新型咪唑啉衍生物和 2- 氨基吡啶作为 Q235 缓蚀剂的协同效应：实验和理论研究

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-28 DOI:10.1002/sia.7286

Pengjie Wang, Lin Fan, Yuhao Song, Kuaihai Deng, Lei Guo, Zhonghui Li, Yuanhua Lin

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引用次数: 0

摘要

为了减少缓蚀剂的投资，在实验和理论研究的基础上，对新型咪唑啉衍生物（SMIS）和2-氨基吡啶（AMP）的缓蚀作用和机理进行了细致的研究。0.7-g/L SMIS 和 0.3-g/L AMP 的缓蚀效果最好，失重、电化学阻抗谱和电位极化（Tafel）的缓蚀效率分别为 90.54%、98.56% 和 97.68%。电化学研究表明，SMIS& 属于阴极缓蚀剂。SMIS& 主要增加了 1-M HCl 中的膜电阻和电荷转移电阻，从而起到一定的缓蚀作用。X 射线光电子能谱和能量色散谱仪证明，SMIS&可吸附在 Q235 表面，分子动力学研究表明，SMIS 和 AMP 之间存在一定的协同作用。该研究证实了SMIS与AMP具有良好的协同效应，提高了缓蚀效率，降低了SMIS的合成成本，对协同缓蚀具有一定的指导意义。

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Synergistic effect of new imidazoline derivative and 2-aminopyridine as corrosion inhibitors for Q235: Experimental and theoretical study

In order to reduce the investment of corrosion inhibitors, based on experimental and theoretical studies, the corrosion inhibition and mechanism of new imidazoline derivatives (SMIS) and 2-aminopyridine (AMP) were investigated carefully. The best corrosion inhibition effect was at 0.7-g/L SMIS and 0.3-g/L AMP, the corrosion inhibition efficiency of weight loss, electrochemical impedance spectroscopy, and potentiodynamic polarization (Tafel) were 90.54%, 98.56% and 97.68%, respectively. Electrochemical research shows that SMIS& belongs to cathodic corrosion inhibition. SMIS& mainly increased the film resistance and charge transfer resistance in 1-M HCl, thus playing a certain role in corrosion inhibition. X-ray photoelectron spectroscopy and energy dispersive spectrometer proved that SMIS& can be adsorbed on the surface of Q235, molecular dynamics showed that there was a certain synergy between SMIS and AMP. This study confirmed that SMIS and AMP have a good synergistic effect, improve the corrosion inhibition efficiency, reduce the synthesis cost of SMIS, and have a certain guiding significance for synergistic corrosion inhibition.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.