Experimental and theoretical studies of four allyl imidazolium-based ionic liquids as green inhibitors for copper corrosion in sulfuric acid

被引：515

作者：

Qiang, Yujie ^{[1
,2
]}

Zhang, Shengtao ^{[1
,4
]}

Guo, Lei ^{[3
]}

Zheng, Xingwen ^{[4
]}

Xiang, Bin ^{[1
]}

Chen, Shijin ^{[5
]}

机构：

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

[2] Sichuan Univ Sci & Engn, Sch Chem Engn, Zigong 643000, Peoples R China

[3] Tongren Univ, Sch Mat & Chem Engn, Tongren 554300, Peoples R China

[4] Mat Corros & Protect Key Lab Sichuan Prov, Zigong 643000, Peoples R China

[5] Bomin Elect Ltd, Meizhou 514021, Peoples R China

来源：

CORROSION SCIENCE | 2017年 / 119卷

基金：

中国国家自然科学基金;

关键词：

Corrosion inhibitor; Copper; Sulfuric acid; EIS; Quantum chemical calculation; Molecular dynamics simulation; 3 TRIAZOLE DERIVATIVES; MILD-STEEL; HCL SOLUTION; SYNTHETIC SEAWATER; NACL SOLUTION; CARBON-STEEL; MEDIA; ADSORPTION; BEHAVIOR; PERFORMANCE;

D O I：

10.1016/j.corsci.2017.02.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, four allyl imidazolium-based ionic liquids (ILs) with various length of alkyl chains were developed for the corrosion inhibition of copper in 0.5 M sulfuric acid. Electrochemical techniques, morphological characterization, theoretical caculations were combined to investigate the inhibition performance and mechanism. The results show that corrosion circumstance of copper in sulfuric aqueous solution is efficiently inhibited by these ILs. Their favorable performance is ascribed to formation of ILsadsorption films, which follow the Langmuir adsorption isotherm. Besides, the inhibition efficiencies of the investigated inhibitors increase with the augment of alkyl chain length attached to the imidazolium ring. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：68 / 78

页数：11

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