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
收藏
页码：234 / 247
页数：14
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