Experimental and theoretical studies of benzalkonium chloride as an inhibitor for carbon steel corrosion in sulfuric acid

被引：86

作者：

Guo, Lei ^{[1
]}

Zhu, Shanhong ^{[2
]}

Zhang, Shengtao ^{[1
]}

机构：

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

[2] Xinxiang Univ, Sch Comp & Informat Engn, Xinxiang 453003, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 24卷

基金：

中国国家自然科学基金;

关键词：

Electrochemical test; Weight loss test; Corrosion inhibitor; Quantum chemical calculation; Molecular dynamics simulation; IMIDAZOLINE AMMONIUM METHYLSULFATE; MILD-STEEL; SURFACTANTS; DERIVATIVES; ADSORPTION; EFFICIENCY; THIOUREA; ION;

D O I：

10.1016/j.jiec.2014.09.026

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effect of benzalkonium chloride (BKC) on the corrosion of carbon steel in H2SO4 media has been examined by electrochemical impedance spectroscopy (EIS), polarization, weight loss, and scantling electron microscopy (SEM) methods. The results showed that the corrosion inhibition efficiency of BKC was excellent. Potentiodynamic polarization study showed that the BKC was a mixed-type inhibitor. DFT calculations were used to gain insight into the structural and electronic properties in relation to the inhibition efficiency. Molecular dynamics (MD) simulations demonstrate that chloride ion plays a significant role in the inhibition mechanism. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：174 / 180

页数：7

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