steel with the protective inhibitor layer on top was immersed for 20 hours and observed; an increase in the charge transfer resistance (Rct) and stability of the inhibitor was noticed after 6 hours. Adsorption isotherm models demonstrated that the inhibitor adsorption mechanism on the carbon steel surface followed Langmuir, more than Freundlich and Temkin, behavior. The thermodynamic parameters showed that the adsorption process is a mixed adsorption, spontaneous, and exothermic. The results illustrated that the acid medium was a strong inhibitor of carbon steel corrosion. Scanning electron microscope (SEM) showed that the ZnO-NPs formed a good protective film on the carbon steel surface.

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Experimental, DFT and MD Assessments of Bark Extract of Tamarix aphylla as Corrosion Inhibitor for Carbon Steel Used in Desalination Plants

Molecules ◽

10.3390/molecules26123679 ◽

2021 ◽

Vol 26 (12) ◽

pp. 3679

Author(s):

Ismat H. Ali

Keyword(s):

Corrosion Inhibitor ◽

Potentiodynamic Polarization ◽

Inhibition Efficiency ◽

Electrochemical Impedance ◽

Effect Of Temperature ◽

Bark Extract ◽

Plant Sample ◽

Gravimetric Analysis ◽

Sample Collection ◽

Eis Measurements

This study aimed to examine the extract of barks of Tamarix aphylla as a corrosion inhibitor. The methodology briefly includes plant sample collection, extraction of the corrosion inhibitor, gravimetric analysis, plotting potentiodynamic polarization plots, electrochemical impedance spectroscopic measurements, optimization of conditions, and preparation of the inhibitor products. The results show that the values of inhibition efficiency (IE%) increased as the concentrations of the inhibitor increased, with a maximum achievable inhibition efficiency of 85.0%. Potentiodynamic polarization (PP) tests revealed that the extract acts as a dual-type inhibitor. The results obtained from electrochemical impedance spectroscopy (EIS) measurements indicate an increase in polarisation resistance, confirming the inhibitive capacity of the tested inhibitor. The adsorption of the inhibitor on the steel surface follows the Langmuir adsorption isotherm model and involves competitive physio-sorption and chemisorption mechanisms. The EIS technique was utilized to investigate the effect of temperature on corrosion inhibition within the 298–328 K temperature range. Results confirm that the inhibition efficiency (IE%) of the inhibitor decreased slightly as the temperature increased. Lastly, the thermodynamic parameters for the inhibitor were calculated.

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