Inhibiting Effects of Rabeprazole Sulfide on the Corrosion of Mild Steel in Acidic Chloride Solution

Pavithra, M. K.; Venkatesha, T. V.; Kumar, Mohan

doi:10.1155/2013/714372

Cited by 11 publications

(12 citation statements)

References 44 publications

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“…It was also discovered that the values of E ads increases with increase in the concentration of the inhibitor. The values of E ads and those of ∆H ads varies in a similar manner, and the average values of E ads − ∆H ads equal to 2.41 kJmol −1 , which is very close to the value of RT (2.51 kJmol −1 ) indicating that the adsorption process is unimolecular in nature [21].…”

Section: ) Thermodynamic Considerationssupporting

confidence: 67%

Inhibiting Effect of Dioctyl Phthalate on the Corrosion of Mild Steel in 1.0 M Hydrochloric Acid Solution

Emmanuel¹,

Nwufo²,

Ekwenchi³

2018

OALib

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Steel corrosion is a major and costly problem to industrialists and construction workers. The inhibiting effect of dioctyl phthalate on the corrosion of mild steel was carried out in 1.0 M solution of HCl as the corrosion medium using the weight loss method. The adsorption of the dioctyl phthalate on the surface of the mild steel in 1.0 M HCl was found to follow the physisorption mechanism and also follow the first order rate law. The corrosion rate was found to be directly proportional to the temperature of the medium, and inversely proportional to the concentration of the inhibitor in solution. The activation energy increases with increase in the concentration of the inhibitor. Values of standard free energy change, o ads G ∆ are consistently below −20 kJmol −1. This solidly established that the adsorption mechanism of the dioctyl phthalate on mild steel surface is physisorption. Langmuir and Freundlich adsorption isotherms were used, with Freundlich isotherm as best fit for the modelling of the adsorption process. The value n F in Freundlich isotherm which, indicates the intensity of adsorption, was found to be in the average of 0.717 not far from the typical value of 0.6 n F .

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Section: ) Thermodynamic Considerationssupporting

confidence: 67%

Inhibiting Effect of Dioctyl Phthalate on the Corrosion of Mild Steel in 1.0 M Hydrochloric Acid Solution

Emmanuel¹,

Nwufo²,

Ekwenchi³

2018

OALib

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“…The correlation between dipole moment (µ) and inhibition efficiency of compounds is variously interpreted by several authors (Rajesh et al, 2018;Pavithra et al, 2013;Soltani et al, 2015). In fact some authors suggest that an increase in the dipole moment leads to a decrease in the inhibition efficiency.…”

Section: Figure 2 δE Evolution Per Inhibitormentioning

confidence: 99%

A Density Functional Theory Study to Analyze the Inhibition Potential of Some Antidepressant Molecules on Metal Corrosion in Acidic Media

Tigori¹,

Mamadou²,

Allou³

et al. 2023

IJC

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The use of therapeutic molecules in corrosion inhibition field contributes to environment preservation. In this context that this current work applies quantum chemical method to study the interaction between some metals and four compounds with antidepression effect. Which compounds are clomipramine, imipramine, amoxapine and iproniazide. The inhibition properties of these compounds in acidic media were evaluated by density functional theory (DFT) with B3LYP functional in 6-31G(d,p) basis set. It was proved that these compounds have a strong electron donating and accepting capacity. This capacity is influenced by their substituents. The low energy gap (DE) values obtained denote that these molecules are highly reactive and can form coordination bonds for the establishment of a barrier on metal surface that could reduce corrosion process. Reactivity sites prediction were carried out by Fukui functions   ( fk+,  fk-  ) and dual descriptor (∆fkr) ,it appears that the centers of nucleophilic attacks are in general nitrogen (N) atoms whereas the centers of electrophilic attacks are only carbon atoms (C).

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“…Furthermore, as most of the chemical compounds that prevent corrosion of metals and alloys are toxic, and thus pose a threat both to human health and environment, their usage is limited [9]. For this reason, several authors have reported the use of natural products, and drugs as green corrosion inhibitors for various metals and alloys viz: Ketoconazole [10], Tenofovir Disoproxil furmarate [11], Rabeprazole [12], Torsemide and Furosemide [13], Metol [14], Ciprofloxacin [15], Anthranilic acid [16],…”

Section: Introductionmentioning

confidence: 99%

Corrosion Inhibitory Studies of Novel Schiff Bases Derived from Hydralazine Hydrochloride on Mild Steel in Acidic Media

Njong¹,

Ndosiri²,

Nfor³

et al. 2018

OJPC

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The inhibition performance of 1-hydralazinophthalazine (HPZ) (1), and syn-thesized1-(2-[(5-methylfuran-2-yl)methylene)] hydrazono) phthalazine (MFHPZ) (2), 1-(phthalazin-1(2H)-one) [(pyridin-2-yl) ethylidene] hydrazone (ACPHPZ) (3) and (2-acetylthiophene hydrazono) phthalazine (ACTHPZ) (4) has been investigated for mild steel in 1 M HCl. Compound 4 shows maximum inhibition efficiency of 93% at 5.0 × 10 −3 M concentration. The evaluation of thermodynamics and activation parameters indicated spontaneous adsorption of the inhibitor molecules which takes place through chemisorption. The adsorption of 3 and 2 follows Langmuir adsorption isotherm and Temkin adsorption isotherm for 4 and 1. The inhibitor efficiency was of the order 4 > 3 > 1 > 2. Impedance study for the representative inhibitor compounds 4 and 3 showed that decrease in charge transfer resistance is responsible for effective protection of mild steel surface by the tested inhibitor.

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Inhibiting Effects of Rabeprazole Sulfide on the Corrosion of Mild Steel in Acidic Chloride Solution

Cited by 11 publications

References 44 publications

Inhibiting Effect of Dioctyl Phthalate on the Corrosion of Mild Steel in 1.0 M Hydrochloric Acid Solution

Inhibiting Effect of Dioctyl Phthalate on the Corrosion of Mild Steel in 1.0 M Hydrochloric Acid Solution

A Density Functional Theory Study to Analyze the Inhibition Potential of Some Antidepressant Molecules on Metal Corrosion in Acidic Media

Corrosion Inhibitory Studies of Novel Schiff Bases Derived from Hydralazine Hydrochloride on Mild Steel in Acidic Media

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