Intra-/inter-molecular synergistic inhibition effect of sulfonate surfactant and 2-benzothiazolethiol on carbon steel corrosion in 3.5% NaCl solution

被引:50
作者
Zhu, Hailin [1 ]
Li, Xiaofen [1 ]
Lu, Xiaomeng [1 ]
Chen, Xiaojie [1 ]
Li, Jun [1 ]
Han, Xinghua [1 ]
Ma, Xuemei [1 ]
Hu, Zhiyong [1 ]
机构
[1] North Univ China, Sch Chem Engn & Technol, Taiyuan 030051, Peoples R China
基金
中国国家自然科学基金;
关键词
Intra-/inter-molecular synergism; Carbon steel; NaCl solution; Electrochemical techniques; Theoretical studies; MILD-STEEL; GEMINI SURFACTANT; IONIC LIQUIDS; ACID; PERFORMANCE; COPPER; DERIVATIVES; MECHANISM; TWEEN-80; BEHAVIOR;
D O I
10.1016/j.corsci.2021.109291
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A sulfonate surfactant (CHT) was synthesized, reacted with 2-benzothiazolethiol (MBT) to obtain CHMT to investigate the intramolecular synergistic inhibition effect of CHT and MBT. Meanwhile, a mixture of CHT and MBT in a 1:1 mol ratio (CHT + MBT) was used to investigate the intermolecular synergistic inhibition effect of CHT and MBT. The results from electrochemical experiment and theoretical studies indicated that CHMT and CHT + MBT strongly inhibited the corrosion of carbon steel in 3.5 % NaCl solution compared to MBT or CHT, revealing intramolecular and intermolecular synergistic action between CHT and MBT. Additionally, the mechanisms of intramolecular and intermolecular synergistic effects were proposed.
引用
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页数:13
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