Inhibition of mild steel corrosion by Rabeprazole sulfide

被引：92

作者：

Pavithra, M. K. ^{[1
]}

Venkatesha, T. V. ^{[1
]}

Kumar, M. K. Punith ^{[1
]}

Tondan, H. C. ^{[2
]}

机构：

[1] Kuvempu Univ, Sch Chem Sci, Dept Chem, Shankaraghatta 577451, Karnataka, India

[2] Sri Venkateswara Coll, Dept Chem, New Delhi 110021, India

来源：

CORROSION SCIENCE | 2012年 / 60卷

关键词：

Acid solution; Mild steel; Weight loss; Polarization; SEM; Acid corrosion; SULFURIC-ACID-SOLUTION; QUANTUM-CHEMICAL CALCULATION; IODIDE-IONS; H2SO4; DERIVATIVES; ADSORPTION; MEDIA; IRON;

D O I：

10.1016/j.corsci.2012.04.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The inhibition effect of Rabeprazole sulfide (2-[[4-(3-methoxypropoxy)-3-methylpyridine-2-yl]-methylthio]-1H-benzimidazole) (RS) on the corrosion behavior of mild steel in 0.5 M H2SO4 solution was studied by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. Polarization measurements indicate that RS act as a mixed type inhibitor. The adsorption of RS on the mild steel surface follow Langmuir adsorption isotherm model and zero order kinetics. The thermodynamic parameters governing the adsorption process were determined and discussed. Also, quantum chemical parameters were calculated to provide further insight into the mechanism of inhibition action of RS. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：104 / 111

页数：8

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