Investigation of indole-3-carboxylic acid as steel inhibitor in 0.1 M H2SO4 solution

被引：16

作者：

Tan, Jianhong ^{[1
]}

Guo, Lei ^{[2
]}

Xu, Shenying ^{[3
]}

机构：

[1] Yangtze Normal Univ, Sch Chem & Chem Engn, Chongqing 408100, Peoples R China

[2] Chongqing Univ, Sch Chem & Chem Engn, Chongqing 400044, Peoples R China

[3] Yibin Univ, Sch Chem & Chem Engn, Yinbin 644000, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 25卷

关键词：

EIS; Polarization; Corrosion inhibition; Mild steel; Adsorption; Theoretical calculations; MILD-STEEL; CORROSION-INHIBITOR; SULFURIC-ACID; COPPER CORROSION; CARBON-STEEL; IRON; BEHAVIOR; HALIDES; METALS; ISATIN;

D O I：

10.1016/j.jiec.2014.11.007

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Corrosion inhibition of indole-3-carboxylic acid (ICA) on mild steel in 0.1 M H2SO4 solution has been studied through weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscope (SEM) experiments. Plots from polarization and EIS techniques show ICA acts as a mixed type inhibitor and its high inhibition effectiveness is assumed to occur via the adsorption of the inhibitor molecules on steel surface. It is then found that this adsorption behavior obeys the Langmuir adsorption isotherm. Theoretical techniques incorporating molecular mechanics and molecular dynamics were used to simulate the adsorption of ICA molecule on Fe(1 1 0) surface. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：295 / 303

页数：9

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