Experimental and Quantum Chemical Studies on the Corrosion Inhibition Performance of Benzimidazole Derivatives for Mild Steel in HCl

Yadav, Mahendra; Behera, Debasis; Kumar, Sumit; Sinha, Rajesh Ranjan

doi:10.1021/ie400099q

Cited by 225 publications

(91 citation statements)

References 53 publications

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“…This means that it is difficult to detach the species from the surface of the metal electrode easily and become a part of it. Thus, the molecular surface area values were calculated and the largest value calculated for the surface area is (397.559Å 2 ) for the cefixima inhibitor (Table 5), the difference in the geometry-optimized structures of the inhibitors enhances the effectiveness of coverage degree of the working electrode surface and leads to an increase in protection efficiency 102,103 as depicted in Fig.10a,b. It is clear the large value of the molecular surface area and the high negative binding energy for the cefixima inhibitor confirms that it displays the highest efficiency percentage of efficiency of corrosion inhibition.…”

Section: Fig (10) : Homo and Lumo Images For The Cefixima And Aminobementioning

confidence: 99%

A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

2017

Irq. Nat. J. Chem.

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The corrosion inhibition effects of cefixima and aminobenzylpenicillin drug inhibitors in 0.05M deaerated sulfuric acid solution for carbon steel have been studied by using electrochemical techniques and quantum chemical calculations as well as scanning electron microscope (SEM). It is observed from the experimental findings that both compounds perform as good inhibitors and behave according to mixed type inhibitor in terms of their inhibitory action. Additionally, it was found the percentage of corrosion inhibition become maximal when the concentrations of the cefixima and aminobenzylpenicillin inhibitors are increased. The influence of temperature on the corrosion of carbon steel has been investigated and the activation energy values estimated. The corrosion efficiency decreases with increasing the temperature range. The parameters of thermodynamic have been determined and indicate that the adsorption mechanism follows the Langmuir isotherm model and forms a protective layer on carbon steel surface electrode, which was characterized by scanning electron microscope measurements, to prevent a corrosion process. Quantum chemical calculations have been performed to provide evidence for corrosion inhibition according to the chemical structures of the cefixima and aminobenzylpenicillin drug inhibitors.

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Section: Fig (10) : Homo and Lumo Images For The Cefixima And Aminobementioning

confidence: 99%

A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

2017

Irq. Nat. J. Chem.

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“…Dissolution of mild steel takes place under acidic condition due to desalting, acidifying and pickling [2]. They cause corrosion and steel can be protected in different forms like surface treatment, coatings, sealants, and by adding inhibitors.…”

Section: Introductionmentioning

confidence: 99%

Innovative Method for Reduction of Mild Steel Corrosion in Water by Activated Carbon from Ocimum Tenuiflorum

Zulfareen¹,

Kannan²,

Venugopal³

2015

ChChT

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Abstract. The activated carbon prepared from the bark of Ocimum Tenuiflorum reduces the amount of dissolved oxygen (DO) present in distilled water, which in turn reduces the rate of corrosion. The effects of DO, temperature and pH on the rate of mild steel corrosion were discussed. The inhibition efficiency of corrosion on mild steel was estimated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The inhibition efficiency increases with increase in temperature, pH and the mass of activated carbon. The adsorption of activated carbon follows Langmuir adsorption isotherm. The surface morphology of activated carbon was analysed by FT-IR and SEM.

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“…Carbon steel is a major construction material and is widely used for downhole tubular, casings, flow lines and transmission pipelines in petroleum industry [1,2]. It is also used as a structural component in ships manufacture.…”

Section: Introductionmentioning

confidence: 99%

“…It is also used as a structural component in ships manufacture. Acidic solutions are extensively used as aggressive solutions in acid processes of pickling, cleaning, descaling, and oil well acidization [1][2][3]. During descaling processes that remove rust and mill scale formed during production, steel and other alloys are immersed in acidic solutions.…”

Section: Introductionmentioning

confidence: 99%

“…During descaling processes that remove rust and mill scale formed during production, steel and other alloys are immersed in acidic solutions. Due to the aggressiveness of acids, steel corrodes severely during these processes particularly with the use of hydrochloric acid, which results in terrible waste of both resources and money [1,2]. The damage due to corrosion can be decreased using of corrosion inhibitors.…”

Section: Introductionmentioning

confidence: 99%

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The effect of feldspar and kaolin on mechanical performance of SBR/LDPE composites

Mousa

2013

International Journal of Industrial Chemistry

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The current study was designed to give more knowledge and helping to exploit the leaves of the plants L. stoechas collected in Tlemcen region in the west of Algeria by determining the anti-corrosive activity of its essential oil. The inhibitory efficiency of the essential oil of the plant obtained by hydrodistillation and characterized by GC and GC/MS was studied using gravimetric and electrochemical methods (polarization curves and electrochemical impedance). The effect of temperature on the corrosion behavior of the steel and the inhibitory efficiency was studied in a temperature range of 303-323 K at 2 g/L. The surface morphology of the samples immersed in 1 M HCl for 24 h, before and after adding inhibitor at (2 g/L at 30 °C) was analyzed by scanning electron microscope (SEM) Quanta 250 with tungsten filament from the company FEI. Results show that the addition of the essential oil of the plant to the medium induces a diminish in the rate of corrosion and augmentation in the inhibitory efficiency of the oil. We established that the inhibition efficiency increase with concentration of the essential oil of lavender to attain 76.19% at 2 g/L. Polarization curves revealed that lavender oil react as a mixed-type inhibitor. EIS spectra exhibit one capacitive loop and confirm the inhibitive ability, and the changes in impedance parameters were indicative of adsorption of essential oil of lavender on the metal surface. The thermodynamic parameters indicate that the adsorption of the molecules of the oil takes place according to the Langmuir isotherm in the corrosive medium studied and that they are physisorbed on the metal surface. The analysis of the surface by electron microscopy demonstrates the absence of surface attack patterns in the presence of the oil. The results obtained from different tested techniques were in good agreement.

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Experimental and Quantum Chemical Studies on the Corrosion Inhibition Performance of Benzimidazole Derivatives for Mild Steel in HCl

Cited by 225 publications

References 53 publications

A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

A Study into the Corrosion Inhibition of Carbon Steel in Acidic Medium Using Eco-Friendly Compounds

Innovative Method for Reduction of Mild Steel Corrosion in Water by Activated Carbon from Ocimum Tenuiflorum

The effect of feldspar and kaolin on mechanical performance of SBR/LDPE composites

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