Synthesis of alkynyl alcohol derivatives and its corrosion inhibition on N80 steel in 5 M HCl

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-13 DOI:10.1002/apj.3048

Sheng Tu, Pengxi Li, Lunhong Ai, Qi Tang

引用次数: 0

Abstract

Alkynyl alcohol derivatives (N-14) were synthesized by 2-chloromethyl pyridine, propargyl alcohol and bromotetradecane and the structure was confirmed by ¹H NMR, ¹³C NMR, MS and FTIR. The corrosion inhibition performance was evaluated by weight loss, Tafel polarization, EIS measurements and DFT quantum calculations. The results proved that N-14 effectively inhibited the acid corrosion of N80 steel. The corrosion inhibition of N-14 increased with its concentration and decreased with increasing temperature. A maximum of 99.56% inhibition efficiency was achieved using 5 × 10⁻⁵ mol/l of N-14 at 60°C. Thermodynamic parameters showed that the adsorption of N-14 on N80 steel is spontaneous and exothermic, conforming to Langmuir's adsorption. Electrochemical results showed that N-14 behaved as a mixed-type inhibitor. In addition, corrosion products produced on N80 steel surface were researched by SEM, XRD, UV and contact angle. At the same time, the corrosion inhibition mechanism was discussed.

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炔醇衍生物的合成及其在 5 M HCl 中对 N80 钢的缓蚀作用

通过 2-氯甲基吡啶、丙炔醇和溴代十四烷合成了炔醇衍生物（N-14），并通过 1H NMR、13C NMR、MS 和 FTIR 确认了其结构。通过失重、Tafel 极化、EIS 测量和 DFT 量子计算评估了其缓蚀性能。结果证明，N-14 能有效抑制 N80 钢的酸腐蚀。N-14 的缓蚀效果随其浓度的增加而增加，随温度的升高而降低。在 60°C 条件下，使用 5 × 10-5 mol/l 的 N-14 时，缓蚀效率最高可达 99.56%。热力学参数表明，N-14 在 N80 钢上的吸附是自发的、放热的，符合 Langmuir 吸附理论。电化学结果表明，N-14 是一种混合型抑制剂。此外，还通过 SEM、XRD、UV 和接触角研究了 N80 钢表面产生的腐蚀产物。同时，还探讨了其缓蚀机理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.