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利用一些带衍生物来控制在酸性环境中的温钢腐蚀:电化学和理论方法

Eid E Salama¹, Saad Alrashdi¹, Ahmed T A Boraei²

¹Department of Chemistry, College of Science, Jouf University, Sakaka 72341, Aljouf, Saudi Arabia.

Molecules (Basel, Switzerland)

|March 27, 2025

概括

两种合成的醇衍生物,乙3-甲基-1H-醇-2-碳酸盐 (FIC) 和2-4-甲基) -2,4-二二醇[3,4-b]醇-3- (MPI),通过形成保护性表面屏障,有效地抑制酸性溶液中的温和钢铁腐蚀.

科学领域:

材料科学材料科学材料科学
电化学电化学电化学
腐蚀科学腐蚀科学

背景情况:

在酸性环境中,温和钢的腐蚀给工业带来了重大挑战.
印度衍生物正在被探索,因为它们具有作为腐蚀抑制剂的潜力.
了解抑制机制对于开发有效的保护策略至关重要.

研究的目的:

合成和表征两个新型的醇衍生物:乙烯3-甲基-1H-醇-2-碳酸盐 (FIC) 和2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 乙醇-3- (MPI) 和乙醇3-甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基甲基
为了研究FIC和MPI在0.5M H2SO4酸性介质中对温钢的腐蚀抑制效率.
用电化学和计算方法阐明吸附机制和腐蚀抑制行为.

主要方法:

使用分析和光谱技术,合成和阐明英衍生物 (FIC和MPI) 的结构.
使用开放电路潜力 (OCP),电化学阻抗光谱学 (EIS) 和潜在动力极化 (PDP) 的电化学评价腐蚀抑制.
使用密度函数理论 (DFT) 和分子动力学 (MD) 模拟的计算分析.

主要成果:

FIC和MPI都表现出在硫酸中对温钢的显著腐蚀抑制.
阻断效率随着道衍生物的摩尔度增加而增加,达到FIC的76.2%,MPI的81.2%在90ppm时.
印衍生物在温钢表面的吸附形成了保护性屏障,PDP研究表明它们作为混合类型的抑制剂.

结论:

乙烯3-甲基-1H-英多尔-2-碳酸盐 (FIC) 和2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - MPI是酸性介质中的温钢的有效腐蚀抑制剂.
抑制机制涉及对温钢表面的吸附,形成对腐蚀性物种的屏障.
计算模拟支持实验结果,提供了对控制腐蚀抑制的分子相互作用的见解.

关键词:

在 DFT 方面,它是最重要的.酸性腐蚀是一种酸性腐蚀.醇化合物是一种醇化合物.抑制效率的抑制效率是什么温和钢是一种温和的钢.

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