A study on the inhibition of N80 steel in 3.5% NaCl solution saturated with CO2 by fruit extract of Gingko biloba

Singh, Ambrish; Lin, Yuanhua; Liu, Wanying; Deng, Kailai; Pan, Jie; Huang, Bo; Ren, Cheng; Zeng, Dezhi

doi:10.1016/j.jtice.2014.02.001

Cited by 52 publications

(23 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is widely reported that organic inhibitors adsorb on substrate surface to protect against corrosion 43,44 . This adsorption process is a quasi-replacement of adsorbed H 2 O molecules (nH 2 O (ads) ) by inhibitor molecules in aqueous solution (Inh (sol) ) 43,46 :…”

Section: Resultsmentioning

confidence: 99%

Eco-friendly 2-Thiobarbituric acid as a corrosion inhibitor for API 5L X60 steel in simulated sweet oilfield environment: Electrochemical and surface analysis studies

Usman

Gasem

Umoren

et al. 2019

Sci Rep

View full text Add to dashboard Cite

The corrosion inhibition efficiency of 2-Thiobarbituric acid (TBA) for metal substrate (API X60 steel) in 3.5% NaCl solution saturated with CO2 gas was probed using various techniques namely, LPR (linear polarization resistance), EIS (electrochemical impedance spectroscopy), and PDP (potentiodynamic polarization). The effects of TBA concentration (25–100 ppm), solution pH (4 and 6), temperature (25–80 °C), and immersion time (2–72 h) on the inhibition efficiency were examined. SEM (scanning electron microscopy) and XPS (X–ray photoelectron spectroscopy) were deployed to explore the corrosion retardation mechanism. TBA exhibited protection efficiencies exceeding 90% for all experimental conditions considered. The excellent anticorrosion performance by TBA was retained up to 72 hours of immersion time. PDP results exhibited that TBA behaved as a mixed type inhibitor. Results from kinetics and thermodynamics analyses indicate that TBA chemically adsorbed on the steel surface following Langmuir isotherm model. The composition of the adsorbed TBA film has been analyzed by XPS.

show abstract

Section: Resultsmentioning

confidence: 99%

Eco-friendly 2-Thiobarbituric acid as a corrosion inhibitor for API 5L X60 steel in simulated sweet oilfield environment: Electrochemical and surface analysis studies

Usman

Gasem

Umoren

et al. 2019

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Impedance spectra for J55 and N80 steel in 3.5% NaCl solution saturated with CO 2 in the absence and presence of different concentrations of PM are shown in Fig. 3a–d in the form of Nyquist plots and Bode phase angle plots 31 . The Nyquist plots consist of depressed semicircles with one capacitive loop in the high frequency (HF) zone and one inductive loop in the lower frequency (LF) zone.…”

Section: Resultsmentioning

confidence: 99%

An impending inhibitor useful for the oil and gas production industry: Weight loss, electrochemical, surface and quantum chemical calculation

Singh

Ansari

et al. 2017

Sci Rep

Self Cite

View full text Add to dashboard Cite

The influence of a Schiff base namely N,N′-(pyridine-2,6-diyl)bis(1-(4-methoxyphenyl) methanimine) (PM) on the corrosion of J55 and N80 steel in 3.5 wt.% NaCl solution saturated with CO2 was evaluated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), X-ray diffraction (XRD), contact angle, scanning electron microscopy (SEM), atomic force microscopy (AFM) and scanning electrochemical microscopy (SECM). Potentiodynamic polarization results suggested that the inhibitor acted as a mixed type inhibitor by reducing both anodic and cathodic reactions. The adsorption of PM on the J55 and N80 steel surface obeyed the Langmuir adsorption isotherm. XRD, contact angle, SEM, AFM and SECM studies revealed that the surface of the metal was quite unaffected after the addition of inhibitor. Quantum chemical calculations and molecular dynamic simulation support the experimental results well.

show abstract

“…As the tip approaches the surface of the N80 steel in the porphyrin containing aggressive solutions, the diffusion field surrounding the tip is hindered and the tip current decreases (Figure 7). This behaviour is typical of an insulating surface and confirmed that the steel surface is covered with protective film in the presence of the inhibitors [38]. In the absence of the porphyrin inhibitors, the tip current increases as the tip was made to approach the surface indicating that the N80 steel surface in the blank 3.5% NaCl solution is conductive and prone to a faster corrosion process.…”

Section: Resultsmentioning

confidence: 55%

“…Prior to each SECM experiment, the distance between the tip and the sample was established by approach curve measurement performed above the insulating part of the sample at −0.70 V. The status of corroded sample was studied by monitoring the probe (tip potential: 0.5 V vs. Ag/AgCl, saturated KCl) and the substrate (tip potential: −0.7 V) in test solutions. Similar approach has been successfully applied and reported elsewhere [38].…”

Section: Resultsmentioning

confidence: 98%

Porphyrins as Corrosion Inhibitors for N80 Steel in 3.5% NaCl Solution: Electrochemical, Quantum Chemical, QSAR and Monte Carlo Simulations Studies

et al. 2015

Self Cite

View full text Add to dashboard Cite

Abstract:The inhibition of the corrosion of N80 steel in 3.5 wt. % NaCl solution saturated with CO2 by four porphyrins, namely 5,10,15,20-tetrakis(4-hydroxyphenyl)-21H,23H-porphyrin OPEN ACCESSMolecules 2015, 20 15123 (HPTB), 5,10,15,4,4′,4″,10,15,tetrakis(benzoic acid) (THP) and 5,10,15,20-tetraphenyl-21H,23H-porphyrin (TPP) was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, scanning electrochemical microscopy (SECM) and scanning electron microscopy (SEM) techniques. The results showed that the inhibition efficiency, η% increases with increasing concentration of the inhibitors. The EIS results revealed that the N80 steel surface with adsorbed porphyrins exhibited non-ideal capacitive behaviour with reduced charge transfer activity. Potentiodynamic polarization measurements indicated that the studied porphyrins acted as mixed type inhibitors. The SECM results confirmed the adsorption of the porphyrins on N80 steel thereby forming a relatively insulated surface. The SEM also confirmed the formation of protective films of the porphyrins on N80 steel surface thereby protecting the surface from direct acid attack. Quantum chemical calculations, quantitative structure activity relationship (QSAR) were also carried out on the studied porphyrins and the results showed that the corrosion inhibition performances of the porphyrins could be related to their EHOMO, ELUMO, ω, and μ values. Monte Carlo simulation studies showed that THP has the highest adsorption energy, while T4PP has the least adsorption energy in agreement with the values of σ from quantum chemical calculations.

show abstract

A study on the inhibition of N80 steel in 3.5% NaCl solution saturated with CO2 by fruit extract of Gingko biloba

Cited by 52 publications

References 36 publications

Eco-friendly 2-Thiobarbituric acid as a corrosion inhibitor for API 5L X60 steel in simulated sweet oilfield environment: Electrochemical and surface analysis studies

Eco-friendly 2-Thiobarbituric acid as a corrosion inhibitor for API 5L X60 steel in simulated sweet oilfield environment: Electrochemical and surface analysis studies

An impending inhibitor useful for the oil and gas production industry: Weight loss, electrochemical, surface and quantum chemical calculation

Porphyrins as Corrosion Inhibitors for N80 Steel in 3.5% NaCl Solution: Electrochemical, Quantum Chemical, QSAR and Monte Carlo Simulations Studies

Contact Info

Product

Resources

About