Egyptian licorice extract as a green corrosion inhibitor for copper in hydrochloric acid solution

Deyab, M.A.

doi:10.1016/j.jiec.2014.07.036

Cited by 145 publications

(44 citation statements)

References 30 publications

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“…9 illustrates the Arrhenius lines in the presence and Absence of the inhibitor. The calculated values of activation energy increase from 21.82 Kj /mol to 52.43 Kj /mol in the presence of the inhibitor, which means that the corrosion inhibition of aluminum in Na2CO3 is carried out by physical adsorption [24][25][26][27] .…”

Section: Determination Of Activation Energymentioning

confidence: 90%

“…Table 4 shows the temperature effect on the electrochemical parameters taken from the polarization curves with and without addition of 1600 ppm of Ricinus communis oil. The results of Table 4 show that as the temperature increases the intensity of current increases with and without addition of 1600 ppm of inhibitor and consequently the inhibition efficiency decreases, this is explained by the physical adsorption of Ricinus communis oil molecules on the surface of aluminum 24 . From the inspection of Table 5, the values of the transfer resistance as well as the inhibition efficiency decreased with increasing temperature.…”

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 97%

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Inhibition of aluminum corrosion in 0.1 M Na2CO3 by Ricinus communis oil

Hamdou¹,

Essahli²,

Lamiri³

2017

Mediterr.J.Chem.,

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The study was carried out using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) technique. The inhibition efficiency was found around 87 % with 1600 ppm of inhibitor. The efficiency was accentuated with the increase of the concentration while it decreased with the rise of the temperature. Analysis of the polarization curves revealed that the Ricinus communis oil is considered as a mixed inhibitor. The Influence of the temperature was also studied, the values of the activation energy showed that the inhibition occurred by physisorption.

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Section: Determination Of Activation Energymentioning

confidence: 90%

Section: Electrochemical Impedance Spectroscopymentioning

confidence: 97%

Inhibition of aluminum corrosion in 0.1 M Na2CO3 by Ricinus communis oil

Hamdou¹,

Essahli²,

Lamiri³

2017

Mediterr.J.Chem.,

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“…Large numbers of organic extracts of plant materials have been used to prevent a variety of metals such as mild steel [17][18][19][20][21][22][23][24][25][26][27][28], various types of steel [29,30], cast iron [31] aluminum and its alloys [32][33][34], zinc and its alloys [35][36][37][38], copper [39][40][41], nickel [42,43] and tin [44,45].…”

Section: Organic Green Inhibitorsmentioning

confidence: 99%

Green Methods for Corrosion Control

Emran¹,

Ali²,

lehaibi³

2018

Corrosion Inhibitors, Principles and Recent Applications

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Corrosion of metals is a serious environmental problem. Most of the corrosion inhibitors are synthetic chemicals that are hazardous to environments and expensive. Today, there has been an increasing search for green corrosion inhibitors, due to the toxicity of some inhibitors. Green corrosion inhibitors are biodegradable and free of heavy metals or other toxic compounds. There is an intensive effort underway to develop new plant origin corrosion inhibitors for metal subjected to various environmental conditions. Salts of rare earth elements can be also used as inorganic alternative nontoxic corrosion inhibitors. Sol-gel coatings can be recommended as green protective films for metal corrosion. The origin of sol-gel process, its advantages and limitations, and the type of coating method are presented in this chapter, as well as a brief summary of recent literature concerning the use of hybrid inorganic-organic sol-gel and nanostructured sol-gel protective coatings for metal corrosion in different media.

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“…between inhibitor molecules and metal surface [38]. The absolute values of G o ads is less than 20 kJ/mol indicating that the corrosion inhibition takes action due to the electrostatic interactions between the charged molecules and the charged metal (physical adsorption) [39].…”

Section: Application Of Adsorption Isothermmentioning

confidence: 99%