Corrosion inhibition properties of two imidazolium ionic liquids with hydrophilic tetrafluoroborate and hydrophobic hexafluorophosphate anions in acid medium

被引：73

作者：

Guo, Yangyang ^{[1
]}

Xu, Bin ^{[2
]}

Liu, Ying ^{[1
]}

Yang, Wenzhong ^{[1
]}

Yin, Xiaoshuang ^{[1
]}

Chen, Yun ^{[1
]}

Le, Jinxun ^{[1
]}

Chen, Zhihao ^{[1
]}

机构：

[1] Nanjing Tech Univ, Coll Chem & Mol Engn, Nanjing 210009, Jiangsu, Peoples R China

[2] Minist Environm Protect, Nanjing Inst Environm Sci, Nanjing 210042, Jiangsu, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 56卷

基金：

中国国家自然科学基金;

关键词：

Ionic liquid; Corrosion inhibition; Acid solution; Polarization; EIS; 1.0 M HCL; MILD-STEEL; CARBON-STEEL; HYDROCHLORIC-ACID; ADSORPTION BEHAVIOR; AQUEOUS-SOLUTIONS; SULFURIC-ACID; THEORETICAL EVALUATION; CATIONIC SURFACTANTS; AGGREGATION BEHAVIOR;

D O I：

10.1016/j.jiec.2017.07.016

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ionic liquids, 1-viny1-3-aminopropylimidazolium hexafluorophosphate ([VAIM][PF6]) and 1-vinyl-3-aminopropylimidazolium tetrafluoroborate ([VAIM][BF4]) acted as the corrosion inhibitors. Weight loss measurements showed the corrosion inhibition efficiencies of [VAIM][PF6] and [VAIM][BF4] were 90.53% and 54.01% at 45 degrees C, respectively. The ILs were mix-type inhibitors. Raising the temperature can have a decreased inhibition efficiency of [VAIM][BF4], while [VAIM][PF6] presented an opposite trend. In addition, [VAIM][PF6] obeyed Langmuir monolayer adsorption isotherm, while [VAIM][BF4] obeyed El-Awady kinetic-thermodynamic adsorption for blocking active sites. Moreover, Molecular Dynamic Simulations showed that [VAIM][PF6] owned a higher adsorption energy, which may be responsible for the more adsorption groups of [VAIM][PF6]. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：234 / 247

页数：14

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